At 11:52 PM 11/11/04, you wrote:
>The mentioned amplifier is not in the
>regular manual. It's a Continuous Duty
>PA, the 03a version for the 162-174 MHz
>range. Just for the trivia, the 01a is
>for 132-150.8 MHz, the 02a model for
>150.8-162 MHz ranges. The 03a version
>will not be happy on 146 MHz without
>much work.
>
>This PA is often called a Micor type PA,
>but it's only similar and not exactly the
>same. The circuit is a bit different.
>
>The only (that I know about) card that
>converts from Micor to the MSR is the
>Squelch Gate Module, which requires you
>swap the pins for the msr back plane
>type plug(s).
>
>You can find MSR Manuals on Ebay every
>so often, it takes two for vhf and all
>three for UHF because the power supply
>is in the (green) VHF manual.
>
>There were some as-built special manuals
>available, large binders with about
>everything ever made. I have one here
>and it shows the PA and the internal &
>external msr Alarm Modules. I don't
>need or use the alarm modules.
>
>You can find msr cards on ebay... if
>you use the normal card layout, you'll
>need the station control module, the
>R1-Audio and squelch gate cards. Other
>nice cards to have and use are the
>pl card (duplex version)& time out timer.
>
>The power supply battery charger is
>called Option C28AN.
>
>I have a number of MSR PA's from paging,
>taxi-cab and goverment applications, which
>appear no where but in the special
>as-built manuals.
>
>cheers,
>skipp
>www.radiowrench.com/sonic
---------
Thanks Skip. I think one of the problems I have is the unit came
from Eastern Canada and the Amplifier shown is a VLD1031A/VLD1032A.
(in the documentation)
One of those was the oringinal amp in the unit and was replaced at
some time due to maintenance. The Motorola logo has an Ontario
address so it is Motorola Canada and we do some strange things up
here sometimes..
I would like to be able to tune up the exciter without the amplifier
and make sure it is working ok. I am assuming that I should be able
to put 12v on the control voltage pin, P500, pin 16, (possibly use
a variable voltage power supply and start out low) terminate the
the exciter in 50 ohms, and then tune. Once I have done that, I
would try a micor 100watt amp and see how it handles it.
We have no plans at this time to put any cards in the cage but will
handle most of the functions with computer controller. Not sure
how it is going to turn out, but it has all kinds of possibilities.
Thanks again
Doug Appleton VE5DA
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