{"product_id":"tested-matched-balanced-pair-1947-western-electric-jw-5847-tubes-codes-713-752","title":"Tested Matched Balanced Pair 1947 Western Electric JW 5847 Tubes Codes 713 \u0026 752","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eTested \u003cstrong\u003eMatched and Bal\u003c\/strong\u003e\u003cstrong\u003eanced\u003c\/strong\u003e Pair of 1957 Western Electric JW 5847 Tubes (404A).\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eDate Codes 713 and 752 place the production of both to January - March of 1957 and October - December of 1957.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eTubes are matched for Gm testing (see below) and internal structure - they are identical.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eBlack plates with top square angled D getters.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cdiv\u003e\u003cspan\u003eTested on a calibrated Hickok TV-10 military tube tester\u003cb\u003e\u003c\/b\u003e with \u003cb\u003eno shorts\u003c\/b\u003e and \u003cb\u003eno leaks\u003c\/b\u003e with the following results:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eGm Test = 7250 and 7250 micromhos\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMinimum pass\/good = 4600\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e~ Please view all 5 photos ~\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cb\u003e\u003c\/b\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eGo\u003cb\u003e \u003ca href=\"https:\/\/classiccurrents.com\/collections\/western-electric-vacuum-tubes\" title=\"Western Electric Tubes\"\u003e\u003cstrong\u003eHERE\u003c\/strong\u003e\u003c\/a\u003e \u003c\/b\u003eto shop and explore all of our Western Electric tubes.\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":47622377046271,"sku":null,"price":54.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/s-l1600-46_9ae0b187-7794-4afe-bc1b-967a4b6b2f87.webp?v=1764793879","url":"https:\/\/classiccurrents.com\/products\/tested-matched-balanced-pair-1947-western-electric-jw-5847-tubes-codes-713-752","provider":"Classic Currents","version":"1.0","type":"link"}