ACC jack

I am setting up my newly purchased K3S and I have three devices that use
the same ACC jack on the transceiver. I use a Top Ten Band Decoder for
switching antennas and filters, a MicroHAM DigiKeyer II for CW and RTTY
and an Elecraft KAP500/KAT500 linear amplifier and tuner. The Band Decoder
and DigiKeyer II interface well individually with the K3S, I have yet to
try the amplifier ACC cable. How can I run all three devices
simultaneously though the single K3S ACC jack?  Elecraft supplied a Y
adapter with the amplifier cable.  Do I need another Y, is is safe to
connect all of these together with Y's?  Is there a better solution?

73,
John KK9A

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[Jim Brown-10]

On Mon,10/12/2015 8:40 AM, [hidden email] wrote:
>   an Elecraft KAP500/KAT500 linear amplifier and tuner.

John,

Neither of these really NEED the Accessory line, because both are very
good at instantaneously detecting transmitted RF and switching bands.
All it takes is a dit or a tap on the mic.

What both of these units DO need is RCA to RCA cables from K3S to KAT500
to KPA500 for PTT.

The only "feature" you lose by not using the AUX bus is the ability to
change bands using the push buttons on the KPA500, a feature I've never
found useful.

73, Jim  K9YC
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[Eric Swartz - WA6HHQ]

Hi John,

Its OK to daisy chain multiple ACC 'Y' cables. Be sure to check for possible
conflicts between your other external devices on the lines they may share.

Eric
/elecraft.com/

On 10/12/2015 8:40 AM, [hidden email] wrote:

> I am setting up my newly purchased K3S and I have three devices that use
> the same ACC jack on the transceiver. I use a Top Ten Band Decoder for
> switching antennas and filters, a MicroHAM DigiKeyer II for CW and RTTY
> and an Elecraft KAP500/KAT500 linear amplifier and tuner. The Band Decoder
> and DigiKeyer II interface well individually with the K3S, I have yet to
> try the amplifier ACC cable. How can I run all three devices
> simultaneously though the single K3S ACC jack?  Elecraft supplied a Y
> adapter with the amplifier cable.  Do I need another Y, is is safe to
> connect all of these together with Y's?  Is there a better solution?
>
> 73,
> John KK9A
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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[Jack Brindle-2]

As Eric notes, it is perfectly permissible to daisy-chain the Y adapters. I would suggest using the ACC signals with the KAT500/KPA500 combination. This is needed for the KAT500 to follow the K3S’s frequency during receive, something I think you will find to be very valuable in use. Having the KPA500 connected through the ACC interface is also very valuable, allowing the KPA to also switch bands along with the K3S instead of waiting for RF. The ACC cables that came with the KPA500 and KAT500 should be used to interconnect those devices - they have a few signals removed as described in the KPA500 manual.

So, go ahead and use the Y adapters as needed. Be sure they are straight-through signals - that is don’t use VGA-style adapters and cables. These do not connect each pin straight-through end to end and will not function satisfactorily. Besides Elecraft, there are sources that sell these cables, just make sure they are not VGA cables when you purchase and use them.

73!

Jack Brindle, W6FB

> On Oct 12, 2015, at 8:40 AM, [hidden email] wrote:
>
> I am setting up my newly purchased K3S and I have three devices that use
> the same ACC jack on the transceiver. I use a Top Ten Band Decoder for
> switching antennas and filters, a MicroHAM DigiKeyer II for CW and RTTY
> and an Elecraft KAP500/KAT500 linear amplifier and tuner. The Band Decoder
> and DigiKeyer II interface well individually with the K3S, I have yet to
> try the amplifier ACC cable. How can I run all three devices
> simultaneously though the single K3S ACC jack?  Elecraft supplied a Y
> adapter with the amplifier cable.  Do I need another Y, is is safe to
> connect all of these together with Y's?  Is there a better solution?
>
> 73,
> John KK9A
>
> ______________________________________________________________
> 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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