As Don suggests, the problem can be anywhere in the antenna system, and
in my experience it is much more likely to be a connector than the K3.
I once had a similar problem that drove me nuts until I discovered a
corroded solder joint INSIDE an encapsulated balun.
A film of oxide on a poor connection can often be temporarily cleared
when you transmit (you are probably transmitting a little RF when you
just tap the PTT) but will fail to pass the tiny current from a received
signal.
There are various relays in the K3, but the t/r switching is performed
by diodes.
If you have a different antenna with a different feedline, then that can
provide a way to tell if it is the rig or the antenna system.
On 3/25/2014 6:40 PM, Jan wrote:
I am having a problem with T/R switching in my K3. The symptom is that,
after I transmit, the receive signals are sometimes very attenuated.
This problem has gotten worse. At first, simply a quick tap on the PTT
switch fixed everything, but now, at least on phone, I must make a brief
additional transmission to get the receive to return. Today, the
problem got worse, and sometimes I have to really fuss with things to
get receive back. Here are some questions:
1. Is there a T/R relay in the K3, and does this sound like it is
sticking, at least to the extent that it does not make good contact
on receive?
2. Has anyone had the similar problem, and what was the solution?
3. If it is a relay, can it be replaced easily, or is this a return to
Elecraft situation?
4. If it is simply a relay replacement, where is the relay located?
Thank you,
Jan, KX2A
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
