Vintage military/industrial RF electronic assembly marked “AMPL FREQ MULT RCVR” and Assembly 684377.

This is an older heavy-duty RF receiver/amplifier/frequency multiplier type module. Removed from old military radio base equipment. Exact specifications are unknown.

Visible markings include:

* AMPL FREQ MULT RCVR

* Assembly 684377

* J1 Input

* J2 Output

* TP1 +28VDC

* P1 multi-pin connector

* Internal subassembly Part No. 684331-C

* Internal subassembly Serial No. 19363

The covers were removed for inspection and photos. Internally it contains vintage discrete electronic/RF components, adjustable components, RF connectors and rigid RF plumbing. The internal component layout is marked directly on the cover as shown.

This unit has not been tested. I do not have the equipment or information needed to properly test it. Selling strictly AS-IS for parts, repair, restoration, component salvage or scrap. No guarantee of functionality.

Shows age-related wear, scratches, oxidation and discoloration. Please look closely at all photos for exact condition, markings and what is included.

You will receive the exact unit pictured.