[Elecraft] Adding PTT Out Switching to a K3

[Bob McGraw K4TAX]

Connect the KPA-1500 via the ACC cable and thus free up the PTT 
output.    The system is very smart and works exceptionally well.   I 
use this method with my KPA500 and KAT500.

The PTT Out is connected to the VHF transverter.

73

Bob, K4TAX

On 11/7/2019 10:44 AM, N4ZR wrote:
> I need to be able to disconnect the antenna to my SDRs when 
> transmitting.  This used to be easy but now my PTT Out jack is 
> committed to the KPA-1500.  I'm looking for suggestions of how best to 
> accomplish this - I don't believe sequencing is required, just a 
> second PTT output.
>
> Ideas?
>
> 73, Pete N4ZR
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>
> On 11/7/2019 9:30 AM, Ray Albers wrote:
>> ….thanks to comments and suggestions from K9ZTV and W2CS.
>>
>> My K3 has the Sub Receiver installed, and I have been playing around 
>> with
>> diversity reception, using a random wire connected to the sub-receiver
>> antenna input BNC connector.  Apparently the carrier operated relay that
>> protects the receiver from overload is being triggered by lots of RF 
>> coming
>> into that random wire. When I disconnect the receive antenna, no more
>> clicking. Now that I know what it is, I'll just ignore it. Or maybe 
>> someday
>> I'll rig a manual T-R switch arrangement to disconnect the sub receiver
>> antenna except when actually using it.
>>
>> Thanks, gents!
>>
>> 73
>> Ray K2HYD
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