[Elecraft] K3 - 2.73/1.98 Clicks on Power On

[Mike Scott]

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