Did a little more research and came up with MWA320 and MWA330 of which I was able to source some from ebay.
Thanks

On my 2200 that I acquired from someone it sort of works well but the output goes super spurious when you crank up the RF Vernier control.
Opened up the wideband amp and found some tom foolery going on in it.
Found U203, 204,205 had been replaced by some four-legged part and also a non-Motorola mod ...

Hey Guys,
I have two GM300 vhf radios that appears to be setup for 12.5Khz spacing.
The mod measures 2.5Khz on my service monitor, and going into mod alignment in RSS I max out the mod and all I get is +/- 3khz deviation.
The model number of both radios are: M43GMC29C2AA with a HLD8031A RF Board ...

The regulator got its smoke removed when I failed to notice one of the insulators on one of the transistors was missing and thus a direct short.
I figured it was not a factory mod but not really sure why someone would put that in circuit.
Perhaps to compensate for a problem elsewhere.

Hey All,
I have a R2001C that I am doing some refurbs on it and came across an issue with the HVPS A10 module.
The HV Source voltage feeding J1 Pin 3 has a LM7812 inserted between the Pin 3 of the 8 pin dip and the orange wire of the ribbon cable.
This looks like a factory mod because there are two ...