[Elecraft] K2 audio pops

Fri Jul 11 13:30:22 EDT 2008

"Pops" when keying are not normal behavior for a K2. 

It is possible to cause some audio artifacts during keying because Elecraft
allows you to do something many other manufacturers do not: you can set the
T/R switching time arbitrarily short - right down to zero! The result of a
zero switching time are artifacts of some sort in the audio, since audio is
enabled while the T/R switching is actually taking place. That allows the
operator full control over the QSK behavior you want from obviously too fast
to absurdly too slow. 

I don't know if that's what you are hearing. It does not sound like it.

Suggest a e-mail to support at elecraft.com for some factory-level support.

Terry reported a different sort of audio "pop" that is normal for a K2. It
happens *only* when cycling the power. That is caused by electrolytic caps
charging/discharging in the audio output stage. It does not have anything to
do with keying, nor does it occur at any time except when turning power on
or off. 

Ron AC7AC

-----Original Message-----

OK FB Bill, thanks for the info. The main reason I got the k2 is because of
the excellent reputation as a CW rig.  I can't understand why a cw rig such
as this has to be operated in a special way to limit pops.  I am sure the
Ten-Tec guys are laughing at the fact that some k2 ops can't enjoy QSK !

The pops are present on the headphone as well as the speaker, and when in
the Test mode or not in test mode. 
The Noise reduction helps, but does not remove the offenders. Some previous
posts have wondered if the audio pops are becasue of a "mute delay" that is
not operating properly. The elecraft site has a reference to this problem,
but the link to a mod is broken. It is a old link. I was hoping to get more
info on the Mod and other possible fixes without having to change my ops
style (no QSK).  thanks.  

 --- On Thu 07/10, Bill Coleman < aa4lr at arrl.net > wrote:
From: Bill Coleman [mailto: aa4lr at arrl.net]
To: w4vpi at excite.com
     Cc: elecraft at mailman.qth.net
Date: Thu, 10 Jul 2008 08:32:21 -0400
Subject: Re: [Elecraft] K2 audio pops

<br>On Jul 8, 2008, at 5:41 PM, "" <w4vpi at excite.com> <w4vpi at excite.com>
<br>wrote:<br>><br>> I have a new k2 that is all but useless as a CW rig
because of audio pops... 

_______________________________________________
Join Excite! - http://www.excite.com
The most personalized portal on the Web!

_______________________________________________
Elecraft mailing list
Post to: Elecraft at mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com