[Milsurplus] Frequency Multiplier

[Glenn Little WB4UIV]

In cleaning the shed, I rediscovered a module that I bought at a hamfest. 
Hopefully someone will recognize it.

The markings say "CMC 455-161 FREQUENCY MULTIPLIER 8A2 SER.NO. 162"
In relief in the casting is "CMC407-069"
On top of the module are two attenuators one marked "CMC333-438/1 
ATTENUATOR 1.75 db 8A2 AT1" The other has the same markings but is AT2 and /2.

The multiplier is in a casting with a divider in it. On each side of the 
divider are four plunger/piston glass capacitors, four coils on plastic 
forms, two air wound coils, two fixed glass capacitors, two (what appear to 
be varactor) diodes stud mounted, marked MA4060C and two resistors. The 
capacitor tuning slugs are all connected to a tuning rack that goes through 
a worm gear to a flex shaft. Each slug can be fine tuned and fixed within 
the rack with a set screw. There is no bias applied to the varactors. There 
is no DC blocking within the module. DC could be passed through the tuning 
chain, except that on end of each tuning chain has a small air wound 
inductor to ground. One attenuator is in line with each tuning section. The 
coax in and out of the assembly (four pieces) are small TFE insulated and 
have push on RF fittings about the size of SMC. The module mounts with 
three captive screws from small flanges on the base. These flanges are 
painted red. The piston capacitors are made by Roanwell and are marked 
MG111xx where xx is a number in the range of 56 - 60.

Any ideas as to parent equipment and application?

Thanks
73
Glenn
WB4UIV