Use a clip lead to short out the key terminals on the SB200 and see if the
relay keys and the idling current comes up to normal. That will answer your
question re the SB200. Don't know if the TS940 relay contacts (pin 4 to
ground) can really switch the SB200 safely or not, that's a combination I
never tried; however the modern Kenwood rigs (like my TS850S) will not key
such a high voltage and requires an external keying interface to safely key
an SB200.
WB2WIK/6
"Each success only buys an admission ticket to a more difficult problem." --
Henry Kissinger
> -----Original Message-----
> From: Barry Schieferstein [SMTP:BarryS@Core.Com]
> Sent: Tuesday, November 27, 2001 6:24 PM
> To: amps@contesting.com
> Subject: [AMPS] TS-940 and SB-200
>
> Having read everything I can find here and elsewhere about hooking up a
> TS-940 to a SB-200 I have decided to ask fo help. The remote output of
> the 940 uses pin 6 for ALC, pin 4 for the amp relay, and pin 2 as the
> ground. With this hookup I get no closure or voltage between pins 2 and
> 4. I do get closure between 4 and the outside of the din connector. When
> hooked up to the SB-200 there does not seem to be any keying (ie. no plate
> current). There is HV on the amp and everything else works on the 940.
> The amp was supposedly in working order when taken off-line years ago.
> Any suggestions as to where to start looking?
> Thanks,
> Barry KW8W
>
> barrys@core.com <mailto:barrys@core.com>
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