[Elecraft] K3 Chirp on 6 Meters

[Peter Chamalian]

Thanks Cookie - the two hams who reported the chirp are long-time CW
operators who I've known for many years so I trust their feedback.  In a
separate case again the op reporting the chirp is a long-time CW op too.

 

Could this be some anomaly of propagation?  That would be very odd indeed.

 

Thanks again!

 

Pete, W1RM

 

From: WILLIS COOKE [mailto:wrcooke at yahoo.com] 
Sent: Sunday, August 12, 2012 9:14 AM
To: Peter Chamalian; elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Chirp on 6 Meters

 

Peter, I have operated 6 meter CW and I have not had a report of chirp.  I
have heard some signals that sound a bit strange because of propagation
anomalies.  I have no way of knowing if this is your problem, but recently
licensed hams have not heard the chirps that were common in the 50s and
earlier so do not assume that the reports are really valid.  Good luck!

 

Willis 'Cookie' Cooke 
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart

  _____  

From: Peter Chamalian <w1rm at arrl.net>
To: elecraft at mailman.qth.net 
Sent: Sunday, August 12, 2012 7:37 AM
Subject: [Elecraft] K3 Chirp on 6 Meters


If you have operated 6 meter CW and had a report of a chirp, I'd appreciate
hearing about it.  



I had several of them and my K3 is back at Elecraft right now for service,
but they are not able to reproduce the problem.  I know there is a mod for
the synthesizer board and that was made without solving the problem.  No,
it's not my power supply either - a big 50 amp Astron provides 13.77 volts
key up and 13.74 volts key down.  It's not RF because when I got the report
I reduced power (external amp off) down to the point where the station could
not copy me and the chirp was still there.



The strange thing is I had a local listen to my signal and it was clean.  At
a later time, two reports (one from eastern MA the other from SC and I'm in
central CT) said I had a chirp.  In both cases I had been on 6 for a while.



Is it frequency dependent?  Is it heat dependent?



Again, I would appreciate hearing from you if you have had reports of a
chirp on 6 meters - what frequency were you on at the time?  How long had
you been operating (was the rig getting warm?) or any other observation that
might help to pinpoint a way of duplicating the problem.



Thanks!



Pete, W1RM



______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html