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Contents of journal 17
September 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 8.2MB)
  Individual articles may be available below
- Contents. (This is a bit-map scan).
-
- The South Wales Field Meeting
- Stuart France introduces the theme of Journal 17 - the recent field meeting in South Wales.
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- VHF/UHF Radio in Ogof Ffynnon Ddu
- Results of the latest experiments, described by John Rabson.
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- The Greensites Resistivity Meter
- Following his demonstration at the field meeting, Neil Weymouth describes his rig for mapping caves by earth resistance tomography.
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- Earth Return Telephones - Is a Good Connection Needed?
- Steve Laugher and Nigel Lovell describe some experiments carried out at the field meeting and makes some practical suggestions.
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- GB4CRO - The World's First Underground Amateur Radio Station
- Jack Procter describes how a group of radio amateurs set up a station in White Scar Cave.
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- An Introduction to Earth current Communication
- David Gibson provides some theory to back up Steve Clark's article in Journal 16.
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- An Ergonomic Loop Antenna
- Mike Bedford describes the mechanical design for a more user friendly loop, and encourages designers to consider such issues in next generation cave radios.
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- Ferrite Rods as Transmitting Antennas
- Part 2 of David Gibson's series, held over from Journal 16.
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- Transverter Modifications for UK's CB 27/81 CB Rigs
- Ian Drummond describes how to modify his cave radio transverters to work with British CBs.
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- A Radio Locator for the Trogbox
- Chris Trayner describes a simple device to aid the location of monitoring/data-logging equipment which may have been left underground.
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- Forthcoming Changes to Induction Radio Licence Specifications
- David Gibson describes the new ETSI 300 330 specification.
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- A 200J Flashgun
- David Gibson describes his experimental 200J flashgun and discusses the features that could be incorporated into a finished product.
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Click here for further information.
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