I had a little time to open up the power amplifier today and snapped a couple of pictures.

 

Amplifier & Power Supply
Amplifier & Power Supply
(click for a large view)
Amplifier Board Detail
Amplifier Board Detail
(click for a large view)
Lower Amplifier Compartment
Lower Amplifier Compartment
(click for a large view)
Upper Amplifier Compartment
Upper Amplifier Compartment
(click for a large view)

The upper two compartments provide shielding between the input & output connectors from the main board.

I looked up the RF transistors and only found this reference on eHam.com:

These clandestine part numbers were used only in OEM equipment and not sold as discretes under these P/N's.  A lot of them were used in Motorola 2-way equipment.

Last resource I had for M9619's and a whole pile of similar P/N's was "Baggybob" in Lake Geneva, WI.  Don't know if he has a website, but his telephone number is (262) 249-9895.  Good luck!

WB2WIK/6

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