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All about Ham Radio
Updated: 2 hours 47 min ago

Secretive “Numbers Stations” Persist on HF

3 hours 5 min ago

For many years, unidentified radio broadcasts have been transmitting coded messages, using numbers, such as “6-7-9-2-6. 5-6-9-9-0.” Even today, tuning across the HF spectrum typically will yield a “numbers station,” a mechanical-sounding voice (male or female) methodically announcing groups of single-digit numbers for minutes on end. According to Radio World, you may have tuned into a spy agency’s numbers station transmitting coded instructions to their minions worldwide. Shades of “The Americans” TV spy drama, where characters routinely receive coded messages via radio.

Numbers station transmissions typically consist of a voice “reading out strings of seemingly random numbers,” explained Lewis Bush, author of Shadows of the State, a new history of numbers stations. “These are sometimes accompanied by music, tones or other sound effects,” he said. Paul Beaumont, an associate editor of Eye Spy Intelligence Magazine, a publication dedicated to espionage and intelligence, is quoted in the Radio World article as saying, “Voice (numbers) stations are known to be spy messages.”

The article said that one of the best-known numbers stations was “The Lincolnshire Poacher,” so called due to its use of “The Lincolnshire Poacher” folk song played on a pipe organ as an identifier. Radio amateurs used direction-finding equipment to pin down the station’s eventual location to an RAF base on Cyprus, the article said.

Source:ARRL

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Mode Usage Evaluation: 2017 was “the Year When Digital Modes Changed Forever”

7 hours 56 min ago

Club Log author and UK radio amateur Michael Wells, G7VJR, has reported that data compiled from 8,000 Club Log users indicates the proportion of FT-8 usage relative to other modes has risen dramatically since FT8’s introduction last year. Every few years, Wells has posted charts depicting mode usage on the amateur bands, based on log data uploaded to Club Log. Graphs he posted last week show the proportion of contacts on each mode for the last 20 years and then for the last 12 months.

“2017 was, of course, the year when digital modes changed forever with the advent of FT8,” said Wells. “It is a remarkable technical achievement, which has breathed life and enthusiasm into DXing for a whole new audience.”

Now out of beta testing, FT8 continues to capture the imagination of the Amateur Radio community, luring away many of those who had been using the popular JT65 “weak-signal” mode. FT8 is included WSJT-X, version 1.8.0-rc3, with several refinements from the original beta release. Among FT8’s biggest advantages is a shorter transmit-receive cycle, with contacts four times faster than with JT65 or JT9; an entire FT8 contact can take place in about a minute. Many DXpeditions now routinely include FT8 operation.

The new mode is named after its developers, Steven Franke, K9AN, and Joe Taylor, K1JT. The numeral designates the mode’s 8-frequency shift-keying format. Tones are spaced at 6.25 Hz, and an FT8 signal occupies just 50 Hz.

Wells reported that 8,000 Club Log users uploaded FT8 contacts last year, logging 46,000 discrete call signs in that mode. “For reference, in 2017 the total number of QSOs uploaded to Club Log (all modes) was 32 million,” Wells said. “Of that total, the number of QSOs made with FT8 was 4.8 million.” That works out to 15% of all contacts posted to Club Log, which may or may not be representative of Amateur Radio activity at large.

Wells’ graph for 2017 shows a dramatic increase in mid-2017 in the percentage of FT8 contact relative to other modes, by year’s end overtaking CW and SSB usage, already trending downward except for a significant bump in CW usage toward the end of the year. RTTY and PSK31 usage remained comparatively stable over the course of 2017. The usage of “other” undefined modes declined dramatically after the introduction of FT8.

Wells explained it this way. “On any given day [the graph shows] the percentage of QSOs logged with a particular mode, plotted for a year,” he told ARRL. “Say 100 QSOs were made on Wednesday, then, 55 of them were on FT8. It is not showing absolute levels of activity, just relative levels of activity.”

Wells pointed out that the data is smoothed, and the values are for a 28-day moving average. “Therefore, a weekend of only CW and no FT8 has little effect — the trend is gradually adjusted by ongoing activity, and not by shocks.”

Last fall, Taylor expressed some surprise about the “rapid uptake” in the use of FT8 on HF. Rather than viewing FT8 as a game-changer, however, Taylor told ARRL that he sees a dividing line between such digital modes and more traditional modes. As he sees it, SSB and CW are “general-purpose modes,” suitable for ragchewing, DXing, contesting, emergency communications, or whatever.

“FT8 and the other modes in WSJT-X are special-purpose modes,” Taylor said. “They are designed for making reliable, error-free contacts using very weak signals — in particular, signals that may be too weak for the more traditional modes to be usable, or even too weak to hear.”

Taylor pointed out that the level of information exchanged in most FT8 — and other similar digital modes — isn’t much more than the bare minimum for a valid contact. In addition to call signs and signal reports, stations may exchange grid squares and acknowledgments.

Source:ARRL

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C3S-JK – 2 Elements on 20M / 2 Elements on 15M / 2 Elements on 10M / 12 Foot Boom

Sat, 01/20/2018 - 2:08pm

The C3S-JK (Tribander) has been re-designed, optimized & Improved from the very popular Force 12 Tribander

Here are the important changes/features from the classic design ….

1. The feed point for 20M, 15M & 10M are connected using a transmission line, the same way as the JK-MidTri & JK-BigTri.

2. The mast mount position is right at the center of the antenna at 72″.

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The wave of software-based digital modes over the past several years has altered the atmosphere of the HF bands. Some suggest the popularity of modes... Read more

Everybody’s Trying the New FT8! November 02, 2017 No comments

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Goodbye FT8, Hello Olivia, The Magic HF Digital Mode October 24, 2017 No comments

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Review Yaesu FT DX 1200 [ Videos ] November 01, 2015 in: Review No comments

Yaesu FT DX 1200   Read more

News FCC Announces Plans for Partial Government Shutdown January 19, 2018 No comments

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20. “In the event... Read more

New Chinese Zhou Enlai Student Satellite Set to Launch January 19, 2018 No comments

The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named aft... Read more

AX Prefix will be on the Air for Australia Day January 18, 2018 No comments

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with th... Read more

Permanent WSPR beacon in Antarctica Now on the Air January 18, 2018 No comments

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The i... Read more

Department of Defense Interoperability Communication Exercise Deemed a Success January 18, 2018 No comments

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Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios January 16, 2018 No comments

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they... Read more

A Note to Members from ARRL President Rick Roderick, K5UR January 15, 2018 No comments

In the last few weeks, the ARRL’s Board of Directors has been the subject of an organized misinformation campaign. It is being orchestrated by a group... Read more

Fox-1D Amateur Radio CubeSat Launches Successfully, Now Designated as AO-92 January 15, 2018 No comments

Right on schedule at 0359 UTC on January 12, the solid-fueled first stage and ground-lit strap-on boosters of the Indian Space Research Organisation (... Read more

Ham radio CubeSat launch success January 13, 2018 No comments

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FCC Cites Auto Dealership for Causing Harmful Interference to Cell Phone Site January 10, 2018 No comments

The FCC Enforcement Bureau called on a North Dakota auto dealership “to stop operating devices that are causing interference to licensed radio operati... Read more

FCC Announces Plans for Partial Government Shutdown

Fri, 01/19/2018 - 3:52pm

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20.

“In the event of a partial government shutdown, because of available funding, the Federal Communications Commission plans to remain open and pay staff at least through the close of business on Friday, January 26,” the FCC said.

This means the FCC will continue to accept and process Amateur Radio license applications and grants at least for another week. During the 16-day 2013 government shutdown, the FCC retained eight employees “to conduct interference detection, mitigation, and disaster response operations.” Only one “senior management official” was left in the Wireless Telecommunications Bureau — which oversees Amateur Radio.

Source:ARRL

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Equipment Solar Power Pack Pro 60 July 20, 2015 No comments

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Retired Librarian Who Was Maine’s First Woman Radio Amateur Turns 108 September 26, 2016 No comments

Mary Cousins, ex-W1GSC, who was the first woman in Maine to obtain an Amateur Radio license, celebrated her 108th birthday on September 20. Now a resi... Read more

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App - Mobile US Amateur Radio Band Plan for Android May 06, 2015 No comments

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Koch Morse Trainer Pro – Android App January 12, 2015 No comments

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EchoLink for iOS version 2.2 is now available February 09, 2017 No comments

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News FCC Announces Plans for Partial Government Shutdown January 19, 2018 No comments

The FCC has issued a brief statement regarding its plans in the event of a partial government shutdown, which could start on January 20. “In the event... Read more

New Chinese Zhou Enlai Student Satellite Set to Launch January 19, 2018 No comments

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AX Prefix will be on the Air for Australia Day January 18, 2018 No comments

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with th... Read more

Permanent WSPR beacon in Antarctica Now on the Air January 18, 2018 No comments

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The i... Read more

Department of Defense Interoperability Communication Exercise Deemed a Success January 18, 2018 No comments

A November 2017 Department of Defense (DoD)-sponsored communications interoperability exercise involving Amateur Radio was a success, according to inf... Read more

Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios January 16, 2018 No comments

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they... Read more

Icom IC-7850/7851 Firmware Update (Version 1.2)

Fri, 01/19/2018 - 12:28pm

Icom have released a firmware update for the IC-7850/7851 HF Amateur Radio transceivers.

The firmware update provides the following improvements:

• A combination of [MIC] and [USB] is now selectable for the Modulation input connector selections in the SET MODE.
• The optional RC-28 directly connected to the IC-7850 or the IC-7851 can now be used as a desktop dial.
• Other performance improvements.

This firmware can be downloaded from the following URL from the Icom Inc website:

www.icom.co.jp/world/support/download/firm

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Antenna XR3-NV | HIGH PERFORMANCE 14 ELEMENT 20 / 15 / 10 METER MULTI-MONO CONTEST YAG June 03, 2016 No comments

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Digital Modes JTDX – Videos and Guides – FT8- JT65 – JT9 – T10 – WSPR January 08, 2018 No comments

  JT DX JT65 – JT9 – T10 – FT8 – WSPR Guides JTDX_User_Manual_EN_2018_01_08.pdf – (English language by VK7YUM with... Read more

JT-DX 18.1.0.30 with FT8 mode ! Released December 08, 2017 No comments

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“So many people have started using FT-8 on HF, but they leave all the other modes to die off, like Olivia. Olivia isn’t new, but it offers... Read more

Review QRP Rig Comparison , FT817 / X108G / X5105 / mcHF RS-918 September 25, 2017 No comments

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External Mic and PTT for the Elecraft KX2 & KX3 June 11, 2017 No comments

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Show More

Xiegu X5105 QRP HF SDR Radio by K6UDA – Review

Fri, 01/19/2018 - 6:56am

MFJ is the exclusive North American Distributor of this new ultra-portable multimode HF transceiver.  

Features a built-in highly efficient automatic antenna tuner, split frequency XCVR function, RIT receive fine tuning, NB noise suppressor, NR digital noise reduction, number notch, and computer-aided control functions.  

Super lightweight and portable, you can take it anywhere! The X5105 is equipped for desktop or handheld use and covers all modes HF + 6-Meters, SSB/CW/AM/FM/RTTY/PSK-31.  

Everything You`re Looking For! That`s what you get with XIEGU`s all-new X5105 ultra-portable multimode QRP transceiver marketed exclusively in the US by MFJ. Compare feature by feature, and you`ll quickly realize it`s like carrying a sophisticated full-sized station transceiver with you — in your  pocket!

Here are some of the many reasons why you`ll want a X5105:

 

    • General coverage receiver, 500 kHz to 30 MHz — plus 6 Meters 5-watts output, all bands, from 160 to 6 Meters (1.5-W AM).

 

    • All mode operation: SSB, CW, AM, FM, plus digital Smooth tuning, 1-Hz VFO resolution, A/B split  plus RIT Big 3.6″ LCD screen with rich display content, Noise Blanker, Digital Noise Reduction, plus Notch Filter!

 

    • Multiple Band-Pass Filters plus selectable AGC speed Computer interface for digital modes Built-in Keyer and CW trainer, Multi-funcition microphone, Built-in Automatic Antenna Tuner, High-capacity battery pack (3800 mAh)

 

    • Use as a handy talkie, has built-in speaker microphone.

 

    • Includes: Multi-purpose handheld microphone, DC power cord, USB cable, service card and instruction manual.

 

    • Built-in battery charger automatically cuts off when battery is fully charged.

 

    • Size: 6-5/8″ W x 3-5/8″ H x 1-7/8″ D Weight: 2.1 pounds

 

  • Exceptionally Low Price: $669.95
(adsbygoogle = window.adsbygoogle || []).push({}); VHF Baofeng UV9R Plus Waterproof – Dual Band FM VHF UHF December 18, 2017 No comments

Baofeng UV9R Plus Product parameters Frequency Range: VHF 136-174,UHF 400-520MHz Theoretical communication distance: 10 km Power: 15W Battery: Polymer... Read more

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CommCat 4 for Radio Control and Logging! June 12, 2017 No comments

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HamSphere 4.0 Mobile APP May 25, 2017 No comments

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A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m) January 16, 2018 No comments

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Log Periodic Dipole Array 13 element 10MHz – 54MHz High Performance LPD January 08, 2018 No comments

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CX-AUTO Switch – Kessler Engineering, LLC December 29, 2017 No comments

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“S-Units” is the topic of the episode of the “ARRL The Doctor is In” August 24, 2017 No comments

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Comparison: Elecraft KX3 and ICOM IC-7300 August 18, 2017 No comments

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Review of QRP Labs QCX QRP Radio November 30, 2017 No comments

“Unboxing, building and using the QRP Labs QCX single-band, 5-watt QRP radio. This advanced technology radio borrows ideas from software-defined... Read more

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New Chinese Zhou Enlai Student Satellite Set to Launch

Fri, 01/19/2018 - 6:42am

The 2U Zhou Enlai CubeSat, developed with primary and middle school students in China, is expected to launch on January 19. The satellite is named after the first Premier of the People’s Republic of China, who held office from 1949 until 1976. A report on the official Xinhua Net website said the CubeSat, constructed at Huai’an Youth Comprehensive Development Base in Jiangsu Province, has been transported to Jiuquan Satellite Launch Center, where a CZ-11 solid-fuel rocket will put it into orbit Friday.

 

“Twenty teenagers who participated in the development project accompanied the transport group to the launch center and will witness the lift-off,” Xinhua said.

 

The satellite appears to be the HA-1 satellite coordinated with the International Amateur Radio Union (IARU) to carry an Amateur Radio FM voice transponder and aerospace science education projects. According to the IARU Amateur Satellite Coordination pages, the HA-1 CubeSat is equipped with an Amateur Radio repeater and slow-scan television (SSTV) component, with an SSTV beacon that will post date, time, temperature, and location information on an SSTV frame.

The satellite has a downlink in the band 435-438 MHz, and an uplink in the band 144-146 MHz. Telemetry will be 9.6 k BPSK on 437.350 MHz. The FM voice downlink will be on 436.950 MHz, and the uplink is 145.930 MHz.  

Source:ARRL

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Uniden Advances Scanning with Digital Mobile Radio (DMR) Demonstrating our commitment to continually enhance the value and relevance of your investmen... Read more

ICOM IC-80AD March 10, 2015 No comments

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Review BITX-40 Unboxing by K7AGE January 11, 2017 No comments

“My BITX-40 40 meter SSB QRP transceiver kit has arrived from India. This kit isells for $59 including shipping. My kit took 17 days to arrive f... Read more

REVIEW: Connect Systems CS800 DMR mobile radio by VE3XPR August 10, 2015 No comments

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HAARP 2 Meter Antenna Review By M0OGY June 17, 2016 No comments

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Harbor Freight Solar Panel for Ham Radio [ Video ] May 07, 2016 No comments

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ICOM AH-710 Folded Dipole Antennas AH-710 April 16, 2015 No comments

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JT-DX 18.1.0.30 with FT8 mode ! Released December 08, 2017 No comments

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AX Prefix will be on the Air for Australia Day

Thu, 01/18/2018 - 6:46pm

The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with the letters AX, every Australia Day. Our national day this year falls on Friday 26th of January. This gives radio amateurs the chance to be part of the commemoration the First Fleet’s arrival in 1788 at Sydney Gove and the establishment of a European settlement at Port Jackson, with the raising of the British flag by Governor Arthur Phillip. 

On Australia Day many celebrate our country and culture. This includes the granting of awards, honours and the welcoming to citizenship of many immigrants. National flags will be flown and the celebrations include fireworks displays. 

The AX prefix is popular among prefix hunters and others. The use of a special QSL card is encouraged by the Wireless Institute of Australia. 

Author : Robert Broomhead – VK3DN

Source:http://www.wia.org.au/

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Review Testing the NEW GD-55+ for DMR July 12, 2017 No comments

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Permanent WSPR beacon in Antarctica Now on the Air

Thu, 01/18/2018 - 2:06pm

The DP0GVN WSPR now is in operation from the German Neumayer III Research Station of the Alfred Wegener Institute for Polar and Marine Research. The installation is part of a scientific project of the Technical University of Munich in cooperation with the University of Bremen and the German Amateur Radio Club (DARC).

“The beacon is still under test and will be shut down occasionally for more configuration and optimization of antennas and software, before it can be mounted at the final installation site in a few weeks,” said Rainer Englert, DF2NU.

The technology consists of a multiband WSPR receiver that can simultaneously monitor up to eight bands from 160 to 6 meters and feed several hundred receive reports per hour to WSPRnet. The 5-W multiband transmitter also had been commissioned and is working into a vertical antenna.

“After a few days in service, DP0GVN has received several thousand beacons spots already,” Englert reports.

In related news, DP0GVN will be the call sign for Matthias Maasch, DH5CW, starting in February, at Neumayer III Research Station for 1 year, and he plans to be active on HF. For the past year, he has been using DH5CW from the German Antarctic Base. QSL DP0GVN via DL5EBE. — Thanks to Tom Kamp, DF5JL, IARU Region 1 HF Committee Chairman via Rainer Englert, DF2NU, and The Daily DX

Source:ARRL

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Elecraft KX2 : Receive Tips and Tweaks January 01, 2017 No comments

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Demo of tuning the Radiuno BITX40 by W5KUB January 29, 2017 No comments

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Ailuance HD-1 Dual Band DMR HT Debut [ Video ] November 14, 2017 No comments

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Antenna Antenna Analyzers – ARRL The Doctor is In [Podcast] August 31, 2017 No comments

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Coil-loaded 40/80 Meter Inverted V Dipole Antenna by KG0ZZ September 11, 2015 No comments

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ELAD Products DUO-ART & SP1 [ Video ] October 06, 2017 No comments

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Department of Defense Interoperability Communication Exercise Deemed a Success

Thu, 01/18/2018 - 10:49am

A November 2017 Department of Defense (DoD)-sponsored communications interoperability exercise involving Amateur Radio was a success, according to information received recently from US Army Military Auxiliary Radio System (MARS) Program Manager Paul English, WD8DBY. The November 4-6 drill, which focused on interoperability between DOD elements including MARS, other federal agencies, and the Amateur Radio community, simulated a coronal mass ejection (CME) event. Army and Air Force MARS organizations worked in conjunction with the Amateur Radio community, primarily on the 60-meter interoperability channels as well as on HF NVIS frequencies and local VHF and UHF, non-Internet linked Amateur Radio repeaters.

“Amateur Radio support for these DOD interoperability exercises continues to grow,” English said.

The Amateur Radio portion of the exercise kicked off with a high-power information broadcast on 60-meter channel 1 (5,330.5 kHz) from a military station on the east coast and the Fort Huachuca HF gateway station in Arizona. The high-power broadcast provided basic exercise information and requested that amateur stations make contact with MARS stations on 60 meters and provide county-by-county status reports for the 3,143 US counties and county equivalents, in order to gain situational awareness and to determine the extent of impact of the scenario. Radio amateurs also were given the opportunity to submit a reception report and receive a QSL card.

New for this exercise, planners divided the continental US geographically and assigned each region to one 60-meter channel, in order to make more efficient use of all five channels. Planners roughly divided the US into northeast, southeast, northwest, southwest, and central regions. Also new for this exercise, military planners incorporated a day-time informational broadcast on a DOD frequency, 13,483.5 kHz USB. The purpose of that broadcast was to extend the exercise outreach during the day to the amateur community and to provide exercise updates.

English said that of the 738 broadcast reception reports received, 494, or 67%, of them were from the 60-meter broadcast while the remaining 244 reports were for the 13-MHz broadcast. The 60-meter broadcasts were received by stations in Canada, Spain, and Switzerland, and reception reports came from several members of the Short-Wave Listening (SWL) community.

Nearly 2,000 Amateur Radio stations took part in the exercise, submitting 3,025 county status reports, nearly 1,300 of them unique. QSL cards for amateurs and SWLs who participated in this exercise are being processed and will be mailed in January.

“Leaders from the supported DOD headquarters as well as the chiefs of both the Army and Air Force MARS programs appreciated the nearly 2,000 Amateur Radio stations that trained during this exercise,” English said. — Thanks to US Army MARS Program Manager Paul English, WD8DBY, and The ARRL ARES E-Letter

Source:ARRL

VHF New ! ICOM A120 VHF Air Band Transceiver January 05, 2016 No comments

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Kenwood TH-D74 – D-Star and Analog FM audio with EQ off / on 4K January 08, 2017 No comments

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Antenna Full Size Mega Loop Antenna 6 to 160m March 30, 2015 No comments

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Equipment Radioenge – RA-S1 – Antenna Rotator System May 16, 2015 No comments

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“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In”

Thu, 01/18/2018 - 10:44am


“Antenna Wire” is the topic of the latest (January 18) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-million downloads since its debut in April 2016 attest to the podcast’s popularity.

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.

Source:ARRL

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Interview VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios

Tue, 01/16/2018 - 2:36pm

Michael Walker, VA3MW, from Flex Radio talks to us about 4 new models of SDR HF Radios that are about to be released, and some cool new features they have

Rediscover radio with FlexRadio Systems. The leader in innovative software defined radio (SDR) solutions for ham operators worldwide. Founded in 2003, FlexRadio brings over ten years of experience in providing amateur radio operators with leading edge HF solutions.  Beginning with our FLEX Series and continuing with our current FLEX-6000 Signature Series family of HF/6m transceivers, FlexRadio Systems helps you rediscover your hobby by continually offering new and exciting capabilities to your rig that traditional radio manufacturers, or even other SDR solutions, can’t provide. And your radio is made and supported right here in the U.S.A. So come rediscover radio with FlexRadio Systems.

 

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A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m)

Tue, 01/16/2018 - 9:32am

An Excellent Dual Band Yagi for 70/144MHz on a 2.4m boom and single feed point

The 4-2-12 Dual Band Yagi has a total of 12 elements, 5 elements are used on 70MHz while 7 elements are used on 144MHz. The 4-2-12 InnovAntennas Dual Band Yagi stands aside from the crowd due to the methods used for it’s design. The 4-2-12 uses no traps or coils, no phasing arrangements and has no need for ‘compromise’ spacing between elements as the antenna has a set of correctly spaced elements for either band but still deploys only one feed point. An excellent antenna with great SWR bandwidth and performance in one package.

Performance

Gain on 70MHz: 9.78dBi @ 70.20MHz

F/B on 70MHz: 21.11dB @ 70.20MHz

Gain on 70MHz at 10m above Ground: 15.46dBi

Gain on 144MHz: 11.96dBi @ 144.300MHz

F/B on 144MHz: 19.02dB @ 144.300MHz

Gain on 144MHz at 10m above Ground: 17.82dBi

Power Rating: 3kw+

SWR 50MHz: Below 1:1.4 from 70.00MHz to 70.400MHz

SWR 70MHz: Below 1:1.5 from 144MHz to 144.800MHz

Boom Length: 2.4m

Weight: 6Kg / 12.2LB

Turning Radius: 2.396m

Wind Loading: 0.2 Square Metres

Wind Survival: 241KPH / 150MPH

 

Specification

This antenna is made with (10mm). 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 30mm square aluminum with 2mm wall thickness.

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

£199.95

http://www.innovantennas.com/

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A Note to Members from ARRL President Rick Roderick, K5UR

Mon, 01/15/2018 - 6:36pm

In the last few weeks, the ARRL’s Board of Directors has been the subject of an organized misinformation campaign. It is being orchestrated by a group of hams, some of whom are well-intentioned but have been misled. This effort, which consists of a series of mischaracterizations, initially dealt with (1) the ARRL Board’s censure of an ARRL Director, and (2) some proposed revisions to ARRL’s Articles of Association and Bylaws that are likely to be considered at the upcoming ARRL Board meeting and which were circulated by a member of the Board. None of the proposed Article and Bylaw changes has yet been addressed by the Board of Directors. More recently, other equally erroneous and false statements have been made with respect to completely unrelated issues, in an effort to draw into question ARRL’s decision-making processes. The principal suggestion is that ARRL operates under some “cloak of secrecy.” The criticism is unfair and undeserved.

ARRL’s representative system of governance, which has worked exceptionally well in the advocacy and promotion of Amateur Radio and the interests of ARRL members for more than 100 years, is unchanged. And the legislative and other advocacy positions currently being pursued are critical to the long-term survivability of the Amateur Radio Service.

The ARRL Board does seek thoughtful, informed input on policy issues concerning Amateur Radio from its roughly 150,000 members. ARRL’s governance structure provides that regionally elected, volunteer directors will represent the interests of the members in their respective Divisions, working collectively and collegially within our Board to make policy and to advocate their constituents’ interests. ARRL’s Board members hold cabinet meetings and forums at hamfests and conventions, and they staff ARRL booths at hamfests and conventions in order to find out what interests and concerns you have as ARRL members. They take this feedback from you, and they come to Board meetings twice a year to make policy for the organization. They work together collegially to develop the best policy decisions. This structure presumes that the Board’s collective wisdom is far greater than that of any one Board member, and each Board member is obligated by our Articles and Bylaws to come to meetings with a good idea of what the members need and what is best for Amateur Radio as a whole.

As is the case with most large, national non-profit associations, ARRL Board meetings are not open to the public. It has always been that way, as a matter of necessity. That is because, at all such meetings, confidential issues such as spectrum protection, employee compensation, financial information, and FCC submissions are candidly discussed, and the members’ interests at those meetings are advocated by the Directors on a representative basis.

Unfortunately, it was necessary for the Board to take the highly unusual action of publicly censuring one of its members recently. The Board heard the allegations made by an ARRL member of what transpired at an Amateur Radio event; it heard reports from other amateurs who were there, and it heard all the information that the Director involved chose to present. Everyone had a chance to speak and to evaluate the presentations. The Board, in an 11 to 3 vote with one abstention, took action to protect the organization’s integrity based on the information presented. This process and procedure are what nonprofit associations have to be prepared to employ, and do employ, to maintain order within their organizations and to ensure that the interests of the affected Director are protected as well. This is not a procedure that any nonprofit organization would conduct publicly.

The ARRL Policy on Board Governance and Conduct of Members of the Board of Directors and Vice Directors has been drawn into question, probably as the result of the fact that the Board’s censure decision was based upon a violation of that policy by the Director involved. The Policy is intended to protect the democratic decision-making processes by which ARRL has operated effectively for so long, and to set forth principles to guide an organization’s decision making and the behavior of individual board members when acting on behalf of ARRL. When it was adopted by the Board a year ago, it was posted for ARRL members to read. The policy calls for honesty, integrity, transparency, confidentiality, and equity. The purpose of adopting such a statement formally is to provide employees, volunteers, and board members with guidelines for making ethical choices and to ensure that there is accountability for those choices.

When board members of a nonprofit adopt a code of ethics, they are expressing their commitment to ethical behavior. It is intended to protect the Board’s deliberations and to protect the staff from inappropriate actions by Board members. It seeks to preclude precisely the type of selective disclosures and unilateral and subjective characterizations of proposed Board actions that have happened recently. There is nothing at all insidious about the policy, which is subject to regular review and modification, as are all other ARRL organizational documents.

As to the criticism of the proposed Articles and Bylaws changes, the Board has not yet considered them. It may or may not adopt some or all of the changes recommended by its Executive Committee or by an individual Director. Any responsible Board of Directors regularly reviews, amends and updates its Articlesand Bylaws. And ARRL member input is welcome on all such subjects. Indeed, the recommended Article and Bylaw changes were not considered to be Board confidential. The problem, however, is that it is not fair to members, or to the representative Directors who have yet to evaluate them collectively, to have the proposals mischaracterized or misrepresented.

ARRL Directors are volunteers. They are smart, dedicated radio amateurs who each devote thousands of hours per year of their own time to representing you as best they can.

To those who try to suggest that the Board has abandoned its obligation to the members in favor of the organization — you draw a distinction that doesn’t exist. The Board absolutely understands that the members are the organization. The members of ARRL are always best served by an informed Board that works together to make policy that is in the best interests of the organization. The divisive tactics that are being used now, commenced through disinformation and a lack of candor, are harmful not only to the organization, but to Amateur Radio operators everywhere, the good work of the ARRL staff, and the Service that we love so much.

Rick Roderick, K5UR, President

ARRL — the national association for Amateur Radio

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Mon, 01/15/2018 - 12:42pm

Right on schedule at 0359 UTC on January 12, the solid-fueled first stage and ground-lit strap-on boosters of the Indian Space Research Organisation (ISRO) Polar Satellite Launch Vehicle (PSLV) ignited and hurtled AMSAT-NA’s Fox-1D CubeSat along with 30 other satellites onboard the PSLV-C40 mission toward a sun-synchronous orbit. Less than 18 minutes later, the primary payload, a Cartosat-2 series imaging satellite for the Indian government, separated from the launcher’s fourth stage, followed by other satellites on the mission. By 27 minutes into the flight, confirmation came that all nanosatellites had been deployed. Fox-1D was in orbit!

Just before 0500 UTC, Fox-1D passed over western North America, but the onboard timer that ensures the satellite does not deploy antennas and begin transmitting until it’s clear of the launch vehicle and other satellites had not yet expired. “

“At about 0517 UTC, the satellite came to life and its antennas deployed over the North Pole,” AMSAT reported. “The AMSAT Engineering team and Amateur Radio operators worldwide were watching various WebSDRs for signs of life. Around 0525 UTC, the characteristic “Fox tail” of the Fox-1 FM transmitter was seen on multiple WebSDRs. Fox-1D was alive!” At 0528 UTC, the first frame appeared on the AMSAT telemetry server, uploaded by Anatoly Alexsandrov, UA9UIZ, and initial telemetry values confirmed that the satellite was healthy.

AMSAT-NA OSCAR Number Administrator Bill Tynan, W3XO, has designated Fox-1D as AMSAT OSCAR 92 or AO-92.

AMSAT Engineering reminds stations that the satellite will not be available for general use until the on-orbit checkouts are complete. AMSAT invites continued telemetry reports to assist the engineering team to complete commissioning.

“During commissioning, the transponder may be active at times, but please do not transmit as you may interfere with important tests that must be completed before the satellite is commissioned,” AMSAT said. “The commissioning process is expected to take up to 2 weeks.”

See the AMSAT-NA website for an update on AO-92 commissioning and payload testing. Additional updates may be posted this week.

In addition to a Fox-1 U/V FM transponder, Fox-1D will carry several university experiments, including a MEMS gyro from Pennsylvania State University-Erie, a camera from Virginia Tech, and the University of Iowa’s High Energy Radiation CubeSat Instrument (HERCI) radiation mapping experiment. Fox-1D also carries the AMSAT “L-Band Downshifter,” which gives the option of utilizing a 1.2 GHz uplink for the FM transponder. The Fox-1D downlink will be on 145.880 MHz, and uplinks will be on 435.350 and 1,267.350 MHz (67 Hz CTCSS), switchable.

The PSLV launcher also carried the French PicSat, which includes a V/U FM transponder. PicSat will perform space observations. The transponder uplink is 145.910 MHz, the downlink is 435.525 MHz. — Thanks to AMSAT News Service and Paul Stoetzer, N8HM

Source:ARRL

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FCC Cites Auto Dealership for Causing Harmful Interference to Cell Phone Site January 10, 2018 No comments

The FCC Enforcement Bureau called on a North Dakota auto dealership “to stop operating devices that are causing interference to licensed radio operati... Read more

Radio Amateurs Track Major East Coast Winter Storm January 10, 2018 No comments

WX1BOX, the Amateur Radio Station at the National Weather Service (NWS) office in Taunton, Massachusetts joined numerous SKYWARN nets across New Engla... Read more

NCVEC Releases New Technician License Question Pool into the Public Domain January 09, 2018 No comments

The National Conference of Volunteer Examiner Coordinators (NCVEC) has announced the release of the 2018-2022 Amateur Radio Element 2 Technician class... Read more

FEMA Region 10 Communication Exercises Will Make Use of 60 Meters January 09, 2018 No comments

Federal Emergency Management Agency (FEMA) Region 10 (Alaska, Idaho, Oregon, and Washington) will conduct a Communications Exercise (COMMEX) on Januar... Read more

Fox-1D Satellite Set to Launch this Week, China to Launch Five New CubeSats January 09, 2018 No comments

The launch from India of AMSAT-NA’s Fox-1D CubeSat will take place on January 12 (UTC). The Polar Satellite Launch Vehicle (PSLV) flight had to be res... Read more

SDRuno V1.22 has now been released

Sat, 01/13/2018 - 3:00pm
SDRuno Download 

This version contains the following changes and bug fixes…

Added
• Support for 1366×768 default layout
• ADC overload detection in AGC off mode
• ADC overload acknowledgment system to avoid lockout condition
• Custom step size for each mode
• Band Button Groups (Ham Lower, Ham Upper, Broadcast)
• Two additional SP1 width presets (2560 and 3840)
• Additional menu option in memory panel to reset column widths (helps when upgrading)
• Scheduled Recording
• Auto update

Changed
• Registry reset now only clears 1.2+ entries
• SP1 Window max size supports 4K displays (3840×2160)
• Small improvements to the memory panel (panel width and field width changes)
• Improvements to the IF output mode
• UTC time fixed to 24 hour format
• Play!/Stop button colour coordinated
• Move MUTE button to make way for VOLUME label
• Moved Squelch value display to the right

Fixed
• Log10 SING error
• Aero support detection to try to prevent rendering issues
• Freezing when switching to HiZ port in gain mode
• Gain “pumping” issue when in gain mode
• Settings panels not displaying properly when “un-minimised”
• Zoomed in frequency scale drag out of bounds bug
• Noise floor measurement bug
• Improved RSP error handling
• Sample rate change causing spectrum display issues
• Device selection bug

Known Issues
• SP2 CWAFC drift issue (Zoom/window size/freq display) – will be addressed in 1.23, workaround for now is to zoom out fully in the SP2 window and then the CWAFC feature will work.
• IF output mode disabled SP1 spectrum mouse clicks – temporary issue until LO is separated from the VFO (see plans below)

Following on from the 1.21 release where we outlined the features for coming releases, we have updated our plans, as shown below. The purpose of publishing this information is to give people an insight to the development plans but it is NOT a guarantee of the exact feature line-up and we cannot give release dates.

1.23 Intermediate update
• Recording of selected signal only (either I/Q or audio) to WAV file format
• Selected signal piped to VAC in I/Q format

1.3 Major update
• Separation of VFO and LO frequency control
• Frequency scanning

1.31 Intermediate update
• Remote client for network based streaming I/Q server applications

1.4 Major update
• Addition of new API for third party plugins

Download link: https://www.sdrplay.com/downloads

(adsbygoogle = window.adsbygoogle || []).push({}); VHF Baofeng UV9R Plus Waterproof – Dual Band FM VHF UHF December 18, 2017 No comments

Baofeng UV9R Plus Product parameters Frequency Range: VHF 136-174,UHF 400-520MHz Theoretical communication distance: 10 km Power: 15W Battery: Polymer... Read more

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Ham radio CubeSat launch success

Sat, 01/13/2018 - 12:46pm

CubeSats carrying amateur radio payloads were among the 31 satellites successfully launched on January 12 at 0359 UT on the ISRO PSLV-C40 mission from Satish Dhawan Space Centre in Sriharikota, India.

Two of the CubeSats, Fox-1D and PicSat, carry amateur radio FM transponders, but neither is yet available for general amateur use. The PicSat FM transponder is unusual in that instead of a CTCSS tone it requires a 1750 Hz tone burst to activate. The 1750 Hz tone burst used to be popular on IARU Region 1 FM repeaters in the 1980s and 90s before the widespread use of CTCSS.

CNUSail-1, built by students at the Chungnam National University in Korea, carries a deployable sail. The students have requested the help of radio amateurs in receiving the 437.100 MHz 9600 bps BPSK beacon, further information is available at https://sites.google.com/view/cnuusg

JE9PEL lists these frequencies for the satellites carrying amateur radio payloads:

Fox-1D (AO-92) 145.880 down 435.350/1267.350 up FM CTCSS 67.0Hz/200bps DUV PicSat   435.525 1200bps BPSK CNUSail-1     437.100 9600bps BPSK Canyval-X 1/2  437.200 9600bps MSK KAUSAT-5 437.465/2413.000 9600bps FSK,115k2 MSK STEP-1 437.485 9600bps FSK CW

Shankar A65CR/VU2SWG reported coping the Fox-1D satellite voice beacon on the morning pass at 30 deg elevation in Dubai using a TH-F7 with standard rubber duck. YL voice with satellite identifier. Very short burst with fluctuating carrier.

Madhu A65DE also copied Fox-1D from Fujairah, North of Dubai.

AMSAT North America has issued a statement formally designating Fox-1D as AO-92:

Fox-1D, a 1U CubeSat, is the third of AMSAT’s five Fox-1 CubeSats to reach orbit, being preceded by AO-85 (Fox-1A) and AO-91 (RadFxSat / Fox-1B). Fox-1D carries the Fox-1 U/v FM transponder, with an uplink of 435.350 MHz (67.0 Hz CTCSS) and a downlink of 145.880 MHz. In addition, Fox-1D carries several university experiments, including a MEMS gyro from Pennsylvania State University – Erie, a camera from Virginia Tech, and the University of Iowa’s HERCI (High Energy Radiation CubeSat Instrument) radiation mapping experiment. Fox-1D also carries the AMSAT L-Band Downshifter experiment which enables the FM transponder to be switched to utilize an uplink of 1267.350 MHz (67.0 Hz CTCSS).

Fox-1D was sent aloft as a secondary payload on the Indian Space Research Organisation (ISRO)’s PSLV-XL rocket as part of the PSLV-C40 mission. Fox-1D was one of thirty-one satellites successfully deployed on this launch.

Since Fox-1D has met all of the qualifications necessary to receive an OSCAR number, I, by the authority vested in me by the AMSAT President, do hereby confer on this satellite the designation AMSAT-OSCAR 92 or AO-92. I join amateur radio operators in the U.S. and around the world in wishing AO-92 a long and successful life in both its amateur and scientific missions.

I, along with the rest of the amateur community, congratulate all of the volunteers who worked so diligently to construct, test and prepare for launch the newest amateur radio satellite.

William A. (Bill) Tynan, W3XO
AMSAT-NA OSCAR Number Administrator

Further information on the Fox-1D launch, deployment and designation at
https://www.amsat.org/fox-1d-launched-designated-amsat-oscar-92/

Information on PicSat is available via
https://amsat-uk.org/2018/01/10/picsat/

Report on the five Korean satellites that were launched
http://koreabizwire.com/cube-satellites-built-by-university-students-launched-into-outer-space/107445

N2YO online real-time satellite tracking http://www.n2yo.com/

AMSAT-NA online orbital predictions http://www.amsat.org/track/

Keplerian Two Line Elements (TLEs) ‘Keps’ for new satellites launched in past 30 days
http://celestrak.com/NORAD/elements/tle-new.txt

Source:ARRL

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