Hi Mike,
It is. This is something that doesn't show up all the time so we were
not aware of it until it was noted here on the list recently.
We're adding an additional power on mute time delay to the firmware
right now.
73, Eric
Mike Scott wrote:
The power on rush of noise is almost earsplitting here in headset and
external speakers, K3 serial 509. It lasts for about a quarter of a second.
If I had the volume turned up it could cause damage to a speaker or my ears,
it is that loud. For this reason alone it should be a high priority fix.
Perhaps just blank the receiver in the turn on sequence for enough time to
cover the transient.
It has existed over the last several firmware updates. I notice that it is
worse when the bandwidth is set wider such as 2.7 KHz SSB mode. It does not
matter if a signal is present or not. I have high background noise level
here (S-7) so I expect that might be equivalent to having a signal present.
When set for CW at 400 Hz the momentary noise is there but much-much subdued
and not objectionable at all so CW operators may not notice the effect. The
effect is there in SSB/Data/CW modes. I don't hear it in AM/13KHz.
Mike Scott - AE6WA
Tarzana, CA (DM04 / near LA)
K3-100 #508/ KX1 #1311
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