After several weeks of faultless operation the low and unstable output power came back on 80m cw this morning. Following up a previous hunch I did the 50w TXG calibration and got the ERR TXG message...tried another couple of bands with same result.
I retuned higher up the band and retried - this time no error message. When I checked the TXGN HP constant however it had gone right up to well over 100 from the seeming usual value of around 35 and each time I pressed TUNE to repeat the calibration the value went up a bit more each time. Adjusting the filter offset value a small amount also appears to cause the ERR TXG to leave me in peace but can't remember what happened to the gain constant.
I sort of lost track of what I was doing but it's back to normal now with the txg constant back down to 32. Don't think it's anything do with synthesizer/vco as the receive is always normal. Might shift the 2.7kHz filter from position 2 to 1 just for grins as the archives turned up a report which said to use position 1 if you have only the one filter; I also have a 500 and 250 Hz filter but it's easy enough to do.....
73,
Stewart Rolfe, GW0ETF
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com
Locked
