[Elecraft] K3 intermittent receive issue

Pfizenmayer pfizenmayer at q.com
Mon Apr 21 15:08:55 EDT 2014


Chris -

The power on -off cycle "cure" does not tally with the below but its worth a 
try .

Having just put a KAT3 in my K3 this weekend to replace the KANT3 - from 
what you describe - take the top cover off  - and if you have the KAT3 
tuner - check the two pigtails from the SO239's to the board - make sure 
both are plugged in , or not broken at the connector . If its a no tuner 
KANT3 - there is just one pigtail. If those are Ok  , In either case gently 
wiggle the board a bit and see if the sigs re-appear like they do with 
tapping the top.(You may have to loosen the standoff at the upper rear side 
of the board.)  Look carefully at the connector between the board and the 
main RF board at the bottom front of the board. Make sure all pins  made it 
into the socket.

Guess it might also  be worthwhile to follow the  manual instructions 
for"enable" of the KAT3 in the Config menu ( be sure to turn off the K3 for 
5 - 10 seconds after the reset and let it re-find /test the device. Maybe 
just try that first . (page 47 of my mid 2013 manual )

Good l.uck.

73 Hank K7HP


----- Original Message ----- 
From: "Chris G7DDN" <g7ddn at g7ddn.com>
To: <elecraft at mailman.qth.net>
Sent: Monday, April 21, 2014 8:52 AM
Subject: [Elecraft] K3 intermittent receive issue


> Hi friends
>
> I seem to have some issues with my K3 on receive.
>
> It presents as a seemingly complete loss of either RF or IF gain - The S 
> meter goes dead and there are no signals audible or visible on the S 
> meter.
>
> After a few seconds usually, everything comes back. Turning the radio off 
> and on again nearly always cures it.
>
> Happens on all HF bands - doesn't seem related to relays - seems to 
> respond well to the standard "gentle tap on the top panel" (on the RH side 
> as you look at the front panel)
>
> It doesn't seem to be related to anything I am doing as I operate.
>
> Any thoughts?
>
> Regards
>
>
>
>
> Chris G7DDN
> Sent from my iPad Air
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