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

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

Best viewed in high quality. Burt, K1OIK reviews the Flex 5000A Software Defined amateur radio.

With a little practice, it's easy to put the Buddipole Antenna back into the same carrying bag it came out of!

Operating my station remotely. I use three pieces of software. First is TRX-Manager to control the radio. See my video on TRX-Manager. Second, remote desktop software. This allows me to control the radio computer from a remote computer. I use Logmein.com free program to manage and setup the...

The Fresno Amateur Radio Club 2008 Field Day held at Pineridge School in Pineridge California, elevation 4843 feet. This is the raising of a portable 75 foot tower.

Experimental receiver for VLF. I received electromagnetic (radio) signals between 14 and 22 KHz with a capacitor of 4,7 NF over the showed coil. The schematic is identical to that of the storm detector IV (with the 6088 Tube), the coil is differently constructed. There is one more transistor...

Radio Kootwijk - PCG, the Dutch radio connection between the Netherlands and the Dutch East-Indies

Serving Sweden and Denmark from 1962 until 1966 with pirate radio, first from M/v CHEETA I and later from CHEETA II