{"product_id":"1-tested-qrs-uv-01a-tube-red-bakelite-q-r-s-redtop-type-01a-tube-short-pins","title":"(1) Tested QRS UV 01A Tube Red Bakelite Q.R.S. Redtop Type 01A Tube Short Pins","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003e(1) Tested \u003cstrong\u003eVery Strong\u003c\/strong\u003e Q.R.S. Redtop 01A Tube (UV 01A).\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003eRed bakelite base with \u003c\/span\u003e\u003ci\u003eshort\u003c\/i\u003e\u003cspan\u003e (UV) brass pins.\u003c\/span\u003e\n\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\u003eThis tube tests well above NOS ratings.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eIn the mid to late 1920s Q.R.S., famously known for their piano rolls, produced \"Redtop\" detector\/amplifier tubes with \"double filaments, double plates and double grids...\" while boasting \u003cem\u003e\"Redtop Radio Tubes are Better\".\u003c\/em\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eThe original label is still intact with some minor color loss and the \"redtop\" has a good portion of color left.\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eThe red bakelite base has some small nibbling around the top rim from production.\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eThere are some areas of faint liquid-like staining on the glass that cannot be cleaned off - see photos.\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\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 = 825 micromhos\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMinimum pass\/good = 460\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eAverage NOS rating = 690\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 9 photos ~\u003c\/b\u003e\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":48412969664767,"sku":null,"price":78.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/IMG_2012_1be213ca-c7ec-4564-83a2-454e6ede27c3.jpg?v=1776727556","url":"https:\/\/classiccurrents.com\/products\/1-tested-qrs-uv-01a-tube-red-bakelite-q-r-s-redtop-type-01a-tube-short-pins","provider":"Classic Currents","version":"1.0","type":"link"}