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Contents of journal 86 June 2014
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- CREG Journal 86 (0-24)
(PDF 12.6MB) Individual articles may be available below
- This issue has a cover date of June 2014 and was published on 28 May 2014.
-
- Front Cover (1)
(PDF 2.5MB)
- Emily Williams demonstrating the ZEB1 handheld laser scanner in KMC Valley Entrance in the Yorkshire Dales. Image: Mike Bedford
-
- Contents (2)
(PDF 522KB)
- List of Contents and masthead information.
-
- Seismic Through-Rock Communication - an Alternative to Electrical Methods (3-6)
(PDF 2.2MB)
- James C. Squire, Gerald A. Sullivan and Elizabeth W. Baker describe their development of a method of sub-surface communication employing seismic waves. Signals have been received from a depth of 271m in a coal mine.
-
- Caver Counting - Why and How (7-11)
(PDF 1.7MB)
- Stuart France presents reasons for monitoring caver activity and explains how to construct and deploy caver counter equipment.
-
- The Strange Tale of James Rogers' Underground Antenna (12-13)
(PDF 588KB)
- In the early days of the radio age, one pioneer claimed that burying the antenna in the ground could improve performance compared to hoisting it in the air. Mike Bedford investigates.
-
- Detecting Lava Tubes with a Smartphone? (14-19)
(PDF 1.9MB)
- Smartphones often include a sensitive magnetometer. Andy Lillington explores their use for detecting magnetic anomalies associated with lava tubes. He also compares the smartphone magnetometer with a sensitive standalone unit.
-
- Letter and Notes (19)
(PDF 311KB)
- Subscription Rates, BCA/BCRA Party Weekend, Letters?
-
- Web Watch (19) For download see previous item
- Some illuminating and highly charged links to explore from Peter Ludwig.
-
- We Hear (20)
(PDF 920KB)
- News and events: Mike Bedford brings us the latest to impact the world of cave radio and electronics, including 3D Batteries, Thingful.net, US Amateur VLF Operation, Backpack Power, QR Code Art.
-
- Handheld Laser Scanning: a Radically New Approach to Cave Surveying (21-24)
(PDF 3.4MB)
- Previously, laser scanners have been used in caving only to scan large chambers. Now, thanks to a newly developed handheld laser scanner, it's possible to produce a full 3D survey of a complete cave system. The process is quick and simple, as 3D Laser Mapping's Emily Williams reports.
-
- The Adventures of GREG (24)
(PDF 1.7MB)
- Illustrations by Adrian Higgins with words by Mike Bedford.
-
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the British Caving Association,
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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