Open source reflow oven, shutting down analog FM, SSTV in 1973, more...
Issue 57 April 18th, 2015
Navy once wanted the world's largest antenna in Wisconsin
In the 1960s, US Navy officials concocted an ambitious plan: they wanted to bury a gigantic grid of cables under roughly 41 percent of the state of Wisconsin in order to turn its bedrock into the world's largest radio antenna. Vox
Using WebSDRs worldwide for the ISS
Martin Ehrenfried G8JNJ describes how he uses WebSDRs to listen to ISS transmissions on 145.800 and 145.825 MHz. The SUWS SDR at Farnham can even receive the 143.625 MHz ISS comms channel. AMSAT UK
Slow Scan TV in 1973
On a 1973 Israeli TV show, Aaron 4X1AG (ex 4Z4AG) demonstrated amateur radio Slow Scan Television (SSTV), which in the pre-PC era was displayed using a long persistence tube. Southgate