F. W. Chesson						FILE: DOC\TM-11.HTM
144 Fiske Street,					 New: 3 January, 1994
Waterbury, CT  06710					 Rev: 14 August, 2000  



	       Signal Corps Technical Manuals, TM-11 Series 

     Technical Manuals originated ca 1940 as a consolidation of earlier 
Radio Pamphlets, c 1918; Radio Communications Pamphlets, c 1921; and
Training Manuals, Training Regulations, and Technical Regulations, c 1930.
     TM 11-201, the earliest known, is entitled "Aircraft Radio SCR-134" 
and was formerly documented TR-1201-5.
     Initially, the manuals were not always grouped by equipment category,
as the need did not then exist. With the explosion of equipment in World 
War Two, groupings soon became necessary, as are listed below.

     Many of the earlier numbers were "recycled" when the equipment for 
which they were originally designated became obsolete. There was also an
inclusion of early 1950s equipment among much older units. In some cases, 
an A or B prefix was added to an original number for updating.  But in 
general, a new number would be issued, especially in the latter 1950s.
     In 1958, a new FSN (Federal Stock Number) procedure was instituted, 
which more accurately defined the item in question and linked its TM 11- 
number to its supply number. See description following TM 11-5700 series, 
below.

			     General Categories 

TM 11-set		       Topics Covered 
---------------------------------------------------------------------------
200s		Mainly complete radio sets (SCR), including DF eqp.
300s		Specialties, as indicated below:
300-350		Telegraph and Telephone Equipment
350-359		Teletypewriter Equipment
360-379		Line Construction and Miscellaneous Wire Equipment
380-389		Cryptographic Equipment
390-399		Visual Equipment
400s		Mixed equipment, plus instructional texts
400-409         Photographic Equipment
410-419		Pigeon Equipment
420-429		Meteorological Equipment
430-499		Miscellaneous Equipment & Training Manuals
500-549		Radio Sets, Aircraft
550-599		Radio Sets, Aircraft (including DF)
600-650		Radio Sets, inc. Mobile
650-690		Texts
700-750		Interphone & Audio Equipment (Ground)
750-800  	Training Manuals
800-849		Transmitters
850-899		Receivers
900-999		Power Supplies

1000 - 1099	Miscellaneous Air & Radar Equipment
1100 - 1199	Radar Sets
1200 - 1299	Miscellaneous Ground Radar Equipment
1300 - 1399	Technical Operation Manuals (Radar)
1400 - 1499	General Maintenance Manuals (Radar)
1500 - 1599	Service Manuals (Radar)
1600 - 1699	Field Service Procedures Manuals
1700 - 1799	NA
1800 - 1899	Higher Echelon Repair Manuals
1900 - 1999	NA

2000s		Telephone Equipment
2100s		Telephone Systems and Centrals
2200-2249	Teletypewriter Equipment
2250-2300	Line Construction and Miscellaneous Wire Equipment
2300s		Photography
2400s		Meterology
2500s		Test Equipment
2600s		Antennas and Test Equipment
2700s		Installation of Equipment (small selection)
2800s		Installation Manuals
 
3000s	        NA

NOTE:		The entire TM 11-4000 Series is devoted to Maintenance 

4000s		Repairs of Radio Equipment
4100s		Repairs to Telephone Equipment
4200-4299	NA
4300s		Repairs to Telephone Systems 
4400s		Repairs to Telephone and Telegraph Terminals
4500-4699       Repairs to Power Equipment
4700		Repairs to Miscellaneous Equipment
4800-4999	NA

5000 Series	Antennas and RF Test Equipment
5100		Misc. Electronic Equipment
5200		NA
5300            Photography-Audio Visual (small selection)
5400		NA
5500		Mostly Audio Equipment
5600            NA
5700            NA

In Mid-1958, the FSN Series appeared, consisting of a four-digit number, 
followed by a three (rarely four) digit model number of the apparatus in 
question, then a two-digit number defining the scope of the manual.  
A P-Suffix indicates that a Parts List is involved.  The system commenced 
with a new category number, 5805 though a few instances of lower lumbers 
are known.

Example:  TM 11-5805-201-12P is for Telephone Set TA-312/PT.  It contains 
          Operating Instructions, local Maintenance Procedures, and a 
	  Parts List.
		
		A partial Numeric Category List is shown below: 

5805	Wired Communications, Telephones and Telegraphs/Teletypewriters
5810	Scrambler Equipment for above services
5815	Teletype and Data Handling
5820	Ground-based Radios
5821    Aircraft Radios
5825	Ground-based Beacons
5826	Aircraft Navigational Aids
5830    Intercom Sets
5840    Radar
5895    Identification (IFF) Equipment

6115	Power Supplies
6605	Compass Equipment
6615    Helicopter Electronics
6625	Test Equipment
6655    Visual Radiation Equipment
6660	Meteorological Equipment
6665    Atomic Radiation (Radiac) Equipment
6695    Criminology Equipment

6720    Photographic Equipment
6730    Projectors, Still & Movie
6740    Film & Print Processing Equipment
6760    Airfcraft Cameras & Accessories
6780    Photographic Equipment
6940    Training Equipment

7440    Data Processing Equipment
7450    Special Audio Equipment
 
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