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Kenwood TH-D74
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LDMOS HF amplifier 90W input 2400W CW SSB output 1.8-54 MHz This a ready power amplifier. You will need a case and power supply only! Water-cooled hermetically. You can turn the power amplifier. The water will not flow. The power supply m... Read more
Storm Emergency Traffic IARU HF Championship Contesters: The Hurricane Watch Net (HWN) is active on 14.325 MHz and 7.268 MHz in response to Category 1 Hurricane Barry. WX4NHC at the National Hurricane Center has activated and plans to operate through landfall on Saturday. In addition, the Maritime Mobile Net is expected to be active on 14.300 MHz. […] Read more
Language in the Federal Aviation Administration (FAA) Reauthorization Act of 2018 will exclude all but a small number of Amateur Radio towers from marking requirements. Thanks to action taken in 2017 and 2018 by ARRL, the bill’s original language was amended to the extent that amateur towers, as well as residential towers used for over-the-air TV reception, […] Read more
Responding to Tropical Storm Barry, the Hurricane Watch Net (HWN) and WX4NHC— the Amateur Radio station at the National Hurricane Center (NHC) in Miami — have announced plans to activate. The HWN will activate today (July 12) at 2300 UTC on both 14.325 MHz and 7.268 MHz. “We will operate on 14.325 for as long as […] Read more
Hurricane Watch Net (HWN) Manager Bobby Graves, KB5HAV, said the net is “keeping a very close eye” on Tropical Storm Barry, which could develop into a Category 1 hurricane. The HWN has announced no plans to activate, however, and remains at Alert Level 2 — monitoring mode. At 2100 UTC, the storm’s center was 90 miles […] Read more
International Amateur Radio Union (IARU) President Tim Ellam, VE6SH/G4HUA, said his organization empathizes with the concerns of radio amateurs worldwide regarding a French proposal to allocate 144 – 146 MHz to the Aeronautical Service on a primary basis, essentially sharing it with Amateur Radio. The band is currently allocated to Amateur Radio on a primary […] Read more
Another Amateur Radio satellite is set to launch from China. CAMSAT CEO Alan Kung, BA1DU, reports that CAS-7B (BP-1B) is expected to launch on July 22 at 0500 UTC, on the Hyperbola 1 vehicle. CAS-7B is a spherical spacecraft, 500 millimeters (approximately 19.7 inches) in diameter with a mass of 3 kilograms (about 6.6 pounds). […] Read more
After due consideration, and as reported in GB2RS news on Friday 5 July, RSGB President Dave Wilson, M0OBW wrote to Ofcom strongly expressing the RSGB’s concerns about the proposed WRC-23 aeronautical Agenda Item that includes 144-146 MHz. The President’s letter started by stating that the RSGB ‘shares the concerns of the global amateur community and views the […] Read more
British Columbia radio amateur Alex Schwarz, VE7DXW, said that an Independence Day magnitude 6.4 earthquake in California’s Mojave Desert and multiple aftershocks negatively affected HF propagation on the US west coast. Schwarz, who maintains the “RF Seismograph” and has drawn a correlation between earthquake activity and HF band conditions, said the radio disruption began at around […] Read more
International Amateur Radio Union Region 1 (IARU R1) reports that a further meeting to address the topic of Wireless Power Transmission (WPT) took place last week. A subgroup of the European Conference of Postal and Telecommunications Administrations (CEPT) Committee SE24, which charged with work on a report on generic WPT devices, met in Copenhagen, Denmark. […] Read more
The TX Factor show visits the National Radio Centre at Bletchley Park where Noel Matthews G8GTZand Graham Shirville G3VZV demonstrate how to set up and operate using the amateur radio transponders on the new geostationary satellite Qatar-Oscar-100 (QO-100). Plus, Bob McCreadie G0FGX visits the folks at Icom UK with a full review of Icom’s long-awaited VHF / UHF all-mode transceiver the IC-9700. Watch TX […] Read more
In our next step in an ongoing effort to protect the 144MHz band, the RSGB President has written to Ofcom regarding the recent World Radio Conference WRC-23 aeronautical proposal. Our input summarises the basis for our deep concerns, but also includes an appendix highlighting the multi-faceted nature of amateur radio activity and innovation in this strategically important […] Read more
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Cathryn Mitchell, M0IBG, the academic director of the University of Bath Doctoral College in the UK, has received the 2019 Edward Appleton Medal and Prize for her pioneering research in tomography and data assimilation that revealed a completely new perspective on the ionosphere in response to extreme space weather. “Mitchell innovated a completely new Earth […] Read more
Radio Amateurs of Canada has received several requests for more information in response to reports on some websites and discussions on email lists of a proposal to reallocate 144 MHz -146MHz from the Amateur Radio Service to the Aeronautical Mobile Service. The following has been prepared by Bryan Rawlings VE3QN RAC’s representative at the World Radio Conference and the domestic and […] Read more