Dave,
Maybe I overlooked it in your initial post, but I did not realize you
had no microphone connected.
Given those additional facts, I also believe there is some kind of bug
causing it. It is good that you noticed it. I don't think the majority
of K3 users use it for AM mode (even though it does a good job there)
and may not have noticed.
73,
Don W3FPR
On 1/17/2015 3:48 PM, dave wrote:
Don,
There is no mic attached to the K3 here. This info was included in
info sent to K3support.
But, even if random noise was the case, why would it occur only when
going into AM and not SSB or data?
I think known bug.
73 de dave
ab9ca/4
On 1/17/15 2:25 PM, Don Wilhelm wrote:
Dave,
I am just wondering if Elecraft support actually indicated that this
condition is a "known bug".
I suspect that with VOX on, the "TX momentarily" would more likely be
caused by some sort of noise in the shack.
If you have the VOX set sensitive enough, then even tapping on the
operating desk or moving the microphone (or even chair 'squeaks) can
cause it to go into transmit easily.
If the ANTIVOX setting is too low, that may trip the K3 into transmit
with sound from the speaker (or leakage from the headphones.
You may want to check your MENU: VOX GN and MENU:ANTIVOX settings to
be certain they are not the problem.
Those settings are dependent on the sensitivity of the microphone,
proximity of the mic to the speakers, and other factors dependent on
your shack and the ambient noise conditions in the shack, so settings
that are good for one situation will likely not work well in your
situation. The K3 manual text gives some hints for achieving the
proper settings for your shack.
73,
Don W3FPR
On 1/17/2015 3:09 PM, dave wrote:
Since I'm the one who began this thread, I'll update with the info
received from Elecraft. Someone might look it up and want to know . . .
They say that, yes, when going into AM mode via the MODE button,
with VOX ON, the K3 "will sometimes go into TX momentarily". So this
is a known bug. And, since it is "sometimes", that would account for
why it comes and goes on the K3 here.
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