{"product_id":"550pf-x4-variable-capacitor-four-gang-air-spaced","title":"550pF X4 Variable Capacitor Four Gang Air Spaced","description":"\u003cp\u003eThis is one item of used, quad gang air spaced variable capacitor recovered from a 1960's valve radio. Each section has a maximum capacitance of 550pF and a minimum of 14pF.  The turning shaft is 0.25\" 6.3mm diameter and 10mm long.  The suitable knob is included.  The sections could be connected together to form a 2200pF variable for VLF tuning.\u003c\/p\u003e\n\u003cp\u003eHere are some example projects where you could use such a part:\u003c\/p\u003e\n\u003cp\u003eCrystal Set One\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/loud_crystal_set_radio\/loud_crystal_set_radio.htm\u003c\/p\u003e\n\u003cp\u003eCrystal Set Two\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/crystal_radio_v2\/crystal_set_radio_v2.htm\u003c\/p\u003e\n\u003cp\u003eChoccy Block Crystal Set Radio Kit\u003cbr\u003ehttps:\/\/www.usefulcomponents.com\/main_contents\/projects\/choccy_block_crystal_radio\/choccy_block_crystal_radio.html\u003c\/p\u003e\n\u003cp\u003eTuned Loop Aerial\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/am_radio_loop_aerial_booster\/mw_lw_am_loop_aerial_antenna.htm\u003c\/p\u003e\n\u003cp\u003eSuperheterodyne MW AM Radio\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/mediumwave_radio\/mediumwave_radio.htm\u003c\/p\u003e\n\u003cp\u003eThe Ladybird Book \"Learnabout... Making a Transistor Radio.\" Radio\u003cbr\u003ehttps:\/\/www.interestingelectronics.com\/old\/henrys_interesting_electronics\/ladybird_radio\/ladybird_radio.htm\u003c\/p\u003e\n\u003cp\u003eBreadboard Six Transistor MW AM Radio Kit\u003cbr\u003ehttps:\/\/www.usefulcomponents.com\/main_contents\/projects\/breadboard_trf_radio\/breadboard_trf_radio.html\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Default Title","offer_id":58589783589248,"sku":null,"price":21.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/il_fullxfull.7376933200_okk5.webp?v=1785424535","url":"https:\/\/shop.usefulcomponents.com\/products\/550pf-x4-variable-capacitor-four-gang-air-spaced","provider":"HJW Electronics","version":"1.0","type":"link"}