Posted by
Richard Ferch on
Jul 07, 2010; 2:34am
URL: http://elecraft.85.s1.nabble.com/K3-Audio-routing-question-tp5257517p5263387.html
Craig,
What you need is *not* diversity mode. Diversity mode will not allow you
to fine tune one receiver differently from the other one.
What you need is plain vanilla dual receive. You can either do it in SPLIT
mode the way you describe, or reversed (with the transmitter on VFO A, the
main receiver using the transmit antenna, and the subRX listening on the
Aux antenna and playing the role of the fine tuning receiver). Using the
reversed method, a simple tap of A>B brings the second receiver back to
your transmit frequency, whereas in SPLIT mode you have to press two
buttons (A/B then A>B) to bring the two receivers back together on your
chosen transmit frequency. Either way, you would set the subRX to receive
on its Aux input in order to listen on two antennas simultaneously.
With stereo headphones, the balance control will control the relative
volume in the two ears, i.e. the relative volume of the two receivers.
With a mono speaker (CONFIG:SPKRS = 1), or mono headphones plugged into
the rear speaker jack, you can control how much of each receiver you hear
in the mono audio using the balance control.
73,
Rich VE3KI
> Hi Rich ...
>
> Thanks for the response.
>
> Actually, I think I didn't explain myself well enough in my posting. I
> wasn't referring to a "DX split" situation where the xmit and rx freq are
> substantially different. I was referring to contest operation where I am
> running stations that are normally on my transmit freq but with the
> occasional need to fine tune the calling station if they are off
> frequency.
> Rather than do this with RIT, I am accustomed to using SPLIT, fixing my
> xmit
> freq on VFO B and fine tuning for rx with VFO A. This is what I did
> before
> installing the subRX.
>
> Now that I have the subRX, I want to do the same thing, except put the
> subRX
> in "diversity" mode so that I can listen with two antennas simultaneously
> while still reserving VFO B for the fixed xmit freq. This way I can
> listen
> at the same time to my Xmit antenna and an antenna connected to the SubRX
> Aux IN (usually my K9AY). These antennas have different noise levels,
> polarization and directionality, so it is useful to listen with both of
> them, at least until I find the station I want to respond to.
>
> My question revolves around how the "balance" control operates when set up
> as above. Some posters have indicated that it doesn't work when in
> "diversity" mode. I'm interested in what others have found useful when
> using this type of arrangement. i.e. - how to quickly emphasize one
> antenna
> or the other if needed for a particular station.
>
> 73 Craig AC0DS
>
>
>
>
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