The manufacture of thermionic (radio) valves part 1

During the European Triode Festival 2006 (ETF06) the 100th anniversary of the Triode was celebrated. To honor this Triode Centennial, a copy of the DeForest Audion (the first triode) was made. This video documents the making of the ETF06 Triode.

The Russian R161 radio station - Movie by G4PYM - full version

The Ham Band is Andrew (G3WZZ/OZ1XJ/OZ5E) and his wife Lissa and a group of Nashville session musicians. All the songs are about amateur radio and the booklet which comes with the "Seek You" CD tells the whole story of contests, dx-peditions, antennas etc.

Telephone and telegraph from the Your Life work series - 1946 - Vocational Guidance Films, Inc.

1921-era spark gap transmitter - Movie from KB8WFH about his transmitter used by W8AGA

Using Winrad we look at the activity corner of the display. The Softrock v6.1 is on 40m an MT63 or another multitone mode is on the left 4 PSK31 contacts on the right take up less space.

Rocky software decoding BPSK31 on 40m from Sofrock TX/RX v6.1. Improved video quality.

Schematic of the 4 tube radio, experimentally built in a way of the radio-pioneers (1910-1945). The radio acts as a cascade type receiver when the antenna coil has a high self-inductance, with lower self-inductances of the antenna coil you can put in a mixing process with the oscillator. Perhaps...

SAQ - 17kHz2 using the 200KW Alexanderson station, the only radio station on the world heritage list. Swedish TV