[Kenwood] Using TS870SAT with Collins 30L-1

[Jack]

Check W2ENY.  been using his interface between my Alpha & Pro II & 
III for some time

http://members.fortunecity.com/w2eny/



At 01:30 PM 6/21/2009, hamradio at twcny.rr.com wrote:
>Bob: This looks like a safe bet but now a cheap one. I think I will 
>give these folks a call
>
>http://ameritron.com/Product.php?productid=ARB-704
>
>
>Nick
>
>
>
>
>---- K2RET <K2RET at comcast.net> wrote:
> > Nick,
> >
> > Whether a direct hook up will work or not I can not answer.  However, I
> > myself have always used an isolation relay between my radio and 
> amplifiers.
> > Most of your older amplifiers keying circuits used 110 volts AC to pull in
> > the TX relay in the amp.  Modern radios are not designed to 
> handle this high
> > voltage as only small switching transistors are now used.  Tom, 
> W7WHY has it
> > correct.  Build a small 12v relay in a box with wires to connect from your
> > radio to your amp.  Use the radio keying circuit to pull in the relay and
> > the relay contacts to pull in the amps keying circuit.  The cost 
> is minimal
> > and the protection is well worth a few bucks.
> >
> > Bob - K2RET


Jack Hartley
K4WSB / VP2MSB
DXCC Honor Roll
QCWA OOTC
"Celebrating 50 years in Ham Radio"