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Contents of journal 3
Spring 1989
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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 Newsletter 3
(PDF 2.8MB)
  Individual articles may be available below
- published in Spring 1989. (This is a bit-map scan).
-
- Bosch Drills
- The application of Bosch electric drills to caving by Ben Bentham.
-
- Number of Turns has no Effect on Loop Antenna Performance
- David Gibson derives an expression for the performance of a loop antenna and demonstrates that the number of turns is not a contributing factor.
-
- Dryfit Battery Charger
- Rick Platt presents the circuit for a Dryfit battery charger.
-
- Circuit Ideas - Ultrasonic Rangefinding
- A simple circuit based on the Plessey TBA120S is given.
-
- Software Listing
- A BASIC program listing of software for calculating the output frequency of an LC oscillator is provided.
-
- Review - Speleonics 11
- Nick Williams reviews the latest issue of the American cave radio & electronics magazine.
-
- Feedback
- David Gibson provides some feedback on a letter about LEDs for distance measuring in issue 2.
-
- Terminations for Ribbon Aerials
- Some practical tips by David Gibson.
-
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BCRA is a UK registered charity and is a constituent body of
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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