[Elecraft] Dual Ptt

[Bob McGraw K4TAX]

I basically do the same with different radios.   The K3S is connected to 
the KAT500 and then through the KPAK3AUX cable to the KPA500.   The 
other radio has a Amp Key output basically an open collector to ground 
which I connect to the PA Key input.   Either radio will key the KPA500 
and no switching or changes required. Just cables and connectors.  
Adding the KAT500 requires a second KPAK3AUX cable and slightly 
different wiring configuration. However, with either radio, no other 
changes required.   Just be sure you have the correct drive power set 
and TUNE power set for each radio before hitting the PTT switch.

All this is very easy to accomplish with the cables and connectors 
provided by Elecraft.  The worst part is that hams "over think" the 
solution.

73

Bob, K4TAX


On 11/3/2018 1:21 PM, Ralph S. Turk wrote:
> Hi all
>
> I need to be able to key the KPA500 & KAT500 from both a Yaesu 1000mp and my K3.
>
> I assume (I know don't assume) I can use diodes to isolate both radios.
>
> Any thoughts?
>
> Ralph, W7HSG/AFA9RT
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