Mike,
This sound to me like you have to make a trip to the remote site to see
what is going on. A soundcard failure may have applied DC voltage to
the K3 and damaged it (but I have never heard of that happening).
You may have a soundcard failure of some sort and no audio is getting to
the K3 - so go to the site with another soundcard in hand to use if
necessary.
When testing with the new soundcard, if the Line In does not work, lower
the computer output of the soundcard and try Mic In (change the MIC SEL
menu). If that gets audio to the K3 while Line In does not, then
contact supp...@elecraft.com to see where you should go from that point.
73,
Don W3FPR
On 3/9/2020 7:50 PM, Michael Tope wrote:
Recently I've made some configuration changes at my remote station that
should in the end improve things. In the short term, however, it has
caused problems when working voice. Specifically I was getting feedback
if I raised the line out level on the PC too far past a certain
threshold which seem to depend on the K3 compressor settings (in case
you are wondering, yes, the K3 monitor level was set to 0). Despite
these problems, I was able to make some 40 meter SSB contacts Sunday
morning during the ARRL DX Phone contest.
On Sunday afternoon, I connected to the remote with about ten minutes to
go in the contest and heard PY0F calling CQ on 20 meters with a very
loud signal. Not having touched the settings from the night before, I
figured I would tweak the tuning on the KAT-500 and then just call him.
Things did not go well. The rig broke into audio feedback and I lost
transmit/receive control for what seemed like a forever, but was
probably in reality only about 15 seconds.
After I regained control of the rig, I power cycled the rig and then
power cycled the computer (I can do that remotely). The K3 still works
fine on CW, but I can no longer operate SSB. TeamViewer indicates I am
getting audio to the remote site, but the radio no longer responds. I've
tried both VOX and manually switching to transmit. Either way, I get
nothing. I even tried playing a local audio source on the computer at
the remote site which should have gone straight into the K3. I still got
nothing.
IS IT POSSIBLE TO DAMAGE THE LINE INPUT OF THE K3 IF IT IS OVERDRIVEN BY
A SOUNDCARD LINE OUTPUT OR DOES THE K3 SOMEHOW SELF-PROTECT? IF THE
FORMER, WHAT PART IN THE K3 SERVES AS THE "FUSE"?
I know it is premature to assume the K3 is damaged as I haven't
physically been to the remote site test the rig since the incident, but
I wanted to understand what the worst-case scenarios might look like.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
