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Updated: 10 hours 23 min ago

MFJ-1835H Cobweb Antenna Review ( High Power version 1.5kW)

11 hours 32 min ago

For restricted spaces, 5-Bands: 20/17/15/12/10 Meters . . .

Restricted space spoiling your operating fun? MFJ Cobweb puts your call back on the map!

This five-band (20, 17, 15, 12, 10 Meters) half-wave Cobweb Antenna is perfect for restricted space or portable operation. Sky-gray fiberglass spreaders and nearly invisible wire elements (flat 9x9x1/2 feet square. 8 pounds), blend in with your surroundings while standing tough against nasty weather. 

Horizontally polarized for less local noise pickup plus solid gain over verticals will allow you to work DX easily — even on QRP. Radiation pattern is nearly omni-directional so you don’t need a rotator. No radials needed! Low SWR is due to MFJ’s exclusive Spider-MatchTM broadband network. Use lightweight TV hardware to mount it on your chimney, balcony, fence post or other. SO-239.

Low in cost, but big on performance. Let MFJ’s Cobweb Antenna turn your space problem into a fresh stack of QSL cards from far away places. $ 249.95  amzn_assoc_placement = "adunit0"; amzn_assoc_enable_interest_ads = "true"; amzn_assoc_tracking_id = "qn0c-20"; amzn_assoc_ad_mode = "auto"; amzn_assoc_ad_type = "smart"; amzn_assoc_marketplace = "amazon"; amzn_assoc_region = "US"; amzn_assoc_linkid = "4969cf2edaec6bf602678d298f572f59"; News ARISS SSTV Commemorative Activity June 21, 2017 in: News No comments

All, In commemoration of our 20th anniversary, the ARISS team is planning to transmit a set of 12 SSTV images that capture the accomplishments of ARISS over that time.  While still to be scheduled, we anticipate the SSTV operation to occur... Read more

App - Mobile CommCat 4 for Radio Control and Logging! June 12, 2017 in: App - Mobile No comments

CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with most popular radios and accessories. It requires a Windows XP or later computer. CommCat... Read more

Equipment Heathkit ® Precision RF Meter – HM-1002 – pre-order June 20, 2017 No comments

Finally, affordable laboratory-grade accuracy. And a whole lot more.   For about fifty years, SWR/power meters haven’t really changed at all. Un... Read more

POWER GENIUS XL PREORDERS ARE AVAILABLE June 12, 2017 No comments

POWER GENIUS XL PREORDERS ARE AVAILABLE THIS IS A RESERVATION ONLY – REMAINING BALANCE WILL BE DUE PRIOR TO DELIVERY Amplifier Price: $6999 Reservatio... Read more

Audio Amplied Speaker Microphone designed for the Elecraft KX 2 and KX3 transceivers June 06, 2017 No comments

Elecraft radios have acheived excellence in quality and design for the fast growing market of QRP Portable Operators. The AlexMic is a Audio Amplied S... Read more

ColibriNANO Direct Sampling HF/6M receiver [ User Manual ] June 04, 2017 No comments

  Read more

Palstar LA-1K – 1 kw LDMS Solid state amplifier May 28, 2017 No comments

LA-1K   1 kw LDMS Solid state amplifier – coming soon! RF Sensing 1000 Watt Amplifier covering 160m to 6m bands with LCD touch-screen display to... Read more

KP-1 Power Meter – KOHJINSHA – 5KW May 22, 2017 No comments

KP-1 is a SWR and Power meter employing current transformer covereing the frequency range of 1.8MHz through 30MHz. ■ A large scale analogue cross mete... Read more

ICOM IC-7610 – Pre-release Brochure May 19, 2017 No comments

ICOM IC-7610 The SDR Everyone Wants! Receivers Independent direct sampling receivers capable of receiving two bands/two modes simultaneously. DIGI-SEL... Read more

Flex Radio announces The Flex 6400 and 6600 series SDR Radios – Courtesy of Waters & Stanton May 19, 2017 No comments

Waters & Stanton, the SDR Transceiver pioneer supplier in the UK announced today the launch of the new Flex 6400 and 6600 series radios which will... Read more

“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast.

12 hours 32 min ago


“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast. Listen…and learn!

Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like!

Every 2 weeks, your host, QST Editor-in-Chief Steve Ford, WB8IMY, and the Doctor himself, Joel Hallas, W1ZR, will discuss a broad range of technical topics. You can also e-mail your questions to doctor@arrl.org, and the Doctor may answer them in a future podcast.

Enjoy “ARRL The Doctor is In” on Apple iTunes, or by using your iPhone or iPad podcast app (just search for “ARRL The Doctor is In”). You can also listen online at Blubrry, or at Stitcher (free registration required, or browse the site as a guest) and through the free Stitcher app for iOS, Kindle, or Android devices. If you’ve never listened to a podcast before, download our beginner’s guide.

(adsbygoogle = window.adsbygoogle || []).push({}); Equipment Remote Shack by MFJ RBC-212 November 19, 2014 No comments

Remote Shack RBC-212 is a remote base controller equipped with two link input ports. One radio control port and two multi-function ports each on the A... Read more

Quick Charge Soldering Iron Kit – Boxed (#7700) January 10, 2016 No comments

Quick Charge Soldering Iron Kit – Boxed (#7700) 7700 Series Soldering Irons Our best seller! The Quick Charge is world’s number one rechargeable... Read more

LP-100A Digital Vector Wattmeter by N8LP May 26, 2015 No comments

LP-100A Digital Vector Wattmeter Everything you need for critical station monitoring, tuning and protection on one screen. No other meter has dual bar... Read more

SKY-221 SDR HF 160 -10m Transceiver May 01, 2016 No comments

SKY-221 SDR HF 160 -10m Transceiver With Built-in ADC / DAC For SSB/CW/DIGI/AM/FM 10 Watts     SKY-221/V21 / is designed based on SKY-209 with built i... Read more

Japanese HF KL-1 Kohjinsha PA – 5 KW May 13, 2017 No comments

The KL-1 consists of a sophisticated and sturdy Main Unit and a Desk Top Controller with five meters (HV, IP, IG, FWD, and REF). The LCD displays BAND... Read more

Digital Modes Quicker-Turnaround Digital Modes in Experimental Stage for WSJT-X Suite June 16, 2017 No comments

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From Data Modems to Sound Cards: AD #46 February 04, 2017 No comments

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Video Demonstrates Digital Voice Plus Video “Teleconferencing” Scheme for HF August 16, 2016 No comments

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JT65 ‐HF Operator’s Guide August 20, 2015 No comments

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RTTY Contest Champ Don Hill, AA5AU, Achieves Remote Contesting Milestone August 30, 2016 No comments

Champion RTTY contester Don Hill, AA5AU, of Louisiana may be the first US radio amateur to operate SO2R (single operator, two radio) remotely in an RT... Read more

VHF Compare All BaoFeng Radios April 13, 2015 No comments

Compare All BaoFeng Radios   Web Based Comparison Chart See More:         Read more

Baofeng UV-3R+ (Camo) November 23, 2015 No comments

Description: UV-3R+ series two-way radios are the updated styles based on UV-3R by BAO FENG, it has multi-functions, such as dual band, dual display,... Read more

The Ten Cent Modification You Can Do to Double Your Radio’s Range July 21, 2015 No comments

by David Spero Some things in life you can never have too much of.  But for this article, we’ll concentrate just on radio range/efficiency! There are... Read more

INTRODUCTION OF THE AnyTone DMR DIGITAL/ANALOG VHF AND UHF RADIO March 02, 2017 No comments

PRESS RELEASE Qixiang Electron Science & Technology Co., Ltd was founded in January 1993, and is locate in Quanzhou in China. Qixiang is a high-te... Read more

IP Radio – Icom IP100H November 09, 2015 No comments

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Software Computer Logging Specifically for ARRL Field Day June 21, 2017 No comments

ARRL Field Day is upon us! If you’re still in the dark about how to use the logging software that your club or group will employ this weekend, these v... Read more

Release of SDRconsole v3, called Preview 6 June 17, 2017 No comments

Preview 6, June 16th 2017 What’s New A lot of new features, for example: Airspy server Recording sceduler Signal history Receiver pane Schedule... Read more

Waters & Stanton announce a ‘significant release’ of PowerSDR software June 03, 2017 No comments

Waters & Stanton of Portsmouth Hampshire, announce the immediate release of PowerSDR mRX 3.4.1.  There are a lot of exciting new features, some ma... Read more

MMTTY Ver. 1.7Kb (beta) is now available for download May 21, 2017 No comments

Revision history Ver1.68A -> Ver1.70K (K6TU, G3WYW, JA7UDE, AA6YQ) *********************************************************************** –... Read more

Fldigi v4.0.4 now available May 15, 2017 No comments

The hard-working development team led by W1HKJ have announced the release of Fldigi v4.0.4. This version of Fldigi is a maintenance release with a cou... Read more

ARISS SSTV Commemorative Activity

Wed, 06/21/2017 - 16:30

All,
In commemoration of our 20th anniversary, the ARISS team is planning to transmit a set of 12 SSTV images that capture the accomplishments of ARISS over that time.  While still to be scheduled, we anticipate the SSTV
operation to occur around the weekend of July 15.  We are planning for at least a 2 day operation, but are working for a potential longer operation. Note that all of this tentative and may change based on crew scheduling and
ISS operations.

Starting with our first meeting in November 1996, our joint operations on Mir, becoming the first operational payload on ISS in November 2000 to our 1103rd school contact (so far), ARISS’ accomplishments have been tremendous. We have touched the lives of many and inspired and educated countless students to pursue science, technology, engineering and math careers.

Please stay tuned as more details on our SSTV event will be communicated in the coming weeks.  Please spread the word.  And think about how you can get students in your area involved in capturing these images.  We would love to hear your stories on how that goes.

73,  Frank KA3HDO

——————————————–
Frank H. Bauer, KA3HDO
ISS Ham Radio Program Manager & PI
ARISS International Chair
AMSAT V.P. for Human Spaceflight Programs

 

Special Slow Scan Television (SSTV) transmissions are expected to be made from the International Space Station on 145.800 MHz FM around the weekend of July 15.

In commemoration of their 20th anniversary, the ARISS team is planning to transmit a set of 12 SSTV images that capture the accomplishments of ARISS over that time.

The ARISS SSTV Blog says:

While still to be scheduled, we anticipate the SSTV operation to occur around the weekend of July 15.  We are planning for at least a 2 day operation, but are working for a potential longer operation. Note that all of this tentative and may change based on crew scheduling and
ISS operations.

Starting with our first meeting in November 1996, our joint operations on Mir, becoming the first operational payload on ISS in November 2000 to our 1103rd school contact (so far), ARISS’ accomplishments have been tremendous. We have touched the lives of many and inspired and educated countless students to pursue science, technology, engineering and math careers.

Please stay tuned as more details on our SSTV event will be communicated in the coming weeks.  Please spread the word.  And think about how you can get students in your area involved in capturing these images.  We would love to hear your stories on how that goes.

73,  Frank KA3HDO

ARISS SSTV Blog http://ariss-sstv.blogspot.co.uk/2017/06/ariss-sstv-commemorative-activity.html

How to receive ISS SSTV https://amsat-uk.org/beginners/iss-sstv/

Source:AMSAT

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For restricted spaces, 5-Bands: 20/17/15/12/10 Meters . . . Restricted space spoiling your operating fun? MFJ Cobweb puts your call back on the map! T... Read more

“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast. June 22, 2017 No comments

“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX Engineering, “A... Read more

ARISS SSTV Commemorative Activity June 21, 2017 No comments

All, In commemoration of our 20th anniversary, the ARISS team is planning to transmit a set of 12 SSTV images that capture the accomplishments of ARIS... Read more

All About Baluns (Ask Dave – KE0OG #73) June 21, 2017 No comments

Read more

Computer Logging Specifically for ARRL Field Day June 21, 2017 No comments

ARRL Field Day is upon us! If you’re still in the dark about how to use the logging software that your club or group will employ this weekend, these v... Read more

Two Repeaters One Antenna Feed Line June 21, 2017 No comments

“We had an opportunity recently to provide a unique duplexer system. The customer needed a single antenna feed line for two repeaters. This solu... Read more

Heathkit ® Precision RF Meter – HM-1002 – pre-order June 20, 2017 No comments

Finally, affordable laboratory-grade accuracy. And a whole lot more.   For about fifty years, SWR/power meters haven’t really changed at all. Un... Read more

Asteroid Named After Radio Amateur June 20, 2017 No comments

The International Astronomical Union on 13 April, rewarded the space physicist and radio amateur Asta Pellinen-Wannberg, SM3UHV, by designating a cele... Read more

W1AW Announces Field Day Bulletin Schedule June 20, 2017 No comments

Maxim Memorial Station W1AW at ARRL Headquarters has announced its Field Day 2017 bulletin schedule. The Maritime Radio Historical Society station K6K... Read more

InnovAntennas ‘Big Gun’ arrays June 20, 2017 No comments

InnovAntennas continue to supply the World’s top DX’ers with large antenna systems with over 55% of sales being into the USA and 10% into... Read more

INSPIRE-2 Ground Controllers Turn to Amateur Radio Rescue Stalled Satellite June 20, 2017 No comments

Amateur Radio came to the rescue of the INSPIRE-2 CubeSat, built by the University of Sydney in collaboration with the Australian National University,... Read more

K6AH Wins the June 2017 QST Cover Plaque Award June 19, 2017 No comments

The winning article for the June 2017 QST Cover Plaque award is “AREDN — A High-Speed Data Network” by Andre Hansen, K6AH. The QST Cover Plaque... Read more

MFJ-998 automatic antenna tuner 1500 Watts – Review and Setup June 18, 2017 No comments

Full 1500 watts SSB/CW…Digital & Analog SWR/WattMeter . . .  All features of MFJ IntelliTuners– Ultra-fast, Safe Automatic Tuning . . . Wide... Read more

State and Local Governments Honor Amateur Radio in Advance of Field Day 2017 June 17, 2017 No comments

Each year as ARRL Field Day approaches, state and local governments have traditionally taken the opportunity to honor Amateur Radio in the form of var... Read more

Release of SDRconsole v3, called Preview 6 June 17, 2017 No comments

Preview 6, June 16th 2017 What’s New A lot of new features, for example: Airspy server Recording sceduler Signal history Receiver pane Schedule... Read more

Icom ID-4100 D-Star – Review June 16, 2017 No comments

Since the introduction of D-STAR in 2001, Icom has been committed to improving and advancing the D-STAR experience. The ID-4100A and it’s advance tech... Read more

ARRL Field Day Safety – Ham Radio Q&A June 16, 2017 No comments

Photo Credit : W2VK Field Day is fast approaching and soon this empty field behind me will be bustling with activity. On the fourth full weekend of Ju... Read more

Quicker-Turnaround Digital Modes in Experimental Stage for WSJT-X Suite June 16, 2017 No comments

Recent sporadic-E propagation openings on 6 meters and elsewhere have pointed up the need for a digital mode having faster turnaround time than curren... Read more

Federal Register Publishes New MF/LF Rules, But Operation is Not Yet Legal June 15, 2017 No comments

  The FCC Report and Order (R&O) spelling out operational rules to allow secondary Amateur Radio access to 630 meters and 2,200 meters now ha... Read more

CAMSAT CAS-4A & 4B Linear Transponder Payloads Launched June 15, 2017 No comments

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All About Baluns (Ask Dave – KE0OG #73)

Wed, 06/21/2017 - 12:55

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  Unique in the world:  6 bands – no traps – 1 feedline – no tuning – perfect performance The new version of the OB12-6, even better, even more unbelievable               OB12-6   12 Element, 6 Band            ... Read more

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VHF Two Repeaters One Antenna Feed Line June 21, 2017 No comments

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RatPak VHF – Six antenna 1 kW remote switch for 2 meters VHF band without controller, N-type connectors May 17, 2017 No comments

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Computer Logging Specifically for ARRL Field Day

Wed, 06/21/2017 - 08:55

ARRL Field Day is upon us! If you’re still in the dark about how to use the logging software that your club or group will employ this weekend, these videos may help. For those logging with the popular N3FJP Amateur Radio Software, developer Scott Davis, N3FJP has posted an 11-minute Quick Start video that should be sufficient to get you going.

If your group is using N1MM Logger+, then check out the 26-minute video by Doug Reece, AK4AO, of his Vienna Wireless Society presentation, in which he focuses on using this free contest software specifically for a Field Day Operation. The Vienna Wireless Society also has posted an instructive PDF prepared by AK4AO.

Source:ARRL

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Show More

Two Repeaters One Antenna Feed Line

Wed, 06/21/2017 - 08:36

“We had an opportunity recently to provide a unique duplexer system. The customer needed a single antenna feed line for two repeaters. This solution saved the customer two costs. One, the expense of hiring a tower climber. Also the recurring cost of additional tower space rental for a 2nd feed line and antenna. This is perfect for Amateur and Commercial applications.”

Watch the video to hear Ron describe the application and solution. 

 

BCD-440250: https://www.bridgecomsystems.com/coll…

BCR-40U: https://www.bridgecomsystems.com/coll…

BCD-2×440150 Band Pass/Band Reject Duplexer: New Product, call or email for specs.

For more information call 816-532-8451 or contactus@bridgecomsystems.com

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News ARISS SSTV Commemorative Activity June 21, 2017 in: News No comments

All, In commemoration of our 20th anniversary, the ARISS team is planning to transmit a set of 12 SSTV images that capture the accomplishments of ARISS over that time.  While still to be scheduled, we anticipate the SSTV operation to occur... Read more

Review MFJ-1835H Cobweb Antenna Review ( High Power version 1.5kW) June 22, 2017 in: Review No comments

For restricted spaces, 5-Bands: 20/17/15/12/10 Meters . . . Restricted space spoiling your operating fun? MFJ Cobweb puts your call back on the map! This five-band (20, 17, 15, 12, 10 Meters) half-wave Cobweb Antenna is perfect for restrict... Read more

App - Mobile CommCat 4 for Radio Control and Logging! June 12, 2017 in: App - Mobile No comments

CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with most popular radios and accessories. It requires a Windows XP or later computer. CommCat... Read more

Equipment Heathkit ® Precision RF Meter – HM-1002 – pre-order June 20, 2017 No comments

Finally, affordable laboratory-grade accuracy. And a whole lot more.   For about fifty years, SWR/power meters haven’t really changed at all. Un... Read more

POWER GENIUS XL PREORDERS ARE AVAILABLE June 12, 2017 No comments

POWER GENIUS XL PREORDERS ARE AVAILABLE THIS IS A RESERVATION ONLY – REMAINING BALANCE WILL BE DUE PRIOR TO DELIVERY Amplifier Price: $6999 Reservatio... Read more

Audio Amplied Speaker Microphone designed for the Elecraft KX 2 and KX3 transceivers June 06, 2017 No comments

Elecraft radios have acheived excellence in quality and design for the fast growing market of QRP Portable Operators. The AlexMic is a Audio Amplied S... Read more

ColibriNANO Direct Sampling HF/6M receiver [ User Manual ] June 04, 2017 No comments

  Read more

Palstar LA-1K – 1 kw LDMS Solid state amplifier May 28, 2017 No comments

LA-1K   1 kw LDMS Solid state amplifier – coming soon! RF Sensing 1000 Watt Amplifier covering 160m to 6m bands with LCD touch-screen display to... Read more

KP-1 Power Meter – KOHJINSHA – 5KW May 22, 2017 No comments

KP-1 is a SWR and Power meter employing current transformer covereing the frequency range of 1.8MHz through 30MHz. ■ A large scale analogue cross mete... Read more

ICOM IC-7610 – Pre-release Brochure May 19, 2017 No comments

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Flex Radio announces The Flex 6400 and 6600 series SDR Radios – Courtesy of Waters & Stanton May 19, 2017 No comments

Waters & Stanton, the SDR Transceiver pioneer supplier in the UK announced today the launch of the new Flex 6400 and 6600 series radios which will... Read more

Yaesu Luxury dual element microphone M-100 announced! May 17, 2017 No comments

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INRAD Microphones – 2017 Dayton Hamvention May 14, 2017 No comments

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Heathkit ® Precision RF Meter – HM-1002 – pre-order

Tue, 06/20/2017 - 17:55
Finally, affordable laboratory-grade accuracy. And a whole lot more.  

For about fifty years, SWR/power meters haven’t really changed at all. Until now.Consider your choices the past decade:

  • For a few hundred dollars, there are low-end SWR/wattmeters with 5-10% accuracy.
  • For nearly a thousand dollars, you can buy the same low accuracy with a famous brand label. Or a complicated or uncalibrated small-company/hobby/kit unit with a few extra bells and whistles bolted on, maybe some extra buttons, pretty blue display, or high-SWR beeper.
  • For about the price of a new car, you can buy a delicate laboratory-grade 1% precision bench-use-only wattmeter with one sensor. Which you then must remove from service and pay up to a thousand dollars to recalibrate every two years. 

In other words, it’s been 50 years of compromise, plus occasional new products that “solve” problems you don’t actually have.

Until today.

Now there’s the Heathkit® HM-1002: Intuitive, intelligent, affordable, accurate measurement. The next-generation Heathkit® HM-1002 Precision RF MeterTM picks up where our venerable SWR/wattmeters of yesteryear — and everyone else’s — stopped.  Incredible new features, yet simple for beginners to assemble and understand. And you can build and maintain it yourself.

Frequency. Power. SWR. ERP. Efficiency. Ergonomic. Multi-sensor. Our patent filing was 62 pages long for a reason.

Does your SWR/power meter display your transmit frequency?  The Heathkit® Precision RF MeterTM does. Have a homebrew transmitter with no frequency display? Does your vintage transceiver have a 1KHz analog display with dial backlash? Problem solved. While you’re monitoring SWR and power, read your transmit frequency too — in 6 digits, to 100Hz accuracy. Your station just got a whole lot better.

Plan on working 60 meters? Have neighbors? Great. Know your Effective Radiated Power? Your HM-1002 does. It computes ERP for you, even alerts you if you exceed regulations. Good thing, since knowing your ERP is required by law. No other meter does this (or will, due to our patent filing).

Interested in your station efficiency? Use the HM-1002 to measure the efficiency of each component in your transmission chain, from exciter to antenna and back to receiver. And monitor it continuously.

Ready to upgrade from measuring “SWR”?  Engineers use Return Loss instead, because it permits more sensitive and precise measurement in the SWR range you actually operate in most of the time. But take your pick: The HM-1002 will tell you forward power and reflected power, in Watts or dBm, and SWR, and Return Loss.

Need Peak power? Check. RMS power? Check. Average power? Check. PEP power? Check. All right there in front of you. Just press a button.

Operate QRPp? No problem. QRO? No problem. We autorange. No power-range buttons, knobs, dials, slugs, switches, parts swapping, cable plugging, computing power factors….  Any power level from 50 mW to 2kW, from MF to VHF, right there on the display. Whether you’re working on your QRP 1000 Miles Per Watt Award or DXCC, you’ll operate at either end of the legal power range with equal ease.

All this with just a push of a button. No more hunting through tedious cryptic menus to find your most-used functions. Does your SWR/power meter have a button to tell you your station efficiency? How about ERP? No, of course not. Now it can. You just need a Heathkit HM-1002.

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Measure and compare multiple points in your system. Why didn’t anyone think of this before? Sure, a few pricey meters have independent sensor inputs. Here’s what’s better: Cooperating sensors. The HM-1002’s patent-pending design incorporates a model of your station, and uses it to compare different points and compute or estimate measurements that you’d have to work out with a calculator using any other instrument. Not just two sensors — two sensors that work together. Why did your SWR suddenly skyrocket — because your antenna tuner arced and failed, or because your feedline has water incursion? How much of the power developed in your station is actually getting out of your antenna? Now you’ll know.
High precision, incredible accuracy. The Heathkit® Precision RF MeterTM ships with a pre-calibrated reference device and Heathkit® assembly instructions that let you achieve better than 5% accuracy. Actually, much better. Frankly it’s been a challenge to find lab equipment good enough to measure our accuracy : Those expensive name-brand meters you hear about are only 5-7% accurate, and only for full-scale signals on a single frequency and limited power range — just not up to the job. But we’re in the lab now, working to confirm better than a nominal 2% accuracy. That’s for all frequencies. And all power levels. Automatically computed and displayed, shown right there on the color display. No knobs to adjust, or Correction Factor error charts to estimate what an accurate meter would have said, or complicated sensor characterization procedures. Just… accuracy. The real answer, displayed right in front of you.
Great for fixed or portable use. The HM-1002 runs off both AC and DC. Our AC adapter option has a no-noise design to minimize RFI. No noisy switching power supply to send spurs throughout your receiver. If you already have 12VDC, at home or in the field, just plug it in, using Anderson Powerpole connectors.
Legendary Heathkit manual and build experience. The manual takes you step-by-step through assembly and calibration, and explains the electronics & operation. It’s clearly written and easy to understand. Complexity designed out, amazing functionality designed in. It’s a Heathkit®.

Technical specs (preliminary, subject to update)

Power / SWR / Return Loss Accuracy:

  • Meter: 2% nominal for Power, SWR, Return Loss.
  • Sensors: Specs vary per sensor model. 5% or better when assembled as directed (no promises yet but we actually hope to beat 2%).

Power precision: Up to four displayed digits, measurement significance one part in 8,000 (125 PPM).
Frequency Accuracy & Precision: 6-digit precision, displaying 100Hz units with +/- 100Hz accuracy for MF, HF, 6 meters. Accuracy and precision always depend on sensor as well as meter. Frequency measurement requires a Heathkit® frequency-capable sensor; one is provided with each meter purchase.
Range: Frequency and power range depend on the sensor model(s) in use. With standard sensor, meter range is 50mW to 2kW power (17dBm to 63dBm) nominal, and 1.6MHz to 54MHz frequency nominal, when assembled as directed. (Subject to change) As with any power device, true SWR handling capability varies with sensor and depends on applied power level, and we will report lab results here as they are confirmed.
Front panel: Sensor/mode cluster, power cluster, SWR/return cluster, color graphic LCD display, calibrated DigilogTM bargraph, configurable visual alert.
Rear panel: Power jacks, sensor jacks, digital jack, audio annunciator.
Enclosure: Hardwood sides, plastic top/bottom, screwless top & front design with integral feet (patent pending).
Size: Approx. 2.2″ high x 5.5″ wide x 4.75″ deep (6 x 14 x 12cm).
Weight: 1 lb (0.5 kg) nominal.
Included: All kit parts, any required assembly hex wrenches, one sensor, silver solder, one six-foot (2m) indoor sensor cable.
Compliance/legal: RoHS. Optional AC power adapter is UL approved. Patent pending.
AC power: Optional AC adapter accepts 90-130 VAC 60 Hz pure sine wave (North American

standard), approx. 4 watts. 6ft (1.9m) power cord. (UK, Europe: 50 Hz compatible, but requires a different power adapter.*)
DC power: Accepts 12VDC nominal. Anderson PowerPole jack.
Tools required: Low-wattage soldering iron, wire cutters, needlenose pliers.
RFI/EMC & safety: No switching power supply brick. No mains line voltage (no 120VAC or 230VAC) in the box.
Accessories: (Coming soon) AC adapters, cables, more sensor models.

$ 575.00

NOTE TO INTERNATIONAL CUSTOMERS:
The Heathkit® HM-1002 Precision RF MeterTM will work around the world. When running on AC, it needs an AC power adapter to connect to your local electrical mains, and each country’s electrical mains service is different. We may still be qualifying the electrical adapter for your country. Contact us about availability in your region. We have 120VAC 60Hz adapters qualified for North America and parts of Japan, and Euro and UK style adapters qualified for 200-240VAC 50Hz serving most of the world outside North America.

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Asteroid Named After Radio Amateur

Tue, 06/20/2017 - 14:26

The International Astronomical Union on 13 April, rewarded the space physicist and radio amateur Asta Pellinen-Wannberg, SM3UHV, by designating a celestial body in her name, Asteroid 11807 Wannberg. 

The Swedish national amateur radio society SSA reports: 

Asta Pellinen-Wannberg is a professor at the Department of Physics at Umeå University. She has made a ground-breaking effort to use scattering radar when studying meteors that are activated when small particles penetrate the atmosphere.

The method is now applied to about ten stations around the world. It increases the ability to study different large flows, smaller particles and details in their interaction with the atmosphere, says Asta Pellinen-Wannberg.

Asta is chair of the Swedish National Committee for Radio Science SNRV and has researched together with Gudmund Wannberg, SM3BYA, who served as Technical Manager at EISCAT Radar in Kiruna and Associate Professor at Umeå University.

Source:IARU

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W1AW Announces Field Day Bulletin Schedule

Tue, 06/20/2017 - 11:01

Maxim Memorial Station W1AW at ARRL Headquarters has announced its Field Day 2017 bulletin schedule. The Maritime Radio Historical Society station K6KPH will transmit the W1AW Field Day 2017 bulletin for the benefit of West Coast stations.

Friday, June 23

Mode Pacific Mountain Central Eastern UTC CW 5:00 PM 6:00 PM 7:00 PM 8:00 PM 0000 (Sat) Digital 6:00 PM 7:00 PM 8:00 PM 9:00 PM 0100 Phone 6:45 PM 7:45 PM 8:45 PM 9:45 PM 0145 CW 8:00 PM 9:00 PM 10:00 PM 11:00 PM 0300

Saturday, June 24

Mode Pacific Mountain Central Eastern UTC CW 7:00 AM 8:00 AM 9:00 AM 10:00 AM 1400 Phone 8:00 AM 9:00 AM 10:00 AM 11:00 AM 1500 CW 5:00 PM 6:00 PM 7:00 PM 8:00 PM 0000 (Sun) Digital 6:00 PM 7:00 PM 8:00 PM 9:00 PM 0100 Phone 6:45 PM 7:45 PM 8:45 PM 9:45 PM 0145

Sunday, June 25

Mode Pacific Mountain Central Eastern UTC CW 7:00 AM 8:00 AM 9:00 AM 10:00 AM 1400 Phone 8:00 AM 9:00 AM 10:00 AM 11:00 AM 1500 Digital 9:00 AM 10:00 AM 11:00 AM 12:00 PM 1600

K6KPH Field Day Bulletin Schedule

Saturday, June 24

Mode Pacific Mountain Central Eastern UTC CW 7:30 AM 8:30 AM 9:30 AM 10:30 AM 1403 CW 5:30 PM 6:30 PM 7:30 PM 8:30 PM 0030 (June 25 in US) Digital 6:30 PM 7:30 PM 8:30 PM 9:30 PM 0130

Sunday, June 25

Mode Pacific Mountain Central Eastern UTC CW 7:30 AM 8:30 AM 9:30 AM 10:30 AM 1430 Digital 9:30 AM 10:30 AM 11:30 AM 12:30 AM 1630

 

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W1AW will operate on its regularly published frequencies. 

CW: 1.8025, 3.5815, 7.0475, 14.0475, 18.0975, 21.0675, 28.0675, and 147.555 MHz.

Digital: 3.5975, 7.095, 14.095, 18.1025, 21.095, 28.095, and 147.555 MHz.

Phone: 1.855, 3.990, 7.290, 14.290, 18.160, 21.390, 28.590, and 147.555 MHz.

W1AW will transmit the Field Day bulletin using 45.45-baud Baudot (RTTY), PSK31 in BPSK mode, and MFSK16 in that order.

The W1AW EchoLink conference server W1AWBDCT will also carry the W1AW Field Day bulletin in real time during the transmissions.

K6KPH will transmit on CW on these frequencies: 3.5815, 7.0475, 14.0475, 18.0975 and 21.0675 MHz. K6KPH will transmit using RTTY, BPSK31, and MFSK16, in that order, on 7.095 and 14.095 MHz. The K6KPH schedule is accurate as of June 19, 2017. 

Additional transmissions or changes in the schedule will be posted.

 

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InnovAntennas ‘Big Gun’ arrays

Tue, 06/20/2017 - 07:03

InnovAntennas continue to supply the World’s top DX’ers with large antenna systems with over 55% of sales being into the USA and 10% into Japan. Ray Higgins, W2RE purchased 4 x 6el LFA Yagis (9.5m booms) for 50MHz last year stacking them vertically on a 100′ fully rotating tower. Ray made these comments today on his remote ops installation.

SiX METERS!

The new 6M ARRAY in Eastport, Maine is working fantastic. Thanks to Justin Johnson from Innovative Antennas for modeling the array before we installed, we went with smaller boom (7EL) and closer stacking on his suggestion for this particular install and its paid off big time with us working UB7 well ahead of anyone else in the US antennas @ 100’/80’/60’/40′.

G0KSC Designed low noise Yagis are very popular for EME on VHF too due to their super-quiet properties.

Rays antenna:

7 element 50MHz LFA2 WOS Yagi (9.5m)

A 7 element  low-noise LFA2 Yagi Bent Element Yagi

The 7LFA2WOS was originally designed for G3WOS

The G0KSC LFA Yagi is a major step forward in the development of the Yagi Antenna;  it provides a low-noise front-end for your radio so you hear more weak signals. This 7 element 50Mhz LFA2 is another exciting slant on the LFA design with both the last third of both the reflector and first director elements being bent towards the driver loop in order to enhance performance. Incredible levels of F/B have been achieved providing the ultimate in rear-end suppression.

This antenna has very highly suppressed lobes in both azimuth and elevation plots and therefore is idea for very noisy city locations. If you want to beat the noise in a mid-sized 6m antenna, this is the one for you!

Performance

12.90dBi @ 50.150MHz

30.74dB @ 50.150MHz

Peak Gain: 12.96dBi

Peak F/B: 33.75dB

Power Rating: 5kw

SWR: Below 1.1:1 from 50.00MHz to 50.450MHz

 

Stacking Distance: 5.5 -7.5m ( 6.8m recommended)

2 Stacked Gain @ 6.8m spacing: 15.75dBi

2 Stacked F/B: 37.83dB

2 Stacked Gain @ 6.8m Spacing 10m above ground: 20.72dBi

Boom Length: 9.5m

Weight: 9.03Kg / 19.19LB

Turning Radius: 4.974m / 16.3ft

Wind Loading: 0.36 Square Metres / 3.93 Square feet

Wind Survival: 176KPH / 110MPH

Other options available if higher wind loading/survival is required.

Specification

This antenna is made with tapered elements 5/8 inch (15.88mm) centres and 1/2 inch (12.7mm) outer sections. The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts.  Boom is 1.75 inch square 10SWG  (3.2mm thick) aluminum in the centre, tapering at the tips to 1.5 inch 16SWG (1.6mm wall) at the tips. A boom guy system is provided with this antenna.

Our antennas are constructed with the best quality materials in order that the best mechanical construction can be achieved, not the cheapest and most profitable! Even a digital caliper is used (with an accuracy of .01mm) to measure the elements during production to ensure they are within 0.2mm of what they should be, ensuring they work as well as our software model predicts.

Note: Much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make up of our antennas have least effect on performance and pattern degradation. More information can be found here

  • Marine grade Stainless Steel Fittings
  • Original Stauff Insulation clamps
  • Mill finished boom and elements for highest levels of accuracy
  • Sales price £349.95

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For restricted spaces, 5-Bands: 20/17/15/12/10 Meters . . . Restricted space spoiling your operating fun? MFJ Cobweb puts your call back on the map! T... Read more

“Generators” is the topic of the new (June 22) episode of the “ARRL The Doctor is In” podcast. June 22, 2017 No comments

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INSPIRE-2 Ground Controllers Turn to Amateur Radio Rescue Stalled Satellite

Tue, 06/20/2017 - 06:51

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Amateur Radio came to the rescue of the INSPIRE-2 CubeSat, built by the University of Sydney in collaboration with the Australian National University, and the University of New South Wales. According to Wireless Institute of Australia (WIA), the CubeSat is designed to “explore the lower thermosphere, for re-entry research and in-orbit demonstration of technologies and miniaturized sensors” and is part of the QB-50 constellation of research CubeSats. Its operational frequency was coordinated by IARU to be in the satellite segment of the 70-centimeter Amateur Radio band.

After its deployment from the International Space Station (ISS) in late May, INSPIRE-2 showed no signs of life. The engineering group on the ground tested various scenarios on the INSPIRE-2 engineering model, concluding that the spacecraft’s battery had depleted due to the CubeSat’s extended stay on board the ISS prior to orbit. The ground controllers theorized that the satellite was trapped in an endless loop, but still listening while trying to deploy its antenna, making reception of signals from Earth difficult.

The ground team devised a set of commands that, if received, would instruct the satellite to wait until its battery was charged before attempting to deploy its antenna. UNSW and ANU ground stations transmitted the recovery command without success, however, eventually deciding that more power was needed to overcome the lack of receiver sensitivity caused by the still-stowed antenna.

PI9CAM at the CAMRAS Foundation Dwingeloo Astronomic Observatory in Leiden, the Netherlands, responded to a call to the moonbounce community and offered to transmit a high power signal using a 25-meter dish that’s normally used for radio astronomy but also for EME.

Success of the approach was confirmed on June 11, and Dimitris Tsifakis, VK1SV, who is part of the ANU team, subsequently was able to send commands to the satellite from the ANU Earth station for the first time. The satellite had come back to life!

WIA called it, “a wonderful example of successful collaboration between radio amateurs and the academic community.”

The QB50 program involves a coordinated launch of 50 CubeSats from the ISS to undertake three integrated space research studies, supplemented by additional research investigations by individual CubeSat teams; some QB50 participating spacecraft carry Amateur Radio payloads. — Thanks to WIA News

Source:ARRL

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K6AH Wins the June 2017 QST Cover Plaque Award

Mon, 06/19/2017 - 09:45

The winning article for the June 2017 QST Cover Plaque award is “AREDN — A High-Speed Data Network” by Andre Hansen, K6AH.

The QST Cover Plaque Award — given to the author or authors of the most popular article in each issue — is determined by a vote of ARRL members on the QSTCover Plaque Poll web page. Cast a ballot for your favorite article in the July issue today.

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MFJ-998 automatic antenna tuner 1500 Watts – Review and Setup

Sun, 06/18/2017 - 08:00

Full 1500 watts SSB/CW…Digital & Analog SWR/WattMeter . . . 
All features of MFJ IntelliTuners– Ultra-fast, Safe Automatic Tuning . . . Wide Tuning Range (12-1600 Ohms from 1.8 to 30 MHz ) . . . Radio Interfaces . . . Built-in Antenna Switch for two coax/long wire . . . Automatic Bypass protects your amplifier . . . Field Upgradeable Software . . . Very Compact!

The MFJ-998 Full Legal Limit 1500 Watt Intellituner takes you to the final level in automatic antenna tuners. With a capability of 1500 watts SSB and CW, coupled with automatic tuning, your high-power station can now operate essentially hands-free even when frequency and band changes are made.

Fast Automatic Tuning

The MFJ-998 instantly matches impedances from 12-1600 ohms using MFJ`s exclusive IntelliTune, AdaptiveSearch and InstantRecall algorithms with over 20,000 VirtualAntenna Memories. When you key your transmitter, MFJ`s InstantRecall checks to see if that frequency has been used before. If so, tuning is instantaneous. If not, MFJ`s IntelliTune algorithm (based on MFJ`s efficient SWR Analyzer technology) measures the impedance, snaps the necessary components in place, and then fine-tunes the SWR. If the antenna impedance is outside the tuner`s measurement range, MFJ`s Adaptive Search algorithm measures the frequency and determines only relevant component values — which are then searched for fast tuning.

Safe Automatic Tuning and Amplifier Protection

The MFJ-998 includes MFJ’s Amplifier Bypass Control — an MFJ exclusive feature! When used with a transceiver interface cable, tuning is safe and “stupidproof”! When a tuning cycle is initiated, the MFJ-998 first bypasses any in-line amplifier. Next, the MFJ-998 initiates a low-power CW tuning carrier from your transceiver. When tuning is complete, the MFJ-998 reverts your transceiver to its prior power and mode, and re-enables the amplifier. This entire cycle typically takes less than a second! Finally, if the MFJ-998 cannot find a match better than a preset amplifier SWR trip-point, the amplifier stays bypassed to provide automatic SWR protection for your amplifier — another MFJ exclusive!

Analog SWR/Wattmeter

A large analog Cross-Needle SWR/Watt-meter displays selectable 300/60 watt or 3000/600 watt forward/reflected full-scale ranges. You can even select automatic power ranging — the best power range is automatically selected for you.

Digital LCD SWR/Wattmeter

A two-line, 16-character backlit LCD meter displays SWR, forward/reflected power, frequency, antenna selected, an auto-ranging bargraph power indication,
and much more. You can even read the final matching inductor and capacitor values should you want to build your own fixed matching network. Simple menus
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MFJ VirtualAntenna Memory

MFJ new VirtualAntenna Memory system gives you 4 antenna memory banks for
each of 2 switchable antenna connectors. Select up to 4 antennas on each antenna connector. Each antenna has 2500 memories, 20,000 total. Has two coax connectors and a binding post for end-fed long wire antennas.

Download and Upgrade Remotely

Field upgradeable firmware via the serial port — download and upgrade your MFJ-998 as new features are introduced!

Plus Much More!

Built-in radio interface provides control of most amateur transceivers.

Automatic bypassing when excessive tuning power or power in excess of 1500 watts is applied.

Use balanced line antennas with external MFJ-912, 1.5 kW 4:1 balun.

MFJ-998 is the smallest full legal-limit auto-tuner in the world! 13Wx4Hx15D
inches fits easily into your ham station. Weighs just 8 pounds — great portability! Requires 12-15VDC at 1.4 amps maximum or 110 VAC with MFJ-1316.

Pre-wired Rig Interface
Cables for MFJ-929/998$ 699.95 amzn_assoc_placement = "adunit0"; amzn_assoc_enable_interest_ads = "true"; amzn_assoc_tracking_id = "qn0c-20"; amzn_assoc_ad_mode = "auto"; amzn_assoc_ad_type = "smart"; amzn_assoc_marketplace = "amazon"; amzn_assoc_region = "US"; amzn_assoc_linkid = "4969cf2edaec6bf602678d298f572f59"; News Asteroid Named After Radio Amateur June 20, 2017 in: News No comments

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State and Local Governments Honor Amateur Radio in Advance of Field Day 2017

Sat, 06/17/2017 - 16:55

Each year as ARRL Field Day approaches, state and local governments have traditionally taken the opportunity to honor Amateur Radio in the form of various proclamations. This year is no exception.

  • In Nevada, Governor Brian Sandoval has proclaimed June as Amateur Radio Month. Sandoval’s proclamation cited the ability of Amateur Radio volunteers “to provide their tireless service, personal equipment, and technological capabilities in the interest of the citizens of Nevada and the United States.” He also praised Amateur Radio’s part in encouraging the pursuit of educational and career opportunities in science, technology, engineering, and mathematics (STEM) fields.
  • The Board of Commissioners in Palm Beach County, Florida, have proclaimed June 19-25 as Amateur Radio Week. The proclamation takes note of ARRL Field Day’s role as an emergency preparedness exercise, praised Amateur Radio volunteers’ “countless hours” in supporting communication in the wake of disasters and emergencies as well as for community events, and expressed appreciation for the SKYWARN weather-spotting program. 
  • Idaho Governor Butch Otter has proclaimed June 19-25 as Amateur Radio Week in his state, to recognize those who volunteer to support emergency communication after conventional telecommunications fail. Otter also noted ARRL Field Day as an emergency preparedness exercise as well as a public demonstration of “skills and readiness to provide self-supporting communications without further infrastructure.”
  • In declaring June 19-26 as Amateur Radio Operator Week, Texas Governor Greg Abbott noted Amateur Radio’s contribution to technology as well as at times “when other forms of communication may be unavailable or unreliable, Amateur Radio operators have stepped into the void to relay critical emergency information.” Abbott concluded, “In times of crisis and in times of calm, ham radio operators’ commitment to community remains steadfast.”
  • In Florida, Governor Rick Scott has proclaimed June 19-25 as Amateur Radio Week, in recognition of Amateur Radio’s contributions in providing “a critical communications link” in disasters and emergencies as well as at public events. He also cited the role radio amateurs play in the SKYWARN program.
  • New Hampshire Governor Christopher Sununu declared June as Amateur Radio Month in the Granite State, citing the Amateur Radio Emergency Service (ARES) program and Amateur Radio volunteer efforts in emergencies and during public events. “Amateur Radio once again proved its undisputed relevance in the modern world by providing emergency communications when other systems failed in the aftermath of the Boston Marathon bombing and hurricanes Sandy and Katrina,” the proclamation said.
  • The City of Poway, California, has declared the week of June 17 as Amateur Radio Field Day Week there. A proclamation is to be presented on June 17 during a ham radio breakfast gathering, at which members of the City Council will be present. The proclamation cites the value of Amateur Radio in providing public service and emergency communication.
  • In Illinois, Governor Bruce Rauner has proclaimed June as Amateur Radio Month. His proclamation noted that Amateur Radio “provides excellent volunteer emergency communications” for various agencies. It also points out that “by continuous learning and experimentation, Amateur Radio operators help to forward the science of electronics and radio-related communications” and inspires young people to pursue career opportunities in radio and electronics.
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  • In Massachusetts, Governor Charles Baker has proclaimed June 24 as Amateur Radio Day. His proclamation cited Amateur Radio’s role in emergency and disaster communication as well as its role in providing “community support and technical training to local service clubs, organizations, and interested citizens.” In separate resolutions, the Massachusetts House and Senate commended ARRL Field Day.
  • In Indiana, Governor Eric Holcomb has proclaimed June 19-25 as Amateur Radio Week. He cited Field Day’s function as an emergency preparedness exercise and recognized Amateur Radio’s role in emergency response and communication support for public events.
  • In South Carolina, the Grand Strand Amateur Radio Club (GSARC) on June 13 accepted an Amateur Radio Week proclamation from the City of Myrtle Beach.

Field Day takes place June 24-25. The Field Day Locator displays public Field Day sites that members of the public and media can visit.

Source: ARRL

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News Asteroid Named After Radio Amateur June 20, 2017 in: News No comments

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Release of SDRconsole v3, called Preview 6

Sat, 06/17/2017 - 11:05
Preview 6, June 16th 2017 What’s New

A lot of new features, for example:

  • Airspy server
  • Recording sceduler
  • Signal history
  • Receiver pane
Schedule
  • Beta 1 – August 2017 with Data Anayser.
  • Beta 2 – October 2017 with Remote Server.
  • Release – December 2017.
Known Problems
  • External radio still not working properly when using the IF output, this is high on the to-do list
  • Ettus b210 may not work, in fact it may crash the program, this will be confirmed soon

There are no guarantees at all – this is a taster of what’s to come. The kit expires on December 13th, 2017.

Updates

Join the Yahoo! group for links to intermediate kits created before beta 1 in August 2017.

 

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Icom ID-4100 D-Star – Review

Fri, 06/16/2017 - 08:29

Since the introduction of D-STAR in 2001, Icom has been committed to improving and advancing the D-STAR experience. The ID-4100A and it’s advance technology does just that! The upgraded user interface and new enhancements provide a product other digital voice modes cannot match!

Output power   50W, 15W, 5W (Hi, Mid, Low) RX frequencies:   118-174, 230-550MHz Receiver type:   Dual conversion superhetrodyne User friendly

The ID-4100A’s full dot-matrix display gives the user the ability to see a lot of information on 

The DV/FM near repeater search function assists you in accessing nearby repeaters, even in areas you visit for the first time. The function searches for nearby repeaters using the repeater memories with the GPS position information. To use the near repeater search function, the position data of the repeater is required. The ID-4100A will ship with the D-STAR repeater memories preprogrammed, but the position data of some D-STAR repeaters may not be entered or exact.

Built-in GPS

The integrated GPS receiver shows your own position, course, speed and altitude on the display and can be used for exchanging position reports, D-PRS and searching for nearby repeaters.

Voice & data storage

Add a microSD* card to store various information including voice memory, TX voice message, QSO log, RX history log, and GPS log data. Memory channels and other settings can be saved and loaded into the transceiver. 
* MicroSD card is sold separately.

Android™ and iOS™ apps available

Install the UT-137 Bluetooth® board and download the RS-MS1I (for iOS™ devices) or RS-MS1A (for Android™ devices) to enable you to wirelessly connect to the ID-4100A and remotely set the DR functions, link with a map application, and send/receive messages over the DV mode. In addition, pictures taken by a smart device can be transmitted via the DV Fast Data mode or DV mode.

Download from Google Play™ >   |   Download from Apple’s App Store > 

Additional features
  • Data place in voice frames transfer data 3.5 times faster (3480 bps) than in the conventional DV mode (with voice).
  • Terminal mode and access point mode
  • The QUICK key allows instant access to menus listing dedicated functions depending on mode
  • Multiple scan functions for Memory/Bank scan, Full scan, Band scan, Program scan, Program link scan, Duplex scan Tone scan, and DR scan
  • 16 channels of DTMF memory (24-digit)
  • CTCSS/DTCS signaling with the split tone functions (analog mode)
  • 8.33 kHz air band channel reception
  • Auto repeater function
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ARRL Field Day Safety – Ham Radio Q&A

Fri, 06/16/2017 - 07:16

Photo Credit : W2VK

Field Day is fast approaching and soon this empty field behind me will be bustling with activity. On the fourth full weekend of June more than 40,000 hams throughout North America hit the airwaves in what is billed the world’s largest amateur radio event. Of course the purpose of Field Day is to set up a temporary amateur radio station- often in a non-traditional location and operate for a 24 hour period. Working in the wild like this can bring out a myriad of challenges, the largest, not withstanding, is operator and station safety.

Resources:
ARRL Field Day: http://www.arrl.org/field-day

 

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Fri, 06/16/2017 - 06:57

Recent sporadic-E propagation openings on 6 meters and elsewhere have pointed up the need for a digital mode having faster turnaround time than currently available software versions offer. A recent WSJT-X reflector discussion allowed that, while the slow ’JT modes like JT65 and JT9 have excellent sensitivity, their 1-minute long transmissions may not permit completion of a contact when evanescent signals pop up and quickly disappear under certain E-skip conditions. MSK144 and the fast JT9 submodes allow much shorter transmissions, but they do not offer the multi-decode capability that JT65 users find so effective. Iain MacDonnell, N6ML, was among those remarking that, while the use of JT65 for working E-skip on 6 meters has really taken off, it’s too slow to be practical for openings that only last a couple of minutes or so.

Joe Dzekevich, K1YOW, of Harvard, Massachusetts, sounded a similar theme. “A few days ago we had a great opening on 6 meters, especially here in the New England USA area, given our latitude,” he noted. “I often find that often one cannot complete a QSO due to QSB and the ins and outs of Es. Yet, being a propagation buff, I love the idea that I can leave the rig on 50.276 in JT65 mode and then see who I hear throughout the day via PSK Reporter.”

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WSJT-X developer Joe Taylor, K1JT, weighed in to express his appreciation to all who shared their ideas and experiences using JT9 and JT65 modes during recent multi-hop E-skip openings on 6 meters.

“We are very much aware that a mode with most of the excellent characteristics of JT65, but with faster turnaround time, would be a big winner in such situations,” Taylor commented on behalf of the WSJT-X development team. “We are experimenting with several such possibilities. Tentative goals include 15-second T/R sequences, sensitivity around S/N = –20 dB, occupied bandwidth less than that of JT65, and capability to decode as many as 10 or 20 signals in a 2-kHz bandwidth.”

But, Taylor added, developing new modes takes a lot of time, and results are not guaranteed. “We will report significant progress if and when available,” he pledged.

According to the WSJT-X page, JT9 is optimized for LF, MF, and HF, and it’s some 2 dB more sensitive than JT65 while using less than 10% of the bandwidth. Both JT9 and JT65 permit DX contacts at very low power levels and modest antennas. — Thanks to Joe Taylor, K1JT

Source:ARRL

How to get on JT65

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Thu, 06/15/2017 - 16:41

 

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The FCC Report and Order (R&O) spelling out operational rules to allow secondary Amateur Radio access to 630 meters and 2,200 meters now has appeared in the Federal Register, but radio amateurs still may not access the new bands. That’s because specific procedures now under development to detail how radio amateurs will notify the Utilities Technology Council (UTC) of their proposed station location, prior to commencing operation, still must undergo approval. The FCC said the notification requirement is necessary to confirm that a station is not located within 1 kilometer of an active power line communication (PLC) system.

“While the R&O has been published in the Federal Register, amateurs may not begin using the new bands until after the FCC’s Wireless Telecommunications Bureau issues a Public Notice outlining necessary procedures to notify UTC of pending operation, as the new rules require,” ARRL Regulatory Information Manager Dan Henderson, N1ND, said. “There is no timetable for that Public Noticeto be released. Amateurs need to practice patience.”

The FCC said the notification requirements it adopted “seek to strike a balance between amateur operations used for experimental purposes and PLC operation used by electric utilities for the reliability and security of electric service to the public.” Once notification procedures are in place, radio amateurs intending to operate on either band will notify UTC of their geographical location. If UTC does not object within 30 days, amateur operation may commence. The FCC turned away an ARRL request for direct access to the PLC database that UTC maintains.

Once UTC has developed the new information collection procedures, the FCC must submit them for review to the Office of Management and Budget (OMB). “The Commission will publish a separate notice in the Federal Register, inviting comment on the new information collection requirements adopted herein,” the FCC said in the R&O. “The requirements will not go into effect until OMB has approved [the notification procedures] and the Commission has published a notice announcing the effective date of the information collection requirements.”

In an unrelated action, the FCC allocated 1,900-2,000 kHz to the maritime mobile service (MMS) on a primary basis for non-Federal use in ITU Regions 2 and 3, and limited the use of this allocation to radio buoys on the open sea and the Great Lakes. Amateur Radio was upgraded from secondary to primary in the 1900-2000 kHz segment in 2015.

Source:ARRL

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Thu, 06/15/2017 - 13:06

 

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CAMSAT has announced the launch of its CAS-4A and CAS-4B linear transponder payloads. These payloads piggyback on the OVS-1A and OVS-1B optical remote sensing satellites, which were launched along with the hard X-ray modulation telescope (HXMT) satellite aboard a CZ-4B rocket from Jiuquan Satellite Launch Center at 03:00 UTC on June 15, 2017. Both satellites are in a 43 degree inclination orbit with an apogee of 524 km. Keplerian elements are not yet available at the time of this writing. This article will be updated with Keplerian element information when available.

Both satellites carry 20 kHz U/v linear transponders as well as CW beacons and a digital telemetry downlink. Frequency information is as follows:

CAS-4A – U/v Inverting Analog SSB/CW Uplink LSB 435.210 MHz through 435.230 MHz Downlink USB 145.880 MHz through 145.860 MHz CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 4.8kbps GMSK CAS-4B – U/v Inverting Analog SSB/CW Uplink LSB 435.270 MHz through 435.290 MHz Downlink USB 145.935 MHz through 145.915 MHz CW Beacon 145.910 MHz. Digital Telemetry 145.890 MHz 4.8 kbps GMSK

For more information about these satellites, see the CAMSAT CAS-4A and CAS-4B News Release

Source:AMSAT

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