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AP3302 Pt3

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AP 3302 Pt. 3

FOREWORD

1. This Air Publication has been prepared by Headquarters Training Command (Ed 1c) under the direction of the Ministry of Defence, Directorate of Training (Ground) (Royal Air Force).

2. It is published to assist those under training as fitters in the Electronic Engineering Trade Group. Fitters in this trade group require a thorough knowledge of the electrical, instrument, and radio principles appropriate to the theory of the specified equipment. It is with the intention of helping to attain this standard that this publication is written. It is not intended to form a complete textbook, but is to be used as required in conjunction with lessons and demonstrations given at the training school. It may also be used to assist airmen on continuation training at other RAF stations.

3. The AP 3302 series of Air Publications is sub-divided as follows:

Part lA: Electrical and Radio Fundamentals. This deals with the principles of electricity, electronics, and radio at a level suitable for electronic technicians. Because of its bulk, Part lA has been split into three separate books: Book 1, basic electricity; Book 2, basic electronics; and Book 3, basic radio.

Part lB: Basic Electricity and Radio. This deals with the principles of electricity, electronics, and radio at a level suitable for electronic fitters.

Part 2: Communications. This deals with the applications of the principles covered in Parts lA and lB to communication systems and is intended to be used as required by electronic technicians and fitters.

Part 3: Radar. This deals with the applications of the principles covered in Parts lA and lB to radar and is intended to be used as required by electronic technicians and fitters.

Part 4: Navigation Instruments. This deals with the applications of the principles covered in Parts lA and lB to aircraft navigation instruments and is intended to be used as required by electronic technicians and fitters.

4. In general, fitters employed on communications equipment will be interested mainly in Part 1 B and Part 2 of these notes; radar fitters will be concerned mainly with Part 1 B and Part 3; and fitters (nav. inst.) will be interested mainly in Part 1 B and Part 4. However, it is difficult to draw a firm dividing line between the knowledge required by electronic fitters in the various fields. There is considerable overlapping; for example, much of what was once regarded as being exclusively in the province of the radar fitter is now a requirement for the communications fitter also, and vice versa. thus those under training in the radar field may find much that is useful in Parts 2 and 4 as well as in Part 3; communications fitters may find much of interest in Part 3 as well as in Part 2; and fitters (nav. inst.) may require information on radar navigational systems as given in Part 3, in addition to the instrument systems covered in Part 4.

5. The notes deal with the basic theory and the applied principles of the various subjects in a general way. They do not cover specific details of equipment in use in the RAF. Such details are to be found in the official Air Publication for the equipment and this should always be consulted during the servicing of the equipment.

6. The subject matter in this publication may be affected by the contents of Defence Council Instructions and by amendments to other official publications. Where this occurs, suitable amendment lists will be issued as soon as practicable. In the meantime, any mandatory document that contradicts information contained in this publication is to be taken as the over-riding authority.

7. The material used in this publication has been gathered from numerous sources, both Service and civilian. An acknowledgement is extended to all who have contributed to its presentation.

8. Unauthorized alterations are not to be made to this book and, since some of the material may be subject to copyright, no reproduction of its contents, in whole or in part, is to be made without the prior permission of Headquarters Training Command.

9. Readers of this publication are asked to report any unsatisfactory features that they may notice. Such unsatisfactory features may include omissions, factual errors in words or illustra-tions, and ambiguous, obscure, or conflicting instructions. All such unsatisfactory features should be reported to Headquarters Training Command (Ed lc) on RAF Form 6734.

Ministry of Defence (Air)
November, 1971


 

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ęCopyright 2000 Dick Barrett

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