Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering

Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering

Online ISSN 2054-0604
Print ISSN 0367-7540

Published from 1945-1948, the Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering included all specialized papers on radio and communication engineering that were presented to the Institution. Also included were the formal proceedings of the Radio Section of the Institution and the papers which were read before that Section, together with discussions on them.

This journal was previously known as Journal of the Institution of Electrical Engineers - Part III: Communication Engineering 1941-1944. ISSN 2050-2605. more..

This publication is continued by Proceedings of the IEE - Part III: Radio and Communication Engineering 1949-1954. ISSN 0369-8947. more..

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Range of low-power radiocommunication
- Author(s): M.V. Callendar
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- p. 425 –435 (11)
  The data available for calculating the ground-ray field are summarized and used as a basis for estimating the maximum range of communication for any given practical conditions. Particular attention is given to low-power (e.g. portable) transmitters with short aerials, and to the way in which the range of communication varies with wavelength and with the aerial used.Sky-wave communication is not treated, since it cannot normally be relied upon with the very low radiated powers (1 watt or less) primarily considered in the paper. Centimetre waves also are not covered: the range is here principally dependent upon the permissible aerial directivity, and many of the problems involved are of a some what different nature from those dealt with in the paper.Simplified field-strength formulae of general application are derived from the work of Burrows² and Norton.³ Curves are given for the distance at which the field from a 1-watt transmitter falls to a given value for wavelengths from 0.5 m to 2000 m and aerial heights up to 15000 ft.An analysis of the ratio of power radiated to total power available gives the reduction in field from the transmitter when short aerials are used. The minimum field required at the receiver for intelligible communication is considered, and curves are then drawn for the range of communication.Practical rules are given for estimating ground-ray range for low-power sets.
Discussion on “Some aspects of the design of balanced rectifier modulators for precision applications”
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- p. 436 (1)
Some principles underlying the design of aerial systems for high-frequency radio direction-finders in H.M. ships
- Author(s): C. Crampton ; W. Struszynski ; S. de Walden ; P.G. Redgment
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- p. 437 –453 (17)
  The paper deals with the design of direction-finding aerial systems to cover the whole of the h.f. band, to work on the ground wave and to meet the conditions peculiar to H.M. ships. The special problems encountered are intimately connected with the siting of the d.f. aerial. The aerial must be fitted to the top of a mast, and often at a considerable distance from the receiving compartment.The most satisfactory design of d.f. aerial to meet these conditions consists of two fixed crossed loops with an incorporated sense aerial, and a network for injecting test signals into the d.f. and sense-aerial circuits. The aerial system must be connected to the receiving apparatus by means of transmission lines which may be of considerable length.The paper describes the special problems experienced in achieving satisfactory performance in sensitivity, bearing accuracy and resolution of sense ambiguity, the compromises in design that have to be adopted and the performance figures obtained.
Discussion on “Some developments in commercial point-to-point radiotelegraphy” and “Carrier-frequency-sheet telegraphy”
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- p. 454 –457 (4)
The authors' replies to the discussion on “Some developments in commercial point-to-point radiotelegraphy” and “Carrier-frequency-sheet telegraphy”
- Author(s): J.A. Smale ; R. Ruddlesden ; E. Forster ; Z. Jelonek
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- p. 457 –458 (2)

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Journal of the Institution of Electrical Engineers - Part III: Radio and Communication Engineering

Volumes & issues:

Volume 95 (1948)

Volume 94 (1947)

Volume 93 (1946)

Volume 92 (1945)

Latest content

Range of low-power radiocommunication

Discussion on “Some aspects of the design of balanced rectifier modulators for precision applications”

Some principles underlying the design of aerial systems for high-frequency radio direction-finders in H.M. ships

Discussion on “Some developments in commercial point-to-point radiotelegraphy” and “Carrier-frequency-sheet telegraphy”

The authors' replies to the discussion on “Some developments in commercial point-to-point radiotelegraphy” and “Carrier-frequency-sheet telegraphy”

Most viewed content for this Journal

Most cited content for this Journal