[Elecraft] KPA500 cables needed

[Joe Subich, W4TV]

The FT-817/857/897 can not provide BCD "band data" at the same time it
is being used with CAT (computer) control.  The same mini DIN8 jack is
used for both functions on a switchable basis.

*IF* you are willing to give up CAT, the connections are given in the
KPA-500 manual.  If you need CAT, you will need to use a mini DIN8 "Y"
cable to pull pin 2 (TX GND/PTT Out) and pin 3 (ground) for KPA PTT.
TX GND is an open collector signal.

The FT-897 has an "extra" TX GND signal on the tip of the ACC jack.
A cable with stereo 3.5mm plug to RCA plug can be used to connect
the ACC jack to the KPA PA Key jack ... an off the shelf 3.5mm stereo
to 2 x RCA cable can be used for ALC and PA Key if desired.

No connection is necessary to the KPA-500 AUX jack if RF sensing is
used for band switching.

73,

    ... Joe, W4TV


On 8/9/2011 9:53 PM, Don Wilhelm wrote:
> Yaesu seems to do each transceiver model a bit differently, so a cable
> that will work with one Yaesu, may not work with another, even if the
> connector physically fits.
>
> What more can I say than - know the characteristics and pinout of
> whatever you are connecting to the KPA500.  It can work, but there is
> not a universal cable for all.
>
> 73,
> Don W3FPR
>
> On 8/9/2011 9:10 PM, iain macdonnell - N6ML wrote:
>> You *can* operate with your transceiver without the cable.  Just connect
>> the KPA500 to your transceiver and connect a Key-out (transceiver) cable
>> to the KPA500 key-in.  The KPA500 will quickly detect the band and
>> switch accordingly.
>> ... except the FT897D probably doesn't have a convenient "key out"
>> jack - it's probably a pin on a mini-DIN connector, hence the need for
>> a special (fiddly to make) cable.
>>
>>       ~iain / N6ML
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>