Re: [Repeater-Builder] Re: Motorola microphone schematic

8 Jan 2005 17:08:58 -0000

john i thought the 5v perceded the light bulb. mdm

"John J. Riddell" <[EMAIL PROTECTED]> wrote:
Ted, you would be excluded from the "Old-Guy" list being young and healthy :-))
Now didn't the 5V precede the 80D Motorola.....I worked on lot's of 80D's
but never a 5V.
 
John ( a Ham for 47 years)
----- Original Message -----
Sent: Friday, January 07, 2005 7:30 PM
Subject: Re: [Repeater-Builder] Re: Motorola microphone schematic

wadaya mean "old-guys"....i think its a relative term based upon a misperception.
i refuze to be classified generically as an 'old-guy'...even if it appears to be true.
mdm ted

"John J. Riddell" <[EMAIL PROTECTED]> wrote:

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:
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 [email protected], 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:
> > > 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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>





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Ted Bleiman K9MDM
MDM Radio Ltd -    
1629-B N. 31 st Ave
Melrose Park, IL 60160
708.681.0300 fax 708.681.9800
web http://www.mdmradio.com -
Check it now!!
 

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Ted Bleiman K9MDM
MDM Radio Ltd -    
1629-B N. 31 st Ave
Melrose Park, IL 60160
708.681.0300 fax 708.681.9800
web http://www.mdmradio.com -
Check it now!!
 

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