Cryptologic Collection Equipments
1977 edition - NAVEDTRA 10251

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Contains explanation of features and operation for equipment used by Naval Security Group. Particular pieces of equipment listed below  are typically covered with a photo, brief description, and operating instructions. 

0. Index - download 0.6 MB pdf

1. Introduction to Cryptologic Equipments - pages 0-13 - download 4 MB pdf

2. Transmission Lines, Multicoupling Devices, and Antennas - pages 14-28 - download 4 MB pdf

• general information

3. Introduction to Receivers - pages 29-71 - download 10 MB pdf

• R-390A/URR receiver (0.5-32 MHz)
• R-1279/URR VHF receiver (30-300 MHz)
• AN/URR-52B receiving system (30-1000 MHz)
• AN/WLR-1 countermeasures receiving system (50-10750 MHz)
• R-1051/URR receiver (2-30 MHz)
• R-1513 HF receiver (1-30 MHz)
• R-1401A/G VLF receiver (1-600 kHz)
• R-1307A/GR receiver (3-810 kHz)

4. Demodulators, Rekeyers, and Demultiplexers  - pages 72-110 - download 9 MB pdf

• AN/FRA-86 (AFSAV-133D) frequency shift converter - photo - PDF pages
• CV-1627/URR (AFSAV-39C) two channel rekeyer
• CV-157/URR single sideband converter
• AN/FGC-78 (AFSAV-129) subcarrier telegraph channel selector
• AN/TCA-4 digital converter programming group (KINDER)

5. Teletypewriters  - pages 111-137  - download 6 MB pdf

• AN/UGC-49 automatic send-receive teletypewriter set (28ASR)
• AN/UGC-50 receive-only  teletypewriter set (28RO)
• AN/UGC-51 keyboard send-receive teletypewriter set (28KSR)
• TT-470/UG teletypewriter (modified 28RO) used with AN/GSQ-76 (TEBO)
• TT-471/UG teletypewriter (modified 28KSR) used with AN/GSQ-76 (TEBO)
• Model 40 teletypewriter equipment (KD, KDP, RO)

6. Magnetic Tape Recorders  - pages 138-175 - download 10 MB pdf

• AN/TNH-11 (AFSAV-75A) recorder-reproducer (1/4 inch, 2 channel analog)
• AN/GSH-19 signal data recorder-reproducer (1/2 inch, 8 channel analog) - backup for AN/GSQ-76 (TEBO)
• AN/UNQ-7E recorder-reproducer (1/4 inch, 2 channel analog)
• AN/TNH-20(V) recorder-reproducer (1/4 inch, 4 channel analog, 3-3/4 & 7-1/2 ips)
• AN/TNH-21 recorder-reproducer (1/4 inch, 4 channel analog, 5 speed) - photos & manual
• AN/GSH-28(V) recorder-reproducer (1/2 inch, 18 channel analog) backup for FLEXSCOP
• RD-289 digital magnetic recorder (1/2 inch, 7 track digital) used with AN/GSQ-76 (TEBO) and FLEXSCOP

7. Signal Analysis Equipment  - pages 176-205  - download 7 MB pdf

• AN/GSH-14 (AFSAV-101B) audio spectrum analyzer (Sona-Graph) - Info & Photos
• AN/GSH-23A(V) & GSH-24(V) audio spectrum analyzer (Sona-Graph) - Info & Photos
• RO-240/U signal data recorder (2-channel paper tape)
• RD-112A/U paper tape code recorder - photo
• Honeywell 1508 24 channel oscillograph (Visicorder)

8. Special Purpose Equipment  - pages 206-217 - download 4 MB pdf

• Tektronix 545B oscilloscope
• AN/GSQ-53 time signal set
• HP 651B test oscillator
• HP 5532A electronic counter