{"product_id":"1935-set-of-four-stc-radio-crystals-for-a-military-wireless-set-number-7-ws7","title":"1935 Set Of Four STC Radio Crystals For A Military Wireless Set Number 7 (WS7)","description":"\u003ch1\u003e1935 Set Of Four STC Radio Crystals For A Military Wireless Set Number 7 (WS7)\u003c\/h1\u003e\n\u003cp\u003eA vintage 1935 Set Of Four STC Radio Crystals For A Military Wireless Set Number 7 (WS7) made by ST\u0026amp;C limited (Standard Telephone \u0026amp; Cable).\u003c\/p\u003e\n\u003cp\u003eThe WS7 was \u003cmeta charset=\"utf-8\"\u003ea mobile crystal controlled transmitter \/ receiver mainly used for military tank communication. It had a range of 3-5 miles, and a frequency range of 1.875-5MHz. It was soon replaced by Wireless Set 9 (WS9).\u003c\/p\u003e\n\u003cp\u003eMade from brass and glass, these crystals have the following frequencies, which is etched on to the glass. They also have a second number, in parentheses below, etched on the brass base. The crystals have not been tested and are sold as a display item only.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3700 k\/cs (2146 \u003cmeta charset=\"utf-8\"\u003eis etched on the brass base)\u003c\/li\u003e\n\u003cli\u003e3600 k\/cs (3092)\u003c\/li\u003e\n\u003cli\u003e3580 k\/cs (2766)\u003c\/li\u003e\n\u003cli\u003e3460 k\/cs (4444) \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGreat piece of \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-military-radio-equipment\" target=\"_blank\"\u003eCommunication radio history\u003c\/a\u003e for your collection.\u003c\/p\u003e","brand":"STC Standard Telephone Cable","offers":[{"title":"Default Title","offer_id":57283976102263,"sku":null,"price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/files\/1935_Set_Of_Four_STC_Radio_Crystals_For_A_Military_Wireless_Set_Number_7_WS7.jpg?v=1744117892","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/1935-set-of-four-stc-radio-crystals-for-a-military-wireless-set-number-7-ws7","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}