FMTRU 5V
A 5V is a really old Motorla rig....I
have the schematic here somewhere for one !
Only the "Old-Guys" will remember this one....
John VE3AMZ
----- Original Message -----
From: "Rob" <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Friday, January 07, 2005 10:31 AM
Subject: [Repeater-Builder] Re: Motorola microphone schematic
>
>
> Well the specific one is from a CDM750 but I think most operate in
> the same basic manner. It isn't so much an exact schematic I need but
> a basic operation diagram. Motorola supplies about +5V on the mic
> line and the mic element is also connected throgh the PTT switch
> somehow.
> What I am trying to figure out is if I can use a mic amp to boost the
> gain for an autopatch.
> It is almost looking like I may have to custom build an amp out of a
> FET or something like an other responder did.
>
> As to the TU-154, all I get is hits for an old Russian airliner.
> Thanks -Rob-
>
> --- In Repeater-Builder@yahoogroups.com, Neil McKie <[EMAIL PROTECTED]>
> wrote:
> >
> > Not a problem, if you can remember which radio you had it
> > connected to when you installed it, I probably have the manual
> >
> >
> >
> > Neil
> >
> >
> >
> > Mark Holman wrote:
> > >
> > > type in TU-154 for Motorola, an old remote head with a amplified
> mic.older
> > > than dirt 1964 I think.
> > >
> > > I had one or 2 my dad gave me no radio though :-(
> > >
> > > M. H.
> > >
> > > ----- Original Message -----
> > > From: "Rob" <[EMAIL PROTECTED]>
> > > To: <Repeater-Builder@yahoogroups.com>
> > > Sent: Wednesday, January 05, 2005 1:15 AM
> > > Subject: [Repeater-Builder] Motorola microphone schematic
> > >
> > > >
> > > >
> > > > Anyone know if the schematic for an amplified Motorola Mic is
> > > > available on the net?
> > > > Still trying to get this autopatch going and having some real
> level
> > > > issues. My patch just doesn't have enough drive for the radio.
> > > > TIA -Rob-
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Yahoo! Groups Links
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> > > Yahoo! Groups Links
> > >
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