This is a digitally copied and enhanced
Dept. of Army technical manual TM11-856A (
Collins R-390A/URR). It is
clear,
clean, and easy to read. It is printed on premium 24# paper with heavy covers and
bound with a plastic comb. No more struggling with unreadable photocopies!
The TM11-856A manual measures 8 1/2" X 11" with about
196 pages including
nine large one piece
fold outs.
Topics include: introduction, installation, operation,
organizational maintenance, theory, field maintenance, shipment and limited
storage and demolition, voltage diagrams, parts location diagrams, and
index.
The one piece foldouts include:
-
19" Block Diagram
-
19" Function Switch S-102 Diagram
-
19" Tuning Block Diagram
-
17" RF Gear train Exploded View
-
17" Filament and Oven Circuits
-
34" B+ Circuits
-
17" Wiring Harness
As per the original the schematic is provided in
two sections:
- 23" RF subchassis, VFO subchassis, crystal
oscillator subchassis, power supply subchassis, and part of the AF
subchassis.
- 23" crystal oscillator subchassis, IF
subchassis, and part of the AF subchassis.
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