[Elecraft] QSK Thump on KX-1

[Jeff Imel]

Update

I operated late last evening and the QSK thump stayed consistant all evening 
long.  This morning, I turned the rig on and over a two hour period and two 
QSO's I did not experience any thump at all.  I was using the same antenna 
as last evening and same external battery pack with a voltage of 10 volts.

Maybe it healed itself!  :)

73

Jeff
KB9ZUR


>From: "Jeff Imel" <jeffimel at hotmail.com>
>To: <elecraft at mailman.qth.net>
>Subject: [Elecraft] QSK Thump on KX-1
>Date: Sun, 13 Jun 2004 15:14:07 -0500
>
>My KX-1 is serial number 32.  It was built this week and it is a lovely 
>rig.  I do have a problem with QSK thump.  I am wondering if any of you 
>have experienced this and I am interested in learning what you did to 
>correct it.
>
>It thumps when it goes from transmit to receive and the receive audio 
>slowly comes back up to normal after about a half of second.  It does not 
>do it all the time, only after I have been sending for about a minute.  
>Once it starts thumping, it will continue to thump until I cycle power.  
>Sometimes that removes the thump, sometimes it doesn't.  I have tried using 
>three different antennas with and without an external tuner and nothing 
>removes the QSK thump.  I experience QSK thump on all bands.
>
>Any ideas?
>
>Thanks and 73
>
>Jeff
>KB9ZUR
>
>
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