"Rich Carter" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- I'll have to confess that my experience with tubes is limited. By the time I studied electronics, tubes were no longer covered. I've restored a few old receivers mostly by tube substitution. I appreciate some pointers from those more knowledgeable.
I have a Precision 612 tube tester, and I've used it to test some tubes. Most of the TR-3 tubes used are not shown on the scroll list for the tester. In particular, the 12JB6 PA tubes are not listed. Thought I realize that the best place to test tubes is in the actual circuit, I think there are still uses for tube testing. I thought I might be able to use it to match the PA tubes. A search on the internet doesn't find settings for the missing tubes. Does anyone know how to determine tester settings for unlisted tubes? Does anyone have a tube substitution list for Drake tubes? I saw such a list for Swan rigs, but I've not found one for Drakes. If I could find substitutes numbers for missing tube settings, I might find settings listed for an equivalent tube. Also, some of the tubes used in the transceiver have almost the same number as listed tubes in the scroll list, but have an A on the end. As an example, no 12BY7A has settings listed, but a 12BY7 is listed. The same is true for the 6AU6A. Does anyone know what the A suffix means? Thanks in advance Rich KE1EV ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
