Bernie, That's my take on this too! At least from past experience.
I'm just puzzled by the occurrence. I doubt that there is 25 hours of actual plate power applied, I.E., key down. I don't make the "old buzzard" routine talks. I've always been in a round table, most being technical in nature regarding AM ops., equipment, and such. I wonder if maybe these old tubes are at the point where a muffin fan or two ought to be added to the Old Gals. Bob - N0DGN Bernie Doran wrote: > The milky white appears when the tube has lost its vacuum and fil power is > applied, I have seen this vapor of death more than a few times when testing > old fellows. This is not to say that this is the only reason for the white > deposits, but it is the only way I have seen it form. Bernie W8RPW > ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
