how to run multiple antennas with KPA500

[Tom]

Quick question……..

How to you guys, using the KPA500, run 2 antennas? The picture of this unit
doesn’t show any extra antenna ports….is there an option for that?

I’m running a wire ant. for most HF bands and a separate yagi for 6M. I
don’t really want to fabricate an external relay system.  

Any comments appreciated.

Tom
W4TMW

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[Dick Dievendorff-4]

I currently have about five antennas connected to the output of my KPA500. I have a combination of KAT500 with its three antenna connectors, and one of those goes to a DX Engineering 2 x 8 antenna switch mounted at the base of my tower.

Dick, K6KR

> On Nov 18, 2014, at 06:12, [hidden email] wrote:
>
> Quick question……..
>
> How to you guys, using the KPA500, run 2 antennas? The picture of this unit
> doesn’t show any extra antenna ports….is there an option for that?
>
> I’m running a wire ant. for most HF bands and a separate yagi for 6M. I
> don’t really want to fabricate an external relay system.  
>
> Any comments appreciated.
>
> Tom
> W4TMW
>
> ______________________________________________________________
> 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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[mcduffie]

On Tue, 18 Nov 2014 09:12:30 -0500, [hidden email] wrote:

> How to you guys, using the KPA500, run 2 antennas? The picture of this unit
> doesn’t show any extra antenna ports….is there an option for that?

Normally, the output of the amplifier would go to a tuner, like the KAT500, or
whatever flavor your prefer, and then to an antenna switch to select antennas.
Some people only have a couple of antennas and the 3 output connections on the
tuner would suffice, but most serious hams have more than that, plus a dummy
load, multiple radios, etc.  You also need to consider lightning protection,
depending on where in the country you live.

Personally, I have the radio going to the amplifier, which goes to the tuner.
From the tuner, I select either the dummy load or my active antenna, leaving one
output port on the tuner unused.  I have the dummy load on the default (power
off) port, so that the load is on the radio/amp if the power fails.  From the
active antenna port on the tuner, I go to a 5 port arc suppressed antenna
switch, selecting one of 4 antennas (I need more ports).  I left out the
multi-radio switching and other complications in this description.

Gary
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