Before you get too far into this, please note Motorola made
three versions of the power supply you may be currently looking at.
Most likely, the power supply you have there is the intermittent
duty version. The part number of the power transformer and/or the
power supply model number will tell you for certain.
Intermittent duty is a 20-25% transmit / 75-80% receive ... meaning
the power supply won't survive when used as the so-called typical
ham radio repeater - where close to a 100% transmit duty cycle
should be expected.
Please post the power supply model numbers (all you can locate -
rubber stamped on the chassis) and the power transformer part
number too if possible.
Hope this helps,
BTW, I have the manuals on all three power supply chassis'.
Neil - WA6KLA
Matt wrote:
>
> Hi. I was given a Motorola Motrac base station...it's model #
> C53MHB-3100BR, and comes in the short cabinet, with card cage, etc.
> I was looking at it earlier today and see that there's a place for a
> Squelch Gate card and Tone Decoder card in the card cage, as well as
> a spot in the bottom of the unit where it looks like a second SO-239
> connector could be mounted. There are also separate cables running
> to the bottom of the cabinet from the TX and RX sections.
>
> This leads me to believe that this unit was made with the potential
> for conversion to a repeater station. My theory is that I could
> stick in one of my extra Squelch Gate cards, make two separate
> connectors for TX and RX, and do something to make the receiver stay
> active while the TX is running, and it should work.
>
> Has anyone done this before? Any suggestions, advice, notes, etc?
>
> Thanks,
>
> Matt
>
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