{"product_id":"500pf-variable-capacitor-air-spaced-with-wires-and-control-knob-for-crystal-sets-or-loop-antenna","title":"500pF Variable Capacitor Air Spaced with Wires and Control Knob For Crystal Sets Or Loop Antenna","description":"This is one item of used air spaced variable capacitor recovered from a 1960's transistor radio with a total maximum capacitance of 550pF. It is a dual capacitor with two sections of 190pF and 360pF connected together. The total minimum capacitance is approximately 25pF. The knob is provided, and the wiring may make it easier to connect into your crystal set, tuned receiving loop antenna, or other radio project.\u003cbr\u003e\u003cbr\u003eHere are some example projects where you could use such a part:\u003cbr\u003e\u003cbr\u003eCrystal Set One\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/loud_crystal_set_radio\/loud_crystal_set_radio.htm\u003cbr\u003e\u003cbr\u003eCrystal Set Two\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/crystal_radio_v2\/crystal_set_radio_v2.htm\u003cbr\u003e\u003cbr\u003eChoccy Block Crystal Set Radio Kit\u003cbr\u003ehttps:\/\/www.usefulcomponents.com\/main_contents\/projects\/choccy_block_crystal_radio\/choccy_block_crystal_radio.html\u003cbr\u003e\u003cbr\u003eTuned Loop Aerial\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/am_radio_loop_aerial_booster\/mw_lw_am_loop_aerial_antenna.htm\u003cbr\u003e\u003cbr\u003eSuperheterodyne MW AM Radio\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/mediumwave_radio\/mediumwave_radio.htm\u003cbr\u003e\u003cbr\u003eThe Ladybird Book \"Learnabout... Making a Transistor Radio.\" Radio\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/ladybird_radio\/ladybird_radio.htm\u003cbr\u003e\u003cbr\u003eBreadboard Six Transistor MW AM Radio Kit\u003cbr\u003ehttps:\/\/www.usefulcomponents.com\/main_contents\/projects\/breadboard_trf_radio\/breadboard_trf_radio.html\u003cbr\u003eThe vast majority of small items will not usually attract any more postage charges. Please use the shopping cart and checkout everything altogether with any available promotion codes for the best deal.","brand":"HJW Electronics","offers":[{"title":"Default Title","offer_id":58501261689216,"sku":null,"price":14.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/il_fullxfull.6085572604_kuck.webp?v=1785180470","url":"https:\/\/shop.usefulcomponents.com\/products\/500pf-variable-capacitor-air-spaced-with-wires-and-control-knob-for-crystal-sets-or-loop-antenna","provider":"HJW Electronics","version":"1.0","type":"link"}