KX-3/KXPA100 for multi-multi contesting?

[Drew Arnett]

Anyone try a KX-3/KXPA100 for multi-multi HF contesting like Field
Day?  How does the RX hold up with loud signals on other bands?  Plan
to run external band pass filters of course.  The KX-3 is so great at
everything else.  And it's great for single op HF contesting.  Just
wondering if it will fold in a strong signal environment.

Thanks and best regards,

Drew
n7da
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Drew

I suspect the issue is not so much with the KX3 assuming smart deployment and separation but rather with the brand of your other station’s rigs.

As you already know, I was possibly with one of them and my biggest issue (using a K3s) was the CW “thumping” I heard.

When I built and ran my portable kx3 S02r station which ran both occasionally through a trixplexer, filters and into a HexBeam, I had very little noticeable interference from one kx3 to the other.

Paul

> On Jun 1, 2021, at 7:29 PM, Drew Arnett <[hidden email]> wrote:
>
> Anyone try a KX-3/KXPA100 for multi-multi HF contesting like Field
> Day?  How does the RX hold up with loud signals on other bands?  Plan
> to run external band pass filters of course.  The KX-3 is so great at
> everything else.  And it's great for single op HF contesting.  Just
> wondering if it will fold in a strong signal environment.
>
> Thanks and best regards,
>
> Drew
> n7da
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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[Igor Sokolov-2]

Drew, KX3 is not the best radio for multi-multi environment. The radio
automatically protects itself by switching preamp off if 59+20 signal
appears on the band. With even stronger adjacent signal the radio
engages attenuation. Blocking dynamic range of the radio is not for
multi-multi. You would be much better off with several K3. They are
probably still the best choice for this kind of operation both TX and RX
wise.

73, Igor UA9CDC

02.06.2021 7:23, Drew Arnett пишет:

> Anyone try a KX-3/KXPA100 for multi-multi HF contesting like Field
> Day?  How does the RX hold up with loud signals on other bands?  Plan
> to run external band pass filters of course.  The KX-3 is so great at
> everything else.  And it's great for single op HF contesting.  Just
> wondering if it will fold in a strong signal environment.
>
> Thanks and best regards,
>
> Drew
> n7da
> ______________________________________________________________
> 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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[Jim Brown-10]

On 6/1/2021 8:02 PM, Paul GACEK via Elecraft wrote:
> I had very little noticeable interference from one kx3 to the other.

It's the proximity of ANTENNAS that matters, NOT the radios. Here are
slides for a talk I gave a couple of years ago at Visalia on all the
issues that arise with multi-transmitter operation.
http://k9yc.com/Multi-Station.pdf

73, Jim K9YC


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