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Notice: The Collins Collectors Association has received permission from Rockwell Collins 
to reproduce manuals,  service bulletins and service information letters pertaining to Collins
equipment.  I am delighted to report that CCA has decided to make these materials
freely available to the general public.  The job of converting such a large amount of information 
into electronic form is a very time consuming job and the CCA volunteers are to be commended 
on their work.  Thanks to their efforts we can look forward to having access to all of the printed 
material relating to the Collins amateur equipment of yesteryear. 
Check out the Collins Collectors Association website.  If you are a Collins collector, you should
definitely consider joining the CCA.  The site is growing and now contains quite a few manuals.
You can go directly to the Technical Archives to check out the collection.
21 E/M Schematic of Collins 21 E/M transmitter.  Compliments of an unknown contributor.
30L-1 Technical Manual TM 11-5820-532-15, Organizational, DS, GS, and Depot Maintenance Manual, Amplifier RF AM-3979/FRC93 (Collins Model 30L-1).  Compliments of an unknown contributor.
51J Gear Box Notes on the 51J Series Gearbox (51J-2, R-388, 51J-4).
Compliments of Bill Kirkland, VE3JHU.
51J-3 Manual for 51J-3/R-388.  Compliments of Rodney Bunt, VK2KTZ. (4MB)
51S-1 (G-133F) Material on the G-133 which is a Collins 51S1 heavily modified by LTV for air force use. Also there is some information concerning the added mixer.  Compliments of Gary Fender, W5UUO.
75A-1 Sams Photofact Manual for the Collins 75A-1 receiver.  Compliments of an unknown contributor.
B&W 340-A Q-Mult. and Notch Filter for KWM-2/2A.   Compliments of Paul Godwin, N5PG.
Kiron Installation manual for the Memory Adapters for KWM-380/HF-380 Transceivers.
R-105/URR Schematic.  Compliments of Bill Weinel, W4WHW.
R-388 changes Change Orders for R-388 Technical Manual. Compliments of Bruce Brackin.
RITEK RIT Brochure and manual for RITEK RIT accessory for the Collins KWM-2 series of transceivers.  Compliments of John Webb, W1ETC.
SG-13/ARN Mil Tech Manual for Signal Generator.
Waters Mil Tech Manual for Waters Rejection Tuning module, from Jim Miller N4BE
KWM-380 Control Interface Instructions for building and installing a keyboard interface circuit similar to the KWM-380 AC-3803 Control Interface.  Compliments of Lee Craner, WB6SSW.
KWM-380 Power Control Simple circuit to control output power of KWM-380 in SSB mode from K4XL.
KWM-380 Spot Switch Mod Manual for the KWM/HF-380 Spot Switch modification for tuning.  Compliments of Lee Craner, WB6SSW.
KWM-380 Keypad Instructions for mounting KWM-380/HF-380 Keypad in base of SM-280, SM281 or Turner 750 series microphones.
Compliments of Lee Craner, WB6SSW.
828E-1 Collins 828E-1 Power Rock 5 kW PWM broadcast transmitter. It used 2 tubes, and ran pulsewidth modulation, circa 1978.  For schematic info, contact John Lyles, K5PRO at jtml@lanl.gov