{"product_id":"1-tested-zenith-6cy7-tube-date-code-9-39-dual-triode-tube-sylvania-eia","title":"(1) Tested Zenith 6CY7 Tube Date Code 9-39 Dual Triode Tube Sylvania EIA","description":"\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan\u003e(1) Tested\u003c\/span\u003e\u003cspan\u003e Zenith 6CY7 \u003c\/span\u003e\u003cspan\u003eTube\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eDate Code 9-39.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eThe 312 EIA code indicates that this tube was made by \u003ci\u003eSylvania\u003c\/i\u003e for Zenith.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eThe wording is partially worn but still legible.\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\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eGm Test = 725-3650 micromhos\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMinimum pass\/good = 440-2500\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e~ Please view all 4 photos ~\u003c\/b\u003e\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":47626431201535,"sku":null,"price":8.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/s-l1600-41_9c427a35-3c5e-4196-838d-f71231f409fd.webp?v=1764911316","url":"https:\/\/classiccurrents.com\/products\/1-tested-zenith-6cy7-tube-date-code-9-39-dual-triode-tube-sylvania-eia","provider":"Classic Currents","version":"1.0","type":"link"}