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NUMERICAL INDEX
TF No.
11-1385 Technical Principles of Radar— Part I— Introduction
Basic theory — Nomenclature— Types — Detoctiun-search aircraft warning, homing, and navigational aid — PPI — Solving problems with radar (22 min — 1945 — Film Reference). 11-1386 Technical Principles of Radar— Part II— Mechanics
Mechanical comijonents producing electrical pulse that detects enemy targets (22 min — 1945 — Film Reference).
11-1387 Technical Principles of Radar— Part III— Indicators
Cathode-ray tubes — Typo A and plan position indicator — Components of the scope — Formation of visible dot on fluorescent screen — Base line — Pip (45 min — 1946 — Film Reference). 11-1397 Facsimile Equipment RC-120— Part I— Theory and Description
Transmitting and receiving facsimile copies of photographs, messages, diagrams, and maps (20 min — 1944 — Film Reference).
11-1420 Radar AntiJamming for the Radar Operator — Part I — Receiver
Adjustments(U) (29 min— 1945— Film is classified CONFIDENTIAL). 11-1421 Radar AntiJamming for the Radar Operator— Part II — Recognition of Electronic Jamming (U) (28 min— 1945— Film is classified CONFIDENTIAL).
11-1422 Radar AntiJamming for the Radar Operator — Part III — Window (U)
(32 min— 1945— Film is classified CONFIDENTIAL).
11-1425 Preventive Maintenance Practices for Ground Signal Equipment
Preventive maintenance at depots, in transport, and in use — FITCAL system of maintenance — Precautions against fungus growth, dust, heat, and humidity (19 min — 1945 — Film Reference).
11-1553 Basic Telephony
Operating principles — Schematic and wiring diagrams — Four circuits— Transmitter (primarjO, receiver (secondary), generator, and ringer (20 min — 1949 — Film Reference).
11-1555 Multiple Switchboards — Installation and Operation
Organization of typical field armj"^ — Telephones and switchboards used from forward observation posts to army headquarters — Advantages of multiple switchboards over interposition trunking of switchboards— Operation — Tactical use, advantages and traffic capacity of common and local battery systems (24 min — 1949 — Film Reference).
11-1567 Microwave Oscillators
Magnetron and klystron oscillators for radar system able to operate in microwave region — Theory of operation (18 min — 1949 — Film Reference) .
11-1572 Film Tactics
Motion pictures as training aid — Preparation by instructor-^ Ventilation of classroom — Introductory remarks — Discussion after showing — Final examination (23 min — 1949 — Film Reference).
11-1574 The Technique of Good Projection
Selection and training of personnel for projection work — Projection of 16-mm film (36 min— 1950 — Film Reference). 11-1632 The Effects of the Ionosphere on Radio Wave Propagation
Theory of ionization — Relationship of ionosphere to radio wave
397