Rick, In one way I am sorry to hear that you have a problem with occasional loss of RX after TX, however I am pleased that I am now not the only one to report this problem !
I was hoping that the new F/W releases would rid my K3 of this annoying phenomenon, but that did not happen... I have a sequence which I can use to reproduce the loss of RX, and you might like to try it. POWER 80m LSB 3780 NOR LO CUT=0.15 SAV ALT1 NOR TX ON/OFF ALT1 TX ON/OFF Receive may be dead at this point If not continue with Select USB ALT1 TX ON/OFF Receive dead Of course Y.M.M.V. 73 Stewart G3RXQ On Sun, 4 May 2008 20:51:52 -0700 (PDT), AI1V wrote: > > When running some CW contacts on 40m, I had the unpleasant experience of > having the rx go almost totally dead (very low noise level - no signals) > immediately after calling a station. Nothing seemed to recover it so I > power cycled the radio in time to hear the other station send ..--.. This > happened a couple more times. I hadn't notice this happening before. The > only new thing I had recently tried was the ALT1/ALT2 filter settings > (pretty cool feature). While it is somewhat unpredictable, the phenomenon > appears to be strongly correlated with the use of this feature. I have also > found that I can recover from the "dead rx" condition by tweaking the shift > or sometimes the width, but sometimes that doesn't work and I need to power > cycle. Since then I've stopped using ALT1/ALT2 and haven't had it recur. > Note: this problem appears in the new firmware as well as the last revision. > > On a possibly related note - I was running the hi and low power tx gain cal > procedure after updating the firmware. By mistake I spun the width knob > instead of the pwr knob to adjust the power. At some point the filter setup > got quite hosed - the width display showed around 4 khz, but the passband > display was at minimum width. The next time I tried keying (holding tune) I > got the nefarious ERR TXF message! I also noticed that the noise level on > the rx was way down (I was connected to a dummy load) from where it was > earlier. Power cycling the radio brought everything back to normal and I > completed the cal. > > It appears that something is whacking filter parameters in the DSP - or at > least that's what it's acting like. I've reported this to support at > elecraft. > > Nevertheless, the radio kicks butt. The mojo is alive and well - worked 18 > states this weekend including the west coast on 40CW loading my rain gutter > through an SGC tuner! > > Rick > AI1V > K3 728 _______________________________________________ Elecraft mailing list Post to: [email protected] 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
