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Switching or sharing the ACC/AUX line between KPA500 and KPA1500

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Dan AE9K

Switching or sharing the ACC/AUX line between KPA500 and KPA1500

In preparation for the arrival of my KPA1500 I was wondering if a simple
two-port VGA switch would be the best approach for switching the ACC/AUX
line to allow the selection of the KPA500 or the KPA1500. Or is a simple Y
cable ok? Pin 10 PTT would be open ahead of the switch or Y cable to allow
continued use of the keying line which is switched among two amps currently
- soon to be a third.

I assume at some point the KPA1500 will just become the only amp connected
but in the short term a lot of A/B testing will occur so I'm just looking
for the simplest means of accommodating both the KPA500 and KPA1500 without
moving the ACC cable back and forth.

73,

Dan
AE9K

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Don Wilhelm

Re: Switching or sharing the ACC/AUX line between KPA500 and KPA1500

Dan,

Some "VGA" switches switch all 15 lines while others do not.
You need one which switches all 15 lines. Be certain before you buy.

Don W3FPR

On 10/10/2017 5:16 PM, Dan AE9K wrote:

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Rick Tavan-2

Re: Switching or sharing the ACC/AUX line between KPA500 and KPA1500

In reply to this post by Dan AE9K

Although you may use a different combination of ACC signals than me, FWIW I
routinely parallel multiple sets of accessories off my ACC connector. When
I'm operating remotely, I have two band decoders, a RemoteRig box, and a
KPA500 connected. No switch, no problem.

If you're using circuits I'm not and have a problem, note that many VGA
switches don't switch all 15 lines.

73,

/Rick N6XI

Rick Tavan
Truckee, CA

On Tue, Oct 10, 2017 at 2:16 PM, Dan AE9K <[hidden email]> wrote:

> In preparation for the arrival of my KPA1500 I was wondering if a simple
> two-port VGA switch would be the best approach for switching the ACC/AUX
> line to allow the selection of the KPA500 or the KPA1500. Or is a simple Y
> cable ok? Pin 10 PTT would be open ahead of the switch or Y cable to allow
> continued use of the keying line which is switched among two amps currently
> - soon to be a third.
>
> I assume at some point the KPA1500 will just become the only amp connected
> but in the short term a lot of A/B testing will occur so I'm just looking
> for the simplest means of accommodating both the KPA500 and KPA1500 without
> moving the ACC cable back and forth.
>
> 73,
>
> Dan
> AE9K
>
>
>
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> ______________________________________________________________
> 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]
>