U.S. Army Signal Corps Publications

Training Manual No. 26. Radio Operator

Note:  The size of these files vary considerably because I scanned all of the photos and most of the drawings into grayscale.  If a section has a lot of photos or drawings it will be large!

Cover, Preface, Operations Index and Index of Illustrations. (341k) Pages 1-19, Primary Batteries Used In Radio Communications. (4.1 MB) Pages 20-26, Resistance.  (1 MB)
Pages 27- 33, Magnets.  (310K) Pages 34-49, The SCR-61 Wavemeter.  (4.7MB) Pages 50-55, The SCR-74-A Transmitting Set.  (Set Box BC-16-A)  (2.5 MB)
Pages 56-63, The SCR-74-A Transmitting Set.  (Coupled Circuits)  (358K) Pages 64-74, The SCR-54-A Receiver         (4.6 MB) Pages 75-82.  The SCR-95, SCR-125 and SCR-125-A Wave Meters.       (9.4 MB)
Pages 83-93, SCR-105 Set  (2 MB) Pages 94-101, The Vacuum Tube Detector D-T-3A  (3.7 MB) Pages 102-110, The SCR-72 Amplifier.  (2.9 MB)
Pages 111-115, The SCR-121 Amplifier.  (2.6 MB) Pages 116-135, The SCR-79-A and The SCR-99 Sets.  (6.8 MB) Pages 136-146*, The SCR-67-A Radio Telephone Set.  (7.4 MB)
Pages 147-164*, The SCR-130 Set.  (3.2 MB) Pages 165-183.  The SCR-127 Set.  (2 MB) Pages 184-200, The SCR-77A Loop Set.  (5.4 MB)
Pages 201-207, The SCR-77-B Set.  (360K) Pages 208-230, The SCR-109-A and SCR-159-A Sets.  (7.1 MB) Pages 231- 233, The Inverted "L" Antenna.  (126K)
Pages 234-235 The "V" Type Antenna.  (92K) Pages 236-239 The 40-Foot Umbrella Type Antenna.  (200K) Pages 240-242 are blank
Pages 243- 251, Information Topics.  (444K) Pages 252-255, The Scr-79-A and the SCR-99 Sets.  (186K) Pages 256-259, The SCR-67-A Radiotelephone Set.  (151K)
Pages 260-263, The Radio Sets SCR-77-A and SCR-77-B.  (205K) Pages 264-266, Hand Generator, Type GN-29-A.  (144K) Pages 267-273The SCR-109 and SCR-159 Sets.  (354K)
Page 274 is blank Pages 275-283 Index and publications list.   (229K)

*The schematics in this section are not included in the page numbering.