{"product_id":"gec-fat-boy-kt66-vt75-air-ministry-production-10e-11533-grey-glass-black-base-electronic-tubes-high-wycombe-plant-wartime-production-copy","title":"GEC, FAT BOY KT66, VT75, AIR MINISTRY PRODUCTION, 10E\/11533,  GREY GLASS, BLACK BASE, SHAW PLANT,  PRE-1945 WARTIME PRODUCTION","description":"\u003cdiv class=\"variant-description\"\u003eGEC, FAT BOY KT66, VT75, AIR MINISTRY PRODUCTION, 10E\/11533,  GREY GLASS, BLACK BASE, SHAW PLANT,  PRE-1945 WARTIME PRODUCTION\u003c\/div\u003e\n\u003cdiv class=\"variant-description\"\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp class=\"variant-description\"\u003eTested using an Avo specification for 100% emission of anode current, Ia =63 mA; mutual conductance gm = 6.3 mA\/V @ At Va = 250V Vg = -15V the results obtained were:-\u003c\/p\u003e\n\u003cp class=\"variant-description\"\u003eIa = 100 mA. gm = 7.2 mA\/V. \u003c\/p\u003e\n\u003cdiv class=\"sku\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"OSRAM VALVE COMPANY","offers":[{"title":"Default Title","offer_id":46111245631624,"sku":"A169","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/5784\/files\/IMG_8026.jpg?v=1781423402","url":"https:\/\/mullard.org\/products\/gec-fat-boy-kt66-vt75-air-ministry-production-10e-11533-grey-glass-black-base-electronic-tubes-high-wycombe-plant-wartime-production-copy","provider":"MULLARD MAGIC","version":"1.0","type":"link"}