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P3 showing sigs on Aux antenna in diversity mode?

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K2PO

P3 showing sigs on Aux antenna in diversity mode?

For 160, I've got a noisy TX antenna, and a quiet RX antenna. I sometimes
run them in diversity mode, with TX antenna connected to K3's ANT1 port,
and RX antenna connected to AUX port.

Diversity works fine.

But the P3 shows the IF from the noisy TX antenna - in which many weak
stations are obscured by noise.

Is there any configuration by which I can get P3 to show, instead, the
signals from the quiet RX antenna (connected to AUX input)?

Tnx,

/Bill, K2PO
Portland OR
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Dale Boresz

Re: P3 showing sigs on Aux antenna in diversity mode?

Hello Bill,

It *seems* to me that the following would achieve your goal, but the
gazillion cables behind the radios at this wireless station discourages me
from attempting to pull the K3 out away from the wall far enough to
actually try it.

-- Disconnect your low-noise rx antenna from the K3 'AUX RF' input, and
connect it instead to the K3 RX ANT 'IN'.
-- Then, engage the "RX ANT" button on your K3. You will then be listening
to your low-noise rx antenna on the main receiver, and that is what will be
displayed on the P3.
-- Then, use a BNC-to-BNC jumper cable to connect the K3 RX ANT 'OUT' to
the K3 'AUX RF' input. That will let you listen to your noisy TX antenna on
the 2nd receiver, the output of which will not be displayed on the P3.

73,

Dale - WA8SRA

On Sat, Dec 30, 2017 at 7:25 PM, Bill Conwell <[hidden email]> wrote:

> For 160, I've got a noisy TX antenna, and a quiet RX antenna. I sometimes
> run them in diversity mode, with TX antenna connected to K3's ANT1 port,
> and RX antenna connected to AUX port.
>
> Diversity works fine.
>
> But the P3 shows the IF from the noisy TX antenna - in which many weak
> stations are obscured by noise.
>
> Is there any configuration by which I can get P3 to show, instead, the
> signals from the quiet RX antenna (connected to AUX input)?
>
> Tnx,
>
> /Bill, K2PO
> Portland OR
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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Don Wilhelm

Re: P3 showing sigs on Aux antenna in diversity mode?

In reply to this post by K2PO

Bill,

The only way I know of is to dig into the SubRX and connect its IF
output to the P3. The buffer circuit is there, but is not brought out
of the SubRX enclosure.

I don't know of an easy way to transfer the P3 input between the main
and the SubRX, but myself, I would simply use a relay external to the K3
and operate it manually when you want to make the switch.

73,
Don W3FPR

On 12/30/2017 7:25 PM, Bill Conwell wrote: