GRC-106 Radio System

© Brooke Clarke 2010

Background
Components
    RT-662 Receiver Transmitter
    RT-834 Receiver Transmitter 
    AM-3349 RF Amp
    MT-3140 Mount
    RAD-9551 GRC-106 Test Set
    SM-422A Simulator
    Whip Dummy Loads
AN/GRC-122 or AN/GRC-142 Shelter
    MD-522 RTTY Modem
    MD-522A RTTY Modem
GRC-46
Training Films
Manuals
Links

Background

These radio sets were used in vehicles and shelters.  I'm making this page as a place holder for a list of manuals.

Components

RT-662 Receiver Transmitter

Covering 2.000 to 29.999 MHz (1 kHz steps) USB-AMe-CW-NFSK
51 pounds
27 VDC @ <= 45 Watts (2 A)
100 mw RF out





RT-662 Front
              Rich Johnson photo




RT-834 Receiver Transmitter

Covering 2.0000 to 29.9999 MHz (100 Hz steps) USB-AMe-CW-NFSK
46.5 pounds
27 VDC @  <= 45 Watts (2 A)


RT-834 Open Rich
              Johnson photo


RT-834 Front
              Rich Johnson photo
RT-834 Right
              Bottom Rich Johnson photo





AM-3349 RF Amp

200W CW, 400W SSB RF Amp that's made to work with the RT-662 or RT-834.
27 VDC @ <= 1 kw (38 A)


AM-3349 Top Rich
              Johnson photo

AM-3349 Left Rich Johnson photo
AM-3349 Front
              Rich Johnson photo AM-3349 Right
              Rich Johnson photo




Photo by Rich Johnson

MT-3140 Mount


RAD-9551 GRC-106 Test Set

The test set is in two parts.  One is an RF level meter for the exciter output and the other is an audio test set for the U-77 connector.

RAD-9551/GRC-106

RAD-9551/GRC-106

RAD-9551 Photos courtsey of Brian VK2GCE

SM-422A Simulator

This large test set can be used to test the performance of the modules in a GRC-106() system.

Whip Dummy Loads


AN/GRC-122 or AN/GRC-142 Shelter

Video tour of GRC-122 by R. Johnson

GRC-106A inside GRC-122 photo from R. Johnson

GRC-106A inside
          GRC-122

MD-522 RTTY Modem



MD-522 MD-522A
Mode
Output
Output
850 Hz FSK Tx
2000+/-425 Hz (850 shift) 2000+/-425 Hz (850 shift)
850 Hz FSK Rx
2000/1000 +/-425 Hz (850 shift) 2000/1000+/-425 Hz (850 shift)
85 Hz FSK
2805+/- 42.5 Hz (85 shift) 2805+/- 42.5 Hz (85 shift)
Voice
300 - 3000 Hz
300 - 3000 Hz
85 Hz Diversity NSK
2805/425+/- 42.5 Hz (85 shift) 2805/25+/-42.5/425 Hz
85 Hz  NSK + Voice (SSB)
2805+/- 42.5 & 200 - 2300 Hz 2805 Hz 42.5 & 200 - 2300
MD-522 photo courtesy of Scott Johnson
Meter Function: Meter Off, DC Loop No. 1, DC Loop No. 2, Discriminator, Regulated DC, Rcv Level.
Mode Selector: Pwr Off, 850 Hz, 85 Hz, Voice, 85 Hz Diversity, 85 Hz + Voice
Front Panel Fuse
MD-522 RTTY
          Modem

MD-522A RTTY Modem

Has Squelch Sens control and Meter Function does not include OFF.
Meter Function: DC Loop No. 1, DC Loop No. 2, Discriminator, Regulated DC, Rcv Level.
Mode Selector: 850 Hz, 85 Hz, Voice, 85 Hz Diversity, 85 Hz + Voice
Seperate ON-OFF toggle switch (may be combined with breaker?)
MD-522A RTTY
          Modem Photo by Thor Rasmussen (N6FNP)
MD-522A photo by Thor Rasmussen (N6FNP)


KW-7 RTTY Crypto box

 (Jerry Proc: KW-7)

Antennas

Whip
Whip using MS-11x sections (MS-116A at base with insulating sleeve, + 2 ea MS-116A, MS-117A & MS-118A & Tip eye protection ball)
GRA-4 - Two mast kit, no antenna
GRA-12 - Three mast kit, no antenna
GRA-50 Dipole
AS-2259 NVIS
AB-652 Mast Base
CX-10171/U HV Ant Cable

Cables

CX-10099/U Control Dog Bone Cable
CG-409H/U Amp RF Drive - RT Ant Coax cable
CX-1852/U Power Cable
CX-11016G  6' 

Audio Accessories

U-77 type like the H-33 Handset
H-227/H Handset
M-29() Mike
KY-116/U key
TS-585 Audio Level Meter
_____ Patch Panel
LS-166 Loudspeaker
J-1077A/U Portable Distribution Box TM 11-6110-201-12P

Misc

PP-1451/G Battery Charger for bench testing

RTTY Equipment

_____
_____

GRC-46

Shelter mounted TTY HF radio system.
Nomenclature
Description
UGC-4
Page Printer
TT-76
Reperforator - Transmitter
T-195
Transmitter
R-392
Receiver
MD-203
Modulator - Demodulator
CV-278
Frequency Converter
?
24VDC to 110 VAC Rotary Converter
(power for UGC-4 & TT-76)
J-1195
Interconect Box for Crypto Operations
J-668
Interconnecting Box
KY-116U
Leg Key
LS-166U
Loudspeaker
M-29U
Microphone
?
Shelter
M37
Truck

Training Films
TF 11-3305 Radio Set AN/VRC-12 - RT-66, RT-67, RT-68 are replaced by VRC-12 which consists of: RT-246, RT-524, R-442
TF 11-3314 Radio Teletyperwriter AN/GRC-46 -
SFR 66-43B U.S. Army Communications - Vietnam (1966)  - about 11 minutes into the film are VHF tactical radio systems TRK-24, at 14 minutes is TTY
RG 208 Radio Proximity Fuse-Weapon Behind Victory (1945) -
SSTR-1 Strategic Services Transmitter-Receiver Number One - spy radio in parts small enough to conceal
MF 11-9416 The Invisible Battleground (1941) - EMC
TF 11-3697 Hand Sending International Morse Code (1966) -
TF 11-2716 Pole Line Construction - Part III (1958) -
R&D PR3 United States Army Research and Development - Progress Report Number Three (1961) -
TF 11-1386 Radar: Technical Principles (Reel 1) - Part 2 - Mechanics -
TF 11-1386 Radar: Technical Principles (Reel 2) - Part 2 - Mechanics
TF 11-1386 Radar: Technical Principles (Reel 3) - Part 2 - Mechanics -
TF 11-1387 Radar: Technical Principles (Reel 1) - Part 3 - Indicators -
TF 11-1387 Radar: Technical Principles (Reel 2) - Part 3 - Indicators -
TF 11-1387 Radar: Technical Principles (Reel 3) - Part 3 - Indicators -
TF 11-1387 Radar: Technical Principles (Reel 4) - Part 3 - Indicators -
TF 11-1387 Radar: Technical Principles (Reel 5) - Part 3 - Indicators -
Target Invisible - B-29 radar controlled bombing W.W. II Japan (Wiki: H2X Mickey radar)
Scatter radar: Space research from the ground - measure electron density in upper atmosphere
TF 11-3156 Radar and Its Applications (1947) - British Chain Home, 1938: SCR-268 (Wiki) light and artillary control, 1939: SCR-270 (Wiki) (@ Pearl Harbor Wiki)) & SCR-271 search, A-Socpe, J-Scope, B-scope, PPI, IFF (Wiki), SCR-584 (Wiki), SAGE (Wiki), NORAD (Wiki), DEW (Wiki), FPS-36, TPS-1F/G, FPS-24 (Wiki), Sparrow missile (Wiki), NIKE (Wiki),
in 26:60 there are a number of rack mounted tube type devices with a centerl circular object, what is it?, Hawk missile (Wiki), Atlas missile (Wiki), FPS-16 (Wiki),Over The Horizon Radar (Wiki), MPQ-10 mortar, MPQ-4 , Side Looking Radar (Wiki: SLR, SAR), TPS-25 Gen Surv, TPS-33, PPS-6,
TF-3184 AN/TPS-25 Ground Surveillance Radar, Moving Target Detectioon (1961) -
TF 6-3251 The AN/TPS-25 Ground Surveillance Radar (1962) -
MN8213 1957 Georges Bank RADAR Station - 160 mi ESE of Boston on an ocean platform
TF 9-1512 Fundamentals of Balistics (1948) - Interior, Exterior, Terminal
111-FB-4  - Part 1, the wire thrower RL-37-T2 (1941) - 1 mile of WD-110 or 110B filed wire played out behind a truck at up to 30 MPH up to 45' high and/or 70' to either side. Recover at up to 10 MPH. Part 2 is about camouflage netting, Part 3 tiltable trailer - tractor just drives on,
TF 11-3616 Geneva Conventions and Counterinsurgency (TF 27-3616) (1965) -

Manuals

GRC-106()

TM Number DIS Code Publication Title
TM 11-5820-520-10
D
Radio Sets, AN/GRC-106 (NSN 5820-00-402-2 AN/GRC-106A (5820-00-223-7548)  Operator's Manual
TM 11-5820-520-12 ? ?
TM 11-5820-520-12-HR A
Radio Sets, AN/GRC-106 (NSN 5820-00-402-2263) A& AN/GRC-106A (5820-00-223-7548)  Hand Receipt
TM 11-5820-520-20 D Radio Sets, AN/GRC-106 (NSN 5820-00-402-2263) & AN/GRC-106A (5820-00-223-7548) Op Maint Man
TM 11-5820-520-20P-1
A Radio Set, AN/GRC-106 (NSN 5820-00-402-2263)  Org Maint Parts & Spcl Tools
TM 11-5820-520-20P-2 D Radio Set, AN/GRC-106A (NSN 5820-00-223-7548)  Org Maint Parts & Spcl Tools
TM 11-5820-520-34 D Radio Sets, AN/GRC-106(V) (NSN 5820-00-402-2263) & AN/GRC-106A (5820-00-223-7548) DS, GS & Depot Maint Man
TM 11-5820-520-34P-1 A
Radio Set AN/GRC-106 (NSN 5820-00-402-2263)  DS & GS Maint Parts & Spcl Tools
TM 11-5820-520-34P-2 DNF Radio Set, AN/GRC-106A (NSN 5820-00-223-7548)
TM 11-5820-520-35 ? Radio Set AN/GRC-106 DS, GS & Depot Maint Man
TM 11-2300-350-15-1 ? Installation of Radio Sets AN/GRC-106 in Truck, 1/4-Ton, 4 by 4 M38A1, 29 April 1966
TM 11-2300-358-15-1
? Installation of Radio Sets AN/GRC-106 in Carrier, Cargo, Amphibious M116
TM 11-2300-359-15-1
? Installation of Radio Sets AN/GRC-106 inCarrier, Command Post M577

MD-522() Modem

What is the difference between the MD-522 and MD-522A? Let me know.
TM Number DIS
 Code
Publication Title
TM 11-5805-387-10-2 ? Radio Teletypewriter Modem MD-522/GRC Operator's Manual 5 Apr 1984
TM 11-5805-387-10-2
? Radio Teletypewriter Modem MD-522A/GRC Operator's Manual 5 Apr 1984
TM 11-5805-387-20-1
? Radio Teletypewriter Modem MD-522/GRC Org Maint 5 Apr 1984
TM 11-5805-387-20-2
? Radio Teletypewriter Modem MD-522A/GRC Org Maint 5 Apr 1984
TM 11-5805-387-20P-2
? Radio Teletypewriter Modem MD-522A/GRC Org Parts & Spcl Tls List
TM 11-5805-387-24P-1
? Modem Radio Teletypewriter MD-522 ( NSN 5815-00-999-5277) Org, DS, GS, Depot Parts & Spcl Tls List Jan 1977
TM 11-5805-387-34-1
? Modem Radio Teletypewriter MD-522 ( NSN 5815-00-999-5277) DS, GS Maint 11 May 1984
TM 11-5805-387-34-2
? Modem Radio Teletypewriter MD-522A  (NSN 5815-00-919-4800) DS, GS Maint 11 May 1984
TM 11-5805-387-34P-2
? Radio Teletypewriter Modem MD-522A/GRC (NSN 5815-00-919-4800) DS, GS, Depot Parts & Spcl Tls List June 1979

GRC-122 & GRC-142 Teletypewriter Set


TM Number DIS
 Code
Publication Title
TM 11-5815-334-20P-1
? Radio Teletypewriter set AN/GRC-142B (NSN 5815-00-443-5511) Org Maint Parts & Spcl Tls List 1 Aug 1985
TM 11-5815-334-20P
? Radio Teletypewriter Sets AN/GRC-122, AN/GRC-122A, AN/GRC-142, AN/GRC-142A & AN/GRC-142B
Org Maint Parts & Spcl Tls List 9 Jan 1978
TM 11-5815-334-34P-1
? Radio Teletypewriter set AN/GRC-142B (NSN 5815-00-443-5511) DS, GS, Depot Maint Parts & Spcl Tls List 1 Aug 1985
TM 11-5815-334-34P
? Radio Teletypewriter Sets AN/GRC-122, AN/GRC-122A, AN/GRC-142, AN/GRC-142A & AN/GRC-142B
DS, GS, Depot Org Maint Parts & Spcl Tls List 2 Dec 1977

 

SM-422A Simulator


TM Number DIS
 Code
Publication Title
TM 11-6625-847-12
? Simulator, Radio Frequency SM-442A/GRC Operator & Org Maint Aug 1967

If there's some interest I could offer a CD-ROM with the manual that have been enhanced by adding meaningful bookmarks and links.  Let me know if interested.

Links

Richard Johnson - GRC-122 RTTY Shelter

Mike Heltborg W7NPA (Hill Top Army Radios)-  The GRC-106 Radio and AccManuals
Rat Rig - GRC-26 (BC-610, BC-342), GRC-46 (GRC-19), GRC-122 (GRC-106), GRC-142 (GRC-106)

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page created Mar 31 2010.