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Contents of journal 16
June 1994
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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 7.7MB)
  Individual articles may be available below
- Contents. (This is a bit-map scan).
-
- A Toroidal Loop Antenna
- Part 2 of David Gibson's series on driving an untuned loop antenna.
-
- The Trogbox
- Chris Trayner describes a general purpose housing for use with electronic equipment underground.
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- Water Tracing with VLF Radio
- Is it possible to design a VLF radio which can be dropped into a sump and tracked from the surface? David Gibson shows how the theory is applied to this problem.
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- Locating Cavities Using Microgravity Techniques
- David Gibson reviews an article in Mine & Quarry.
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- A More Accurate Dipole Field Pattern
- David Gibson suggests that previously published field patterns have been misleading and presents the new improved version.
-
- AM Radio Reception in Caves
- A review of a discussion which appeared in The Texas Caver. Review by David Gibson.
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- Single and 2-wire Phones on the Same Cable
- Nigel Lovell responds to a letter on this subject by reference to his own recent design.
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- Questionnaire for Rescue Groups
- Mike Bedford reports on requirements for new cave radio equipment.
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- Accuracy of Ultrasonic & Optical Rangefinders
- Henry Lyall comments on David Gibson's article in Journal 6.
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- Alkaline Cell Failure
- David Gibson reviews and expands on an article in Speleonics 17.
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- Earth Current Signalling in White Scar
- Steve Clark shows how this neglected technique can produce some impressive results.
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- The Caves of Thunder Radios
- Gavin Newman shows how CB radios were taken apart and rebuilt inside helmets to give hands-free communication on an expedition to Irian Jaya.
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- Wet & Dry
- In our regular column on making equipment cave-proof, David Gibson explains some of the thoughts behind his choice of components for his 2-way earth return telephone.
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- A High Performance Flashgun Slave
- An update on David Gibson's design.
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undertaking charitable activities on behalf of the BCA.
BCRA publishes a range of periodicals and books.
Click here for further information.
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