550pF X2 Variable Capacitor Dual Gang Air Spaced for Crystal Sets, Radio Projects, and Loop Antennas
$20.47
This is one item of used, dual gang air spaced variable capacitor recovered from a 1960's valve radio. It was a triple gang, but the middle stator section is missing. Each section has a maximum capacitance of 550pF and a minimum of 15pF. The turning shaft is 9.6mm diameter and 55mm long.
Here are some example projects where you could use such a part:
Crystal Set One
https://www.interestingelectronics.com/old/henrys_interesting_electronics/loud_crystal_set_radio/loud_crystal_set_radio.htm
Crystal Set Two
https://www.interestingelectronics.com/old/henrys_interesting_electronics/crystal_radio_v2/crystal_set_radio_v2.htm
Choccy Block Crystal Set Radio Kit
https://www.usefulcomponents.com/main_contents/projects/choccy_block_crystal_radio/choccy_block_crystal_radio.html
Tuned Loop Aerial
https://www.interestingelectronics.com/old/henrys_interesting_electronics/am_radio_loop_aerial_booster/mw_lw_am_loop_aerial_antenna.htm
Superheterodyne MW AM Radio
https://www.interestingelectronics.com/old/henrys_interesting_electronics/mediumwave_radio/mediumwave_radio.htm
The Ladybird Book "Learnabout... Making a Transistor Radio." Radio
https://www.interestingelectronics.com/old/henrys_interesting_electronics/ladybird_radio/ladybird_radio.htm
Breadboard Six Transistor MW AM Radio Kit
https://www.usefulcomponents.com/main_contents/projects/breadboard_trf_radio/breadboard_trf_radio.html
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