FT767

        I have had my Yaesu FT-767 modified by the service facility for three
things:
        1.  Memory battery circuitry.  Previously the circuitry caused
        unnecessary drain on the memory battery, resulting in shortened
        battery life.  There is a kit available for this modification,
        which I ordered (free of charge).  After reading the instructions
        and not being able to even find the components involved, I took
        the unit down to LA to the service facility.

        2.  Hum mod.  I don't know anything about this mod.  It was
        performed while the unit was in for the previous mod.

        3.  DATA IN/OUT Jack audio control modification.  This mod was
        originated by me.  Since I have had the unit, I had not used it
        for packet because I could not defeat the audio from the speaker
        in any way without rendering the audio from the DATA IN/OUT jack
        unusable.  This jack was supposed to provide direct connection to
        the FM modulator and discriminator for packet.  It obviously was
        affected by the AF gain, external speaker disconnect, i.e., anything
        which affected the audio at the built-in speaker.  Examination of
        the circuit diagram seemed to indicate the audio for this jack
        came from the headphone circuit.

CONTINUED IN FILE FT767.2

FT767.2

            When I submitted the unit for the previous mods, I asked about
        the possibility of correcting this obvious design error.  The
        gentleman in charge took all the information, and said he would
        advise.  I got a call from the technician to clarify the requested
        mod, and he advised he wouldn't be able to perform the mod without
        factory authorization.  After I was notified the unit was ready,
        (about 2 months later), I went to pick it up.  Along with the
        unit was a note saying, "You were right.  We hooked the unit up
        to a TNC and confirmed the problem.  I have reconnected this
        jack so that output is independent of AF control.  Output is
        about 200 MV."  which has proved to be more than adequate.  The
        note was signed by "Rick."  

CONTINUED IN FILE FT767.3

FT767.3
        I have run it into a Heath HD-4040,
        HK-21, and MFJ 1278T, and it works like gangbusters.  What a neat
        machine!  This one unit serves all my ham radio needs!  I no longer
        have to hook up my HT just to check into the local board.  I now have
        it hooked up to the MFJ 1278T, using one port for VHF/UHF into the
        DATA IN/OUT jack, and the other port into the PATCH jack, and out
        the AUDIO OUT jack, through a Super SCAF, (Switch Capacitor Audio
        Filter), to the TNC.

        I encouraged "Rick" to publish this mod as a factory-approved mod
        and so far, I have not heard anything about it.  If you seek this
        mod, try to talk to "Rick" and ask for the DATA IN/OUT jack audio
        control mod.  It is well worth the effort.  No, the mod was not
        free, and yes, I think it should have been free, but it wasn't,
        but the price was very reasonable, I think about $80 for the whole
        shebang.  73 and GL.

        Dennis N6KDS @ WA6YHJ-1,  Livermore.