TM 11-486 Electrical Communications Systems Engineer (1945) article extract photocopy list

TM 11-486 Electrical Communications Systems Engineering (1945)

Military Article Photocopies available from Military/Info

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TM 11-486 Electrical Communications Systems Engineering (25 April 1945); 610 pages, 300+illus. Price 61.00 {Item No.4205}

Chapter 1. General; 4 pages, illus. Price .50 {Item No.4205-1} [Includes: Sections I-III below]

Section I. Purpose and scope; 1 page, illus. Price .50 {Item No.4205-2} [Includes: Purpose, Scope]
Section II. Wire versus ratio; 1 page, illus. Price .50 {Item No.4205-3} [Includes: Main fields of use]
Section III. Telephony verse telegraphy; 2 pages, illus. Price .50 {Item No.4205-4} [Includes: Main characteristics]

Chapter 2. Telephone Systems; 39 pages, illus. Price 4.00 {Item No.4205-5} [Includes: Sections I-VI below]]

Section I. Scope; 1 page, illus. Price .50 {Item No.4205-6} [Includes: Introduction]

Section II. Layout; 4 pages, illus. Price .50 {Item No.4205-7} [Includes: General, Telephone switching plan, telephone transmission plan]

Section III. Telephone station equipment; 8 pages, illus. Price 1.00 {Item No.4205-8} [Includes: General, Local battery telephone, Telephone TP-9-( ), Common battery telephones, Sound powered telephones, Summary of telephone station features, Station wiring plans, Microphones and telephone receivers]

Section IV. Telephone centrals; 20 pages, illus. Price 2.00 {Item No.4205-9} [Includes: Introduction, Typical centrals, Tactical switchboards, Fixed plant switchboards, Dial switchboards, Adapter plugs for interconnecting magneto loops and trunks, Monocord magneto switchboards, Manual cordless switchboards, Cord switchboards, Nonmultiple switchboards, Multiple switchboards, Magneto switchboards, Common battery switchboards - General, Comparison of common battery switchboards with magneto switchboards, Battery supply circuits, Signaling on common battery loops, Common battery cord circuits, Local cord circuits, Universal cord circuits, PBX cord circuits, Two way ringdown trunk circuits, Common battery trunk circuits - outgoing automatic and incoming ringdown, Two way automatic trunk circuits, Voice frequency ringers, Working limits, Distributing frames, Protectors, Power equipment, Monitoring, observing, and recording equipment, Testing and maintenance]

Section V. Aircraft warning systems; 1 page, illus. Price .50 {Item No.4205-10} [Includes: Information and operation centers]

Section VI. Railway train dispatching telephone system; 7 pages, illus. Price 1.00 {Item No.4205-11} [Includes: General, References, Telephone system, Emergency service, Dispatcher's equipment, Way station equipment, Special adjuncts, Optional methods of selector operation, Protection]

Chapter 3. Telegraph systems; 76 pages, illus. Price 8.00 {Item No.4205-12} [Includes: Sections I-X below]

Section I. Wire and radio telegraph systems; 4 pages, illus. Price .50 {Item No.4205-13} [Includes: Major components of telegraph systems and networks, Message handling methods, International Morse code versus teletypewriter operation]

Section II. Wire and radio telegraph transmission; 11 pages, illus. Price 1.00 {Item No.4205-14} [Includes: Transmission, D-c wire telegraph transmission, Multichannel voice frequency carrier wire telegraphy, Speech plus simplex and speech plus duplex systems, Methods of operating radio teletypewriter circuits, Transmission comparison of single channel teletypewriter methods of operation, Transmission comparison of multichannel teletypewriter methods of operation, Radio teletypewriter arrangements; fixed plant and tactical]

Section III. Layout of wire telegraph circuits; 8 pages, illus. Price 1.00 {Item No.4205-15} [Includes: General, Maximum lengths d-c telegraph line sections, Maximum lengths for carrier telegraph line sections, Maximum lengths for telegraph extensions, Maximum distances for manual telegraph on wires, Telegraph transmission coefficients, Application of telegraph coefficients to circuit layouts, Examples of telegraph circuit layout, Emergency layouts based on teletypewriter orientation ranges]

Section IV. Station and signal center equipment; 14 pages, illus. Price 1.50 {Item No.4205-16} [Includes: General, Teletypewriter equipment, Signal center semiautomatic teletypewriter operation, Tactical teletypewriter station equipments, Fixed plant teletypewriter station, and signal center equipments, Signal center teletypewriter equipment used with Radio Teletype Terminal Equipment AN/FGC-1, Teletypewriter line units and d-c telegraph repeaters, Teletypewriter power auxiliaries and teletypewriter supplies, Manual telegraph sets, Automatic keying and recording equipment]

Section V. Telegraph line transmission equipment; 9 pages, illus. Price 1.00 {Item No.4205-17} [Includes: General, Carrier telegraph equipment, Speech plus duplex system using telegraph terminal TH-1/TCC-1, D-c telegraph repeaters, D-c regenerative telegraph repeater, Use of d-c regenerative telegraph repeaters with tactical equipment]

Section VI. Telegraph switchboards; 4 pages, illus. Price .50 {Item No.4205-18} [Includes: Switchboard BD-100, Group operation of Switchboards BD-100, Telegraph switchboard SB-6/GG]

Section VII. Radio teletypewriter systems and circuits; 12 pages, illus. Price 1.50 {Item No.4205-19} [Includes: General, Fixed plant equipment used in radio teletypewriter systems, signal channel and multichannel, Multichannel radio teletypewriter arrangements for tactical use, Single channel radio teletypewriter arrangements for tactical use, Arrangements for tactical c-w teletypewriter operation, Arrangements for tactical single tone modulation operation, Arrangements for tactical 2-tone modulation operation, Arrangements for tactical frequency shift operation]

Section VIII. Telegraph testing equipment; 3 pages, illus. Price .50 {Item No.4205-20} [Includes: Polar relay test sets, Telegraph transmission test sets]

Section IX. Interoperation of British and American telegraph apparatus; 3 pages, illus. Price .50 {Item No.4205-21} [Includes: Interoperation of teletypewriters using 2 path polar or carrier line facilities, Interoperation of telegraph terminals (speech plus duplex), Telegraph Terminal CF-2-A, CF-2-B, or CF-6 connected to apparatus terminal carrier telephone (1+4), Tabulation of British Army telegraph apparatus]

Section X. Telegraph publications; 7 pages, illus. Price 1.00 {Item No.4205-22} [Includes: Reference list]

Chapter 4. Facsimile systems; 9 pages, illus. Price 1.00 {Item No.4205-23} [Includes: Sections I-IV below]

Section I. General description; 5 pages, illus. Price .50 {Item No.4205-24} [Includes: Introduction, Page facsimile, Tape facsimile]

Section II. Transmission medium; 3 pages, illus. Price .50 {Item No.4205-25} [Includes: General, Wire lines, Radio circuits, Privacy in transmission medium]

Section III. Facimile text transmission compared to other forms of communication; 3 pages, illus. Price .50 {Item No.4205-26} [Includes: Elements of comparison, Conclusions on transmisison of text]

Section IV. Processes related to facsimile; 2 pages, illus. Price .50 {Item No.4205-27} [Includes: General, Facsimile printer, Telautograph]

Chapter 5. Voice-frequency and carrier telephony over wires; 88 pages, illus. Price 9.00 {Item No.4205-28} [Includes: Sections I-VII below]

Section I. Scope; 1 page, illus. Price .50 {Item No.4205-29} [Includes: Inroduction]

Section II. Types of wires; 3 pages, illus. Price .50 {Item No.4205-30} [Includes: General, Rubber covered wires and cables, Spaced aerial pairs, Open wire lines, Lead covered land cables, Submarine cables]

Section III. Types of equipment; 1 page, illus. Price .50 {Item No.4205-31} [Includes: Tactical and fixed plant]

Section IV. Types of circuits; 25 pages, illus. Price 3.00 {Item No.4205-32} [Includes: General, Balanced and grounded circuits, Phantom circuits, Nonloaded and loaded circuits, Nonrepeatered voice frequency circuits, Repeatered voice frequency circuits, Two wire versus 4 wire circuits, Portable repeaters, Telephone TP-9, Packaged voice frequency repeater, Comparision of repeatered and nonrepeatered circuit lengths, Carrier systems, general, Tactical carrier systems, Spiral four carrier system, Carrier hybrid system, Pair per system operation of Telephone Terminals CF-1-( ), Open wire converter system, Fixed plant carrier systems, Type H system, Type C systems, Signaling, System coordination on open wire lines, Cable in open wire lines, Dropping circuits on carrier pairs, Circuits in tandem, Frequency allocations of carrier systems]

Section V. Transmission data; 19 pages, illus. Price 2.00 {Item No.4205-33} [Includes: General, Attenuation and impedance, Bridging losses, Loss of cables inserted in open wire lines, Equipment losses, Transmission ranges for nonrepeated voice frequency circuits, Transmission ranges for repeated voice frequency circuits, Voice frequency lead covered cables, Carrier repeater section lengths, Tabular data, Lengths of entrance and intermediate cables, Repeater gains on voice frequency circuits]

Section VI. Crosstalk; 27 pages, illus. Price 3.00 {Item No.4205-34} [Includes: Introduction, Terminology, Crosstalk standards, Crosstalk amplification, Transposition theory, Transposition types, New open wire lines, U.S.Army line normal transposition sections, U.S.Army line short sections, U.S.Army line transposition pole and wire spacing deviations, U.S.Army line arrangements for joint entrance of two lines, Use of 10 foot crossarm, British Army lines, Different lines of tandem, Existing line, Crosstalk in entrance and intermediate cables, Combination of crosstalk losses, Improvised methods of measuring crosstalk]

Section VII. Rehabilitation of captured long distance cable circuits; 13 pages, illus. Price 1.50 {Item No.4205-35} [Includes: General, Four wire operation, Segregation for 4 wire operation, Capacitance unbalance, Loading considerations 4 wire circuits, Two wire circuits, Loading systems and apparatus, Identifying loaded circuits, Telegraph operation]

Chapters 6. Radio system; 163 pages, illus. Price 17.00 {Item No.4205-36} [Includes: Sections I-VIII]

Section I. General factors; 4 pages, illus. Price .50 {Item No.4205-37} [Includes: Scope, General, General types of facilities, Choice of frequency band, Factors pertaining to use of frequency modulation and amplitude modulation for telephony, Reliability considerations]

Section II. V-h-f transmission; 26 pages, illus. Price 3.00 {Item No.4205-38} [Includes: General, Operational advantages of vhf, Factors affecting vhf transmission, Vhf transmission range generally experienced, Propagation of vhf radio waves, Typical vhf distance ranges in flat country, Typical vhf distance ranges over sea water, Required vhf field intensities, Method for estimating received field intensities antennas at moderate elevations, Correction factors for use with figures 6-14 to 6-17, Vhf transmission with antennas at great elevations, Vhf antenna siting. Polarization, Miscellaneous transmission considerations, Single channel automatic and manual radio waves relays at extend the vhf distance range, Multichannel systems]

Section III. V-h-f antennas; 19 pages, illus. Price 2.00 {Item No.4205-39} [Includes: General, Advantages of directional antennas, Tactical vhf antennas, Whip antennas, Half wave dipple antenna, Vertical coaxial antenna, Vertical "J" antenna, Ground plane antennas, Flexible dipole antennas, Three element directional array, Vertical half rhombic antenna (inverted vee), Full rhombic antennas, Half wave dipole antenna with corner reflector, Improvised anti interference antenna, Antenna dimensional data, Antenna rf transmission lines]

Section IV. H-f transmission; 31 pages, illus. Price 3.00 {Item No.4205-40} [Includes: General, Comparision of hf and vhf transmission, Sky wave transmission general, Field of use of ground wave and sky wave transmission, Choice of frequencies for sky wave transmission, Estimating ground wave transmission ranges and sky wave performance, Calculation of ground wave and sky wave transmission performance, Ground wave signal field intensities, Ground wave distance range versus radiated power for specific noise conditions, Sky wave signal intensities, Determination of radiated power, Power corrections for whip antennas, Power corrections for a half wave horizontal antenna, Receiving antenna pattern corrections, Performance estimates, Radio noise reduction at receiving locations, Long distance reliability curve, Fixed plant radio set]
Section V. H-f antennas; 27 pages, illus. Price 3.00 {Item No.4205-41} [Includes: General, Whip antenna, Inverted L antenna, Sloping wire antenna, Half wave horizontal antennas, Improvised center fed half wave antennas, Improvised end fed half wave antennas, Sample values of relative antenna efficiency, Wave antenna (Beverage antenna), On ground antennas, Full wave horizontal wire, Balloon supported half rhombic (inverted vee), Hf fixed plant antennas general, Horizontal rhombic antennas, Double doublet receiving antenna, Transmitting doublet antenna (delta matched), Antennas for frequencies below 800 kc, Space diversity antenna systems, Antenna parks, Radio frequency transmission lines, Phantom antennas]

Section VI. Mutual interference between radio sets; 9 pages, illus. Price 1.00 {Item No.4205-42} [Includes: General, Transmitter to receiver interference, Spurious transmitter outputs, Spurious receiver outputs, Spurious receiver responses, Location of spurious response frequencies in a simple superheterodyne receiver, Location of responses in a superheterodyne receiver having two mixers, Spurious receiver responses due to heterodyning of two r-f frequencies, Spurious transmission output caused by cross modulation between two transmitters]

Section VII. Remote control of tactical radio sets; 10 pages, illus. Price 1.00 {Item No.4205-43} [Includes: General description of remote control equipments, Radio systems with remote control equipments, Push to talk operations, Voice transmission over wire lines between remote points and radio sets, Typical remote control equipments, Improvised remote control arrangements]

Section VIII. Radio set technical and descriptive information; 29 pages, illus. Price 3.00 {Item No.4205-44} [Includes: Radio set]

Chapter 7. Power; 16 pages, illus. Price 2.00 {Item No.4205-45} [Includes: Sections I-IV below]

Section I Power supplies; 1 page, illus. Price .50 {Item No.4205-46} [Includes: General, Commerical power]

Section II. Batteries; 3 pages, illus. Price .50 {Item No.4205-47} [Includes: Dry batteries, Lead storage batteries]

Section III. Power equipment; 7 pages, illus. Price 1.00 {Item No.4205-48} [Includes: Transformers, Rectifiers, Power panels, Power ringing units, Improvised manual voltage regulator]

Section IV. Engine-driven generators; 6 pages, illus. Price .50 {Item No.4205-49} [Includes: Types and capacities, Application, Installation, Noise reduction, Use of leaded gasoline, Effect of power factor on generator output]

Chapter 8. Foreign civil central offices; 24 pages, illus. Price 3.00 {Item No.4205-50} [Includes: Sections I-III below]

Section I. Interconnection of Army centrals and civil central offices; 3 pages, illus. Price .50 {Item No.4205-51} [Includes: General, Types of interconnection, Feasibility of interconnection, General suitablity of foreign central office, Planning interconnection, Type of equipment required at Signal Corps end, Commercial central office termination of Signal Corps lines or trunks]

Section II. Technical problems; 5 pages, illus. Price .50 {Item No.4205-52} [Includes: Transmission problems, Signaling ranges, Signal problems magneto (LB) offices, Signal problems central battery signaling (CBS) manual offices, Signal problems common battery (CB) manual offices, Signaling problems dial offices, Dial number plates, PBX battery and generator feeders, Timed cut off of conversations, Principle local switching systems possible interconnection trouble]

Section III. Principal foreign local switching systems; 14 pages, illus. Price 2.00 {Item No.4205-53} [Includes: General, Magneto (local battery) (LB) manual switchboards, Central battery signaling (CBS or BCS) manual switchboards, Common battery (CB) manual switchboards, Rotary power driven dial system, Ericsson power driven dial system, Step by step dial systems, R-6 dial system (Thomson-Houston system), Hasler dial system, Merck Fallwaehier dial system (drop selector), Demiautomatic system (D system), Semiautomatic dial systems (automatic system), All relay dial system, Magneto remote control dial system, Common battery remote control dial system, Swedish crossbar systems]

Chapter 9. Outside plant; 28 pages, illus. Price 3.00 {Item No.4205-54} [Includes: Sections I-VI below]

Section I. Introduction; 1 page, illus. Price .50 {Item No.4205-55} [Includes: Introduction]

Section II. Planning; 2 pages, illus. Price .50 {Item No.4205-56} [Includes: General, Surveying and staking line, Material considerations, Organizing construction]

Section III. Construction; 20 pages, illus. Price 2.00 {Item No.4205-57} [Includes: Storm loading, Selection of poles, Conductor sages and wire spacings, Rubber convered wires general, Single pair wires, Multiple rubber covered cables, Open wire lines, British multi airline (MAL), Comparison of wire sizes, Lead covered cables, Submarine cables]

Section IV. Rehabilitation of captured plant; 1 page, illus. Price .50 {Item No.4205-58} [Includes: Rehabilitation of open wire plant, Rehabilitation of toll cable plant, Repairing cables]

Section V. Recovery and reconditioning plant; 1 page, illus. Price .50 {Item No.4205-59} [Includes: General, Aerial plant, Underground plant]

Section VI. Construction of a jungle line; 4 pages, illus. Price .50 {Item No.4205-60} [Includes: General, Jungle effects, Open wire construction, Tree slung construction, Use of insulated wire in jungle]

Chapter 10. Electrical protection; 8 pages, illus. Price 1.00 {Item No.4205-61} [Includes: Purpose of protection, Extent required, Protectors, Protection of switchboard equipment, Protection of telephones, Location of protectors for switchboards and telephones, Illustrative examples, Protector drainage, Protection of cables, Protection at radio stations, Grounding, Special applications of protection, Earth resistivity]
Chapter 11. Technical administration; 94 pages, illus. Price 10.00 {Item No.4205-62} [Includes: Sections I-XII below]

Section I. Introduction; 1 page, illus. Price .50 {Item No.4205-63} [Includes: General, Theater experience, Planning a communication system]

Section II. Technical functions; 2 pages, illus. Price .50 {Item No.4205-64} [Includes: General, Functions]

Section III. Telephone traffic management; 8 pages, illus. Price 1.00 {Item No.4205-65} [Includes: Telephone central work, Telephone central management, Telephone switchboard operation, Telephone directories, Traffic counts and observations]

Section IV. Telephone traffic engineering; 12 pages, illus. Price 2.00 {Item No.4205-66} [Includes: General, Traffic experience data, Choice of switchboards, Telephone switchboard position requirements, Telephone trunk circuits requirements, Radio telephone trunk circuit traffic capacity, Telephone switchboard requirement check list]

Section V. Telegraph traffic management; 9 pages, illus. Price 1.00 {Item No.4205-67} [Includes: General, Types of service, Signal center traffic management, Locator system, Teletypewriter network message handling methods and operation, Teletypewriter centrals and associated stations operation and management, Typical signal center layout with associated facilities, Typical wire and radio networks]

Section VI. Telegraph traffic engineering; 4 pages, illus. Price .50 {Item No.4205-68} [Includes: General, Traffic experience data, point to point circuits, Trunk circuit requirements, point to point service, Teletypewriter switchboard position requirements, Trunk circuit requirements, switched service]

Section VII. Local cable plant engineering; 4 pages, illus. Price .50 {Item No.4205-69} [Includes: Introduction, Necessary records, Cable sizes and gauge, Size and location of terminals, Cable multipling, Cable congestion and relief]

Section VIII. Trunk plant engineering; 12 pages, illus. Price 2.00 {Item No.4205-70} [Includes: General, Information required, Selection and layout of circuits, Circuit designations, Circuit records, preparation, distribution and maintenance, Computations for record card voice frequency repeatered circuit]

Section IX. Circuit assignment work; 4 pages, illus. Price .50 {Item No.4205-71} [Includes: General, Centralized circuit assignment offices, Long distance wire circuit orders general, Circuit order details, Circuit orders for packaged carrier equipment]

Section X. Installation; 23 pages, illus. Price 3.00 {Item No.4205-72} [Includes: General, Telephone station installation, Telephone central installation, Carrier equipment installation, Installation of teletypewriter sets, Teletypewriter central installation, Telegraph and teletypewriter equipment installation, Mobile installations]

Section XI. Maintenance; 3 pages, illus. Price .50 {Item No.4205-73} [Includes: General, Preventive maintenance, Corrective maintenance, Service order work, Maintenance objectives and personnel requirements, Trouble reporting general, Trouble recording, Periodical summary of trouble reports, Testing and clearing trouble, Power plant maintenance, Radio maintenance, Maintenance tools and test sets]

Section XII. Effects of climate; 3 pages, illus. Price .50 {Item No.4205-74} [Includes: Possible world wide usage, Temperature effects, Wetting humidity and related effects, Moistureproofing and fungiproofing, Other preventive and remedial measures]

Chapter 12. Transmission yardsticks; 20 pages, illus. Price 2.00 {Item No.4205-75} [Includes: Purpose, Power ranges in communication systems, The decibel (db), Use of the db in expressing transmission losses and gains, Standard testing power, Transmission level and net loss, Relation between db and voltage or current ratios, The neper, Measurement of power in transmission speech, the volume unit (vu), Crosstalk, Noise, Noise in the air, Radio R and S scales, Radio field intensity, Antenna effective height and antenna gain, Impedance matching, Reflective loss, Repeater loss, Repeater balance, Sidetone, Insertion loss, Important factors in telegraph transmission, Telegraph signal distortion, Telegraph transmission coefficients, Telegraph transmission measurement, Measurement by teletypewriter]
Appendix. List of publications; 4 pages, illus. Price .50 {Item No.4205-76}
Index; 34 pages Price 3.00 {Item No.4205-77}

Note: We also sell photocopies of this manual's companion book TM 11-487 Electrical Communication Systems Equipment (2 October 1944); 518 pages, 1544 illus. Price 52.00 {Item No.4206}
as well as many other photocopies, on vintage military communication and electronics, on our Communications webpage.

Note: This website has over 500 webpages, with over 11,000 military titles available, organized into over 200 subject headings, covering a period of over 200 years, collected over 50 years. This website is designed to be browsed so you can discover interesting documents which don't know even existed.

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