CREG Journal (ISSN 1361-4800)

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Contents of journal 6
December 1991

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CREG Journal Archive:
This issue is available on paper as part of a two-volume archive, covering issues 1 to 25. To purchase it, please visit Lulu.com.

CREG Journal (PDF 2.9MB)        Individual articles may be available below
Contents. (This is a bit-map scan).
 
Field Pattern of a Small Magnetic Dipole
David Gibson presents a computer-generated plot of the near and far-fields and the transition-zone between them. (Front cover diagram).
 
A Guide-Wire Communications System
Dick Glover gives the background to the early development of cave communications equipment.
 
Digestive Biscuits, FX2s and Abseiling
David Gibson muses on biscuits and gravity-powered lighting.
 
Tips for Using Ni-Cd Cells
Brief notes on charging and potting of NiCd cells, by David Gibson.
 
Notes on a Laser Gyrocompass
Can a gyrocompass be used in an electronic surveying instrument? Notes by David Gibson.
 
Accuracy Problems in Ultrasonic and Light-beam Rangefinders
Rangefinders based on 'time-of-flight' measurements may not always be accurate. Notes by David Gibson.
 
Improving Directivity in Ultrasonic Rangefinders
David Gibson explains how a parabolic reflector aids focussing.
 
A Laser Rangefinder
David Gibson outlines the design of a 'time-of-flight' opto-electronic rangefinder.
 
How Big Should a Loop Antenna Be?
Loop antennas do not necessarily need to be large; what is important is the signal/noise ratio. David Gibson investigates.
 
Uniform Survey Data
Stuart France invites a discussion on a standard format for recording survey data.
 
Reviews
Phil Ingham reviews some survey drawing packages and a paper on KIS.
 

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