{"product_id":"1970s-nos-military-morse-coder-mx4495-and-tape-1136-gra71-for-an-electromechanical-burst-encoder","title":"1970s NOS Military Morse Dot Dash Coder MX4495 For A GRA71 Electromechanical Burst Encoder","description":"\u003ch1\u003e1970s NOS Military Morse Dot Dash Coder MX4495 For A GRA71 Electromechanical Burst Encoder\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThis is a 1970s NOS Military Morse Dot Dash Coder MX4495 For A GRA71 Electromechanical Burst Encoder, which forms part of covert surveillance (spying) radio communication history.\u003c\/p\u003e\n\u003cp\u003eIt is in very good unused condition but I don't know whether or not it is working, and is being sold as a collectible for display only.\u003c\/p\u003e\n\u003cp\u003eThis small device\u003cspan data-mce-fragment=\"1\"\u003e was supplied as an alternative to the heavier MX-4496 alphabet coder. It comprises three buttons: for creating Morse dots, dashes and spaces without an external power source. The morse code is then stored on tape, \u003ca href=\"https:\/\/mullardantiques.co.uk\/products\/copy-of-1960s-military-morse-magazine-recording-tape-ma9-gra71-for-an-electromechanical-burst-encoder\" target=\"_blank\"\u003eMA-9 cartridge\u003c\/a\u003e, before transmitting using the \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/all\/products\/1960s-morse-high-speed-military-keyer-ky468-gra71-an-electromechanical-burst-encoder-morse-key\" data-mce-fragment=\"1\" target=\"_blank\" data-mce-href=\"https:\/\/mullardantiques.co.uk\/collections\/all\/products\/1960s-morse-high-speed-military-keyer-ky468-gra71-an-electromechanical-burst-encoder-morse-key\"\u003e'keyer\u003c\/a\u003e,' both of which are also available to purchase. \u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eManufactured by Arvin Industries Inc., serial no. 1136\u003c\/p\u003e\n\u003cp\u003eThis is the military version of the magazine in a black box; the whole set was designated GRA71. It was used with USA army radios and CIA spy radio sets such as the AN\/PRC-64A and RS-1 (AN\/GRC-109).\u003c\/p\u003e\n\u003cp\u003eA very rare item and often missing from the GRA71 burst coder spy set.\u003c\/p\u003e\n\u003cp\u003eThe Electromechanical Burst Encoder was invented by \u003cspan data-mce-fragment=\"1\"\u003eStenographic Machines in Skokie, Illinois, USA, for the CIA (\u003cstrong\u003eC\u003c\/strong\u003eentral\u003cstrong\u003e I\u003c\/strong\u003entelligence \u003cstrong\u003eA\u003c\/strong\u003egency). It allowed pre-recorded messages to be sent, in morse code, at very high speeds. This was an essential requirement ensuring that the operator was on air for the minimum time possible to prevent detection by RDF (\u003cstrong\u003eR\u003c\/strong\u003eadio\u003cstrong\u003e D\u003c\/strong\u003eetection\u003cstrong\u003e F\u003c\/strong\u003einding).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-military-radio-equipment\" target=\"_blank\"\u003eradio communication accessories\u003c\/a\u003e and \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/militaria\" target=\"_blank\"\u003eMilitaria\u003c\/a\u003e.\u003c\/p\u003e","brand":"Arvin Industries Inc","offers":[{"title":"Default Title","offer_id":42463510429953,"sku":"","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/products\/DSC03710_46b1bea4-79f4-475c-b25e-7dad681bb00f.jpg?v=1644590817","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/1970s-nos-military-morse-coder-mx4495-and-tape-1136-gra71-for-an-electromechanical-burst-encoder","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}