Hello All,
Lee, I will give a look at the circuit that you uploaded.
I think there may be some confusion as to what I am actually looking
for. Motorola made the normal power supply that operated from 110 vac
that was used in radios fed off of commercial power.
They also made a power supply that was designed for 12 volt battery
power input and provided some additional filtering for the 12 volts
and provided the 9.6 volts. This is the unit that I am looking for,
not the normal AC power supply.
I guess I am too much of a purist when it comes to these radios. I
don't mind changing a few parts to restore them to as close to factory
new as I can make them. As far as replacing the factory 110 vac input
power supply with a newer item, I can tell you from experience with
bad power on mountain tops that the ferro-resonant transformer in that
ancient old Micor supply will still be making voltage long after those
new whiz-bang switching power supplies have gone to their grave.
I am sure that there are lots of people with different opinions on
this subject, and that is what this hobby is all about, learning and
being able to discuss different schools of thought.
Thanks to all who have replied.
Joe - WA7JAW
--- In Repeater-Builder@yahoogroups.com, "ve7fet" <[EMAIL PROTECTED]> wrote:
>
> Hi Joe,
>
> As Jesse noted, you can eliminate the Micor power supply all together,
> if you are running it off an existing 12V DC plant.
>
> I have just uploaded a file in the files section (12vmicor.pdf) that
> details the mod that I have used on my stations.
>
> It uses an LM317 regulator, a couple resistors to set the output
> voltage to 9.6VDC, and a couple filter caps.
>
> I mount it just behind the A&S board in the chassis, to give the LM317
> a nice heatsink. USE AN INSULATOR BETWEEN THE LM317 AND CHASSIS.
>
> A couple jumpers on the backplane, and you're all set to feed it 12V
> from your plant.
>
> Feed the PA directly from your plant, and it will be happy.
>
> I have used this mod on VHF and UHF stations... just check the manual
> and make sure that the connections are same (there are a number of
> backplanes out there in the field).
>
>
> Cheers!
>
>
> Lee
> VE7FET
>
>
> --- In Repeater-Builder@yahoogroups.com, "Joe Burkleo"
> wrote:
> >
> > Hello,
> > I am in need of a Micor power supply to run a station off of a 12 Volt
> > battery bank. If anybody has one or two that they want to part with,
> > please email me off list.
> >
> > Thanks,
> > Joe - WA7JAW
> >
>
