Logging (sneaking) in from work, so excuse the lack of schematic (or the CD), as I'm working from memory...
Setting the RF and INJ trimmers seems to be a bit of a pain, in that I can't seem to get the transmit power out level to match what I get from the receiver. I have a good, factory INJ cable. In fact, I'd think that the transmit levels would be higher when the Xmitter is controlling the frequency. I'm pretty sure I checked the tubes, but before I go through that, is it normal for the levels to be quite different? I'm talking a differnce such that if I set the transmitter for 20W out in XMIT position, when I use RCVR, I'll have 50 - 60W. Receive signal strength is also lower when the transmitter controls. Weak premixer? When checking the last parts where you're aligning the filter match, CAR BAL, etc., I can't really get any increase from idle current in SSB just by keying the PTT. CAR BAL adjustment, as it's shown on P 16 of the original T-4X manual - which is done in CW mode - aligns just fine. I can see what amounts to milliwatts of output when adjusting C2. Is this normal? I don't see any significan output for me to try adjusting the transformers T2 & T3, so I've wisely left them alone. I'm thinking of working up a procedure that uses a scope and signal generator, as most of us have much better lab equipment nowadays than what was available to the typical ham in 1966. 73, Steve, W1ES/4 _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
