[EMAIL PROTECTED] made an utterance to the drakelist gang ----------------------------------------------------------------------
hi, I got my early xmas presents yesterday, an R-4 and T-4 reciter (I think the T-4 serial is 106 or something low like that). The 6JB6 tubes were pretty soft - around 70 watts when gain cranked fully CW on 40 meters. The long story made short is I pulled the old 6JB6 tubes out and replaced them with what appear to be new sylvania. I don't think they're "matched" because the design of the plate is slightly different. They're both 6JB6 Sylvania but look a little different inside. I followed the procedure in the manual to neutralize them at 28.8mc with a nice bird dummy load. I got them neutralized fairly quickly with max output at the bottom of the dip on 10 meters. I don't remember exactly what the final power out was, but I think it was around 90 watts. Now the meat and potatoes of the question - on 40 meters the bottom of the dip is not max output - the bottom of the dip is about 5 to 10 watts less than max output. Did I make a mistake? I never run 10 meters so optimized operation on 10 meters isn't doing me any good. The 10 watts that I'm losing by running at the bottom of the dip on 40 meters doesn't bother me either - I just wonder if I missed a step or if this is typical behavior? Thanks! -- 73 Jason N1SU http://n1su.com/ ---------------------------------------------------------------------- Submissions: drakelist@www.zerobeat.net 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 ----------------------------------------------------------------------
