[Elecraft] Elecraft] K3: switching on click

[Edward R. Cole]

I have K3 #4340 (kit) which I purchased in spring 2010 and it has a 
LOUD POP at power up every time.  I have it connected to an external 
speaker (plain speaker not an amplified one - ten inch diameter and 
probably 4-ohm resistance).  I also note this in the internal speaker 
if not connected to external speaker.  I does this even with audio 
gain at minimum.  There is a shorter snap when I shut down.  Guessing 
discharge of electrolytics in the audio amp?

The loudness of the pop is about the audio level one hears if the 
audio gain is advanced to 3-o'clock (75% full gain).  There is an 
audible snap in my headphones (plugged into the front jack) at power 
on.  The speaker is muted when I use headphones so I can hear the 
mild click of a relay at power on if I do not have on the 
headphones.  I do not hear the relay due to the loud POP if speaker is used.

I kind of ignore it but I worry about turning on the radio late at 
night as the loudness of the pop is heard in the bedroom across the 
hall with both doors closed.


73, Ed - KL7UW, WD2XSH/45
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