[Elecraft] XV144 transmits 5kHz low

[John Lemay]

Bob

 

For some reason I have not received your original mail, so excuse my piggy
back on Don's reply.

 

Firstly, 5kHz is a long way off ! If people called me 5kHz away, I probably
would not hear them at all.

 

Secondly, as Don says, the way the transverter works, with just the same one
oscillator running for tx or rx, it is pretty much guaranteed not to shift
between receive and transmit. So my guess is that you may have accidentally
engaged the RIT or more likely the XIT, or perhaps the split frequency
option. Everything you would do on 28MHz, your baseband for transverting, is
faithfully reproduced on 144MHz.

 

Regards

 

John G4ZTR

 

  _____  

From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Don Wilhelm
Sent: 23 February 2013 18:38
To: kd7yz at denstarfarm.us
Cc: K3 List
Subject: Re: [Elecraft] XV144 transmits 5kHz low

 

Bob,

I don't see how that shift could be coming from the XV144.  Its local
oscillator is running on the same frequency during receive and transmit.

I would check the K3 28 MHz output to see if the same thing occurs.

A guess --
It could be a mode thing.  If the others are operating with CW in SSB,
your K3 should be set similarly.  The default for the K3 is for CW to be
LSB - if others are operating with CW in USB, that could account for a
difference if you are changing modes on the K3.

The offset setting on the K3 is to account for any difference between
the actual frequency and the K3 transverter band reading, and is applied
to both transmit and receive.

73,
Don W3FPR

On 2/23/2013 10:08 AM, kd7yz at denstarfarm.us wrote:
> Howdy K3' people:
> Made a few contacts on 2m now, SSB & CW.  But everyone is telling me I
> am exactly 5kc low !
>
> In CONFIG:xvtr2 I see offset is 0.
>
> I have tried cw-rev too.
>
> Where else do I look for a TX offset .. as I am always on the correct
> receiving freq.
>
> thanks
>
>
>
>
>

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