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Old 08-26-2015, 10:55 AM
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Zenith26kc20 Zenith26kc20 is offline
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Join Date: Apr 2009
Location: New Orleans
Posts: 847
I can't remember if I posted this info here but here it is again. RCA developed a fast warm up 6cg7 for their color and black and white tv's. It is a clear top tube, getters on the side. They are designed to warm up in 11 seconds, making sure horizontal drive and sync are waiting when the output tube starts conducting. The wrong type can result in a jump in cathode current at turn on or horizontal lines until the 6CG7 warms up. They are also very reliable but are getting a bit pricey because of audiophiles. It is very important to use this tube.
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