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Contents of journal 42 December 2000
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- CREG Journal
(PDF 10.7MB) Individual articles may be available below
- Contents
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- Highest & Deepest 2000
- In August 2000, teams ascended Mont Blanc and descended the Gouffre Berger and established radio and SSTV communication. Graham Naylor tells the story of this most unusual expedition.
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- Computer Simulation of a Grounded Wire Antenna
- The equations that describe the sub-surface fields due to a wire laid on the surface are complicated, both to define and solve. Reno Lippold explains his implementation of Hill & Wait's equations using the MathCad package. In a commentary, David Gibson suggests how we might interpret these results.
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- Simple Flashbulb Firer
- Flashbulbs are still the professionals' choice for cave photography. This simple circuit by David Gibson allows you to fire flashbulbs manually or with a slave unit.
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- A Prototype DSP- based Bat Detector
- Keith Jackson and Rachel Roberts of the School of Electrical, Communication and Electronic Engineering, University of Plymouth, describe a prototype multi-mode bat detector which was produced as a project for Rachel's degree course. Limited success is reported and suggestions are made for further development.
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- Speleonics
- A regular favourite subject over past years has been the use and design of an electronic rappel? control system. Review by Jeremy Davis.
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- Miniature Dichroic Lamps
- Low voltage tungsten halogen bulbs in a dichroic 35mm envelope are now becoming available. David Gibson reports.
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- A Field Strength Measuring Receiver for LF and HF
- Jean-Jacques Fauchez presents a special-purpose receiver design. Based on notes translated and amplified by John and Rosy Rabson.
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- Web Watch
- Peter Ludwig.
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- Further Reading
- If a topic in this issue interests you, this 'further reading' list from CREG journals, compiled by David Gibson, may be of use.
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- Wet & Dry
- Standard connectors for caving and other caving-related electronics products are discussed. Edited by Richard Rushton.
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- Chairman's & Treasurer's Reports for 1999/2000
- Officers' Reports from our recent AGM are reproduced.
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- The Future is not Orange,... but White
- David Gibson and Stuart France describe the use of white LEDs for caving lamps and attempt to demolish a few myths. This article is the first of a series that will include practical circuits for LED caving lamps.
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- Should we Hang up our Soldering Irons Now?
- Graham Naylor considers the future trends in analogue electronics and suggest that, in the not too distant future, cave radio developers will buy off-the-shelf hardware and develop the required functionality in software alone.
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- Update on Flood Pulse Logger
- Preliminary results of Stuart France's PIC-based flood pulse logging.
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- Letters to the Editor
- Feedback, debate, information & news - our readers have their say.
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