[Elecraft] signal offset during transmission with Panadapter?

[tomb18]

HiOK thanks! Just as I thought but wasn't sure 73 Tom 


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-------- Original message --------From: Don Wilhelm <donwilh at embarqmail.com> Date: 2017-12-22  2:54 PM  (GMT-05:00) To: tomb18 <tomb18 at videotron.ca>, Elecraft Reflector <Elecraft at mailman.qth.net> Subject: Re: [Elecraft] signal offset during transmission with Panadapter? 
Tom,

That is the result of the transmit signal leakage into the receive IF 
output.  If it is bothersome, a relay operated with PTT to break the IF 
output would be in order.

It is not a true representation on the final transmit signal because of 
shaping circuits in the K3 transmit chain following the leakage point. 
So it cannot validly be used to analyze the final transmit signal.

73,
Don W3FPR

On 12/22/2017 1:45 PM, tomb18 wrote:
> Hi . I was wondering if anyone could explain something to me please. If one has a Panadapter like lppan or sdrplay attached to if out the k3, and you transmit, you see the transmitted signal displaced a couple of kHz higher. Why exactly would this happen? I have some ideas but I am not quite sure. Thanks.