misaligned transmit & receive?

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misaligned transmit & receive?

Michael Pfeuffer
Hi all,

I had trouble checking into a local RTTY net the other night.  It appears
that on 80m RTTY, I'm transmitting about 1.3 KHz above where I'm
receiving.  RIT, XIT & split are off.  I don't know if this affects other
bands or modes, since I mainly chase DX & am operating split anyway.  :)

I'm guessing that this is maybe a BFO issue.  Any thoughts or advice before
I start fiddling with my settings?

Thanks,
--Mike  WQ5C
K2 #4693

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RE: misaligned transmit & receive?

Don Wilhelm-3
Mike,

If you are using a hardware TNC with your RTTY setup, then it could be many
factors, and yes the alignment of the K2 filters could be one of those -
remember that the FL1 position determines the BFO that is used for transmit,
so if you were using a different filter for receiving, it could explain
things.

OTOH, if you are using computer soundcard generated RTTY afsk, then the
software can usually handle (and also insert) such an offset.

We really need to know more about your setup to provide an intelligent
answer.  The info above is really just educated guesses.  Let us know the
hardware setup, your filter settings (including associated BFO frequencies),
any software involved, etc.

73,
Don W3FPR

> -----Original Message-----
>
> I had trouble checking into a local RTTY net the other night.  It appears
> that on 80m RTTY, I'm transmitting about 1.3 KHz above where I'm
> receiving.  RIT, XIT & split are off.  I don't know if this affects other
> bands or modes, since I mainly chase DX & am operating split anyway.  :)
>
> I'm guessing that this is maybe a BFO issue.  Any thoughts or
> advice before
> I start fiddling with my settings?
>
> Thanks,
> --Mike  WQ5C
> K2 #4693
>
>

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