[Elecraft] K1 bad drift on 20m
Hi folks, I am operating my K1 #1434 for more then 2 years now with a 2 band 40/20 and a 4 band module 40/30/20/17m. Recently I discovered an drift problem on 20 (only 20) on my 4 band module. (Blue trimmer caps inside). This problem occurs during RX and TX.First I thought the station I am just receiving has a poor stability but then all the stations on 20 sounded very bad.So I turned on my Icom 735 and listened to my own transmitting signal. The tone sounded really rough. I wonder if any one of you has ever mentioned this on just one band of the K1. I must add that my problem does not exist with the 2 band module and it seems after some 45 minutes after turning on the K1 this bad drifting disappears... Thanks very much for thinking about it! 73 de Tom, DL2HRF ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K1 bad drift on 20m
Tom wrote: Recently I discovered an drift problem on 20 (only 20) on my 4 band module. (Blue trimmer caps inside). This problem occurs during RX and TX. I must add that my problem does not exist with the 2 band module Tom, I've never heard a problem like this reported on the K1. About the only thing it can be is the 20m hetrodyne crystal (X2) circuit on the filter board. I'd re-heat the solder connections at X2 and at pin 5 of switching relay K2B on the filter board. When your unit is drifting, you can use another receiver to listen to the oscillation of X2 (within a few kHz of 22.000 MHz) to determine that the X2 circuit is the source of the drift. 73, Mike / KK5F ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
