[Elecraft] KXPA100 with Other Radios

[Don Wilhelm]

Jose,

See page 18 of the KXPA100 manual.  Yes, you must provide a connection 
that grounds the PA KEY connection to the KXPA100.

I do not know of a commercial cable that will provide KEYOUT from the 
Flex to the KXPA100.

If you are not able to build the cable yourself due to whatever 
problems, perhaps you can find a local ham who would be willing to 
assist you with the soldering and cable construction.  Look for a ham 
who has been licensed for many years (likely has a 1X3 call).  We used 
to build our own gear and questions like this rarely came up.  We were 
all expected to be able to do soldering and follow a schematic by our 
peers.  Sadly, those days seem to be no longer the norm.

73,
Don W3FPR

On 10/14/2016 6:58 PM, Jose Rivera wrote:
> I am a happy KX3, KXPA100 owner.  I had the opportunity to obtain a Flex-1500 radio. I want to use the
> Flex-1500 with the KXPA100, since the Flex is a qrp radio.
>
> My question: Do I have to have a cable running into the KXPA's PTT plug or can the KXPA100 be keyed up by
> the Flex-1500 via just coax connections?
>
> I am terrible making cables and soldering, which is why I am loath to attempt to make a cable. And no one
> seems to sell such a cable. The Flex-1500 has a nine pin female DIN, While the KXPA100 has an RCA PTT.