New 2200-Meter Beacon on the Air from Australia

The Caboolture Radio Club (VK4QD) in Queensland, Australia, is now operating a beacon on 2200 meters on 137.444 kHz using the call sign VK4RBC. Australia’s telecommunications authority ACMA has granted permission for the continuous operation of the beacon, using WSPR2 (6H00F1D), plus a CW identifier. The power is 1 W EIRP into a 500-meter (1,640-foot) wire at a maximum of 40 meters (131 feet).

With WH2XND also reliable, we will now see exactly how good the path from USA to VK really is on 2200 meters.
— Caboolture Radio Club President Roger Crofts, VK4YB

Located in grid square QG62lw, the VK4RBC beacon also receives, which is unusual for a beacon, and it has copied signals from WH2XND (operated by Ron Douglass, NI7J) in Arizona. In the gaps between transmissions, it will report all WSPR decodes to WSPRnet.

Equipment is an Icom IC-718 transceiver and Monitor Sensors TVTR2 2200-meter transverter running 50 W TPO. This is the first Australian beacon that has been granted permission to operate below 28 MHz.


China’s new antenna is five times the size of New York City

China has built a giant experimental radio antenna on a piece of land almost five times the size of New York City, according to researchers involved in the highly controversial project.

The Wireless Electromagnetic Method (WEM) project took 13 years to build but researchers said that it was finally ready to emit extremely low frequency radio waves, also known as ELF waves. Those waves have been linked to cancer by the World Health Organisation-affiliated International Agency for Research on Cancer.

Although the project has civilian applications – officially it will be used for earthquake and mineral detection and forms part of China’s 11th five-year plan – it could also play a crucial role in military communications.

Scientists said that its transmissions could be picked up by a submarine lurking hundreds of metres under the sea, thus reducing the vessel’s risk of having to resurface to receive transmissions.

The project follows the construction of China’s first military-grade Super Low Frequency transmission station in 2009.

The next year, a Chinese nuclear submarine successfully communicated with the station from deep water – making China the third country in the world to have established such a submarine communication system, after the United States and Russia.

But the Chinese navy is eager to expand its capacity and has been pouring resources into the more advanced ELF radio technology, which allows submarines to communicate with the command centre from a greater depth and is harder to disrupt.

The Chinese government, however, has played down the importance of the facility, which occupies some 3,700 sq km (1,400 square miles) of land, in information released to the public.

Apart from the need to protect an important strategic asset, some researchers said that the secrecy was to avoid causing public alarm

Media Story - https://www.scmp.com/news/china/science/article/2180071/chinas-new-antenna-five-times-size-new-york-city-it-also-cancer

Galway VHF Group Digital Projects to go Live

Following rigorous bench testing, the Galway VHF Group Digital Projects will be going live from their new site on the Western side of Galway City this weekend (3/4 November 2018).

The 70cm DMR repeater, EI7RHD, operates on 439.450 MHz O/P and 430.450 MHz I/P with a power output of 30 watts into a 9db Gain Colinear antenna.

The Multimode Digital Gateway, EI2GCD, will initially run DMR and Yaesu Fusion on 144.850 MHz running 20 watts into a dipole antenna. There are facilities to add more digital modes such as D-Star and P25 should the need arise.

The Galway Wires-X gateway, EI2SHD, operates on 144.8125 MHz and is operational from the Salthill area running 20 watts. This will facilitate experimentation with Wires-X networking in conjunction with the Galway Fusion Repeater EI2TBR.

Galway VHF Group - http://galwayvhfgroup.blogspot.com/