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Re: TU - 7 chip -was- (Kenwood Tone Board / Getting full use of a radio)



Joe,
The Kenwood Service manual has the schematic and the parts list for the TU-7
on page 71. IC-1 is a S7116A IC-2  is a MB88306  IC-1 does the tone decoding
IC-2 is a serial in to P out,  Manual P/N B51-2084-00 I purchased mine in
02, should still be available from Pacific Coast Parts.

Art, KC6UQH
----- Original Message -----
From: "Gary "Joe" Mayfield" <ks5z@AMSAT.Org>
To: <amsat-bb@AMSAT.Org>
Sent: Saturday, July 10, 2004 11:24 PM
Subject: [amsat-bb] TU - 7 chip -was- (Kenwood Tone Board / Getting full use
of a radio)


> So far no one seems to know about the pins for the TU-7 tone board as used
> by the TR-751/851.  Although several people did want to hear if I learned
> anything as they could use the help also.  If some one has a radio with a
> TU-7 would you be so kind as to send me the numbers off the chip on the
TU-7
> board?  That should be enough to get a start.  I believe it was used in
some
> other radios as well.
>
> Thanks and 73,
> Joe
> ks5z
> ex - ka0yos
>
> ----
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