{"product_id":"1920s-set-of-six-mcmichael-hesketh-mh-barrel-type-hf-transformers","title":"1920s Set of Six McMichael Hesketh MH Barrel Type HF Transformers","description":"\u003ch1\u003e1920s Set of Six McMichael Hesketh MH Barrel Type HF Transformers\u003c\/h1\u003e\n\u003cp\u003eThis is a 1920s Set of Six McMichael Hesketh MH Barrel Type HF Transformers. \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThey come with their original leather covered box with faux silk and velvet lining, which is in fairly good condition with a few tears, scuffs and surface blemishes.\u003c\/p\u003e\n\u003cp\u003eThe six McMichael transformers cover the range 80-7000 metres and are in excellent condition.\u003c\/p\u003e\n\u003cp\u003eEach transformer is marked:- \u003c\/p\u003e\n\u003cp\u003eRd DSN no. 705426 (dates to 1924)\u003c\/p\u003e\n\u003cp\u003e0.0003 µF across Primary\u003c\/p\u003e\n\u003cp\u003eRange of Each Transformer (Metres)\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e80-150\u003c\/li\u003e\n\u003cli\u003e150-300\u003c\/li\u003e\n\u003cli\u003e300-600\u003c\/li\u003e\n\u003cli\u003e550-1200\u003c\/li\u003e\n\u003cli\u003e1100-3000\u003c\/li\u003e\n\u003cli\u003e2500-7000\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eTwo small leaflets are included; the one on 'Neutrodyning' refers you to page 326 of the \u003cem\u003eWireless Constructor- \u003c\/em\u003eFeb 1925!\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eL McMichael Ltd were Radio Engineers based at Hasting House, Norfolk St, Strand WC.\u003c\/li\u003e\n\u003cli\u003eB Hesketh Ltd were Scientific Instrument Makers in Slough, UK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eIn 1922 the two companies merged and adopted the trade-mark \u003c\/span\u003e\u003ci\u003eMH\u003c\/i\u003e\u003cspan\u003e (McMichael Hesketh).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-domestic-military-amateur-radios-and-radio-equipment\" target=\"_blank\" rel=\"noopener noreferrer\"\u003evintage radio equipment\u003c\/a\u003e.\u003c\/p\u003e","brand":"MH McMichael\/Hesketh","offers":[{"title":"Default Title","offer_id":43607409361153,"sku":"","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/products\/DSC05394_1_e34eb636-daa8-4806-a7d3-f99f292bc36d.jpg?v=1669300244","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/1920s-set-of-six-mcmichael-hesketh-mh-barrel-type-hf-transformers","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}