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# format auto-updated on access: Mon 27-Nov-2017 11:29:49 +01:00 CREG Journal Contents. (This is a bit-map scan). Update - Type Approval of Modules David Gibson reports on the latest from the Radiocommunications Agency. Literature Received The Design of Broadband VLF Receivers, an Italian article on bat detectors and a French article about an electronic clinometer with laser pointer. The Autumn Field Meeting A report by Guy Tomlinson. Review - Underground Photographer Mike Bedford reviews our publication on cave photography. Electronic Aids for Photographers David Gibson reports on a discussion held at the Autumn 95 CREG field meeting. An Improved Circuit for Firing Flashbulbs David Gibson's design allows slaves to be used more reliably with flashbulbs, and provides an indication that the flashbulb is correctly seated. The Mogannwg Lamp Practical design for a low-cost lamp by Kevin Munn. Cave Radio Design - 27kHz FM Constructional details of a 27kHz FM cave radio by Stuart France. Radio in a Box Kym ap Rhys describes experiments with professional VHF hand-helds underground. A Slave for RALF: part 2 Some further notes on construction, by David Gibson. Optimal Charging of NiCd Cells Mike Bedford investigates fast charging of NiCds and outlines the concept of optimal charging. Earth Current / Induction Field Experiments part 4 Rob Gill describes work with circular polarisation. Cheap LED Emergency Flashlight Brian Pease describes how high-brightness LEDs can be used for illumination. Mike Bedford lists some UK sources. Design Considerations for Caver Pagers Chris Trayner describes the concept of caver pagers. Progress on Caver Pagers Chris Trayner introduces four projects on caver pagers. The students then outline their progress to date. The G3TDZ Loop Following construction details of the transceiver in the last Journal, John Hey gives loop details. 3496Hz Beacon Transmitter & Loop Brian Pease provides constructional details of a 3496kHz beacon for radio location. Electronics in Cave Surveying David Gibson reviews the uses of electronic instrumentation for surveying and navigation in caves. Review: Electronic Compass Modules David Gibson lists a range of components and modules useful for the design of electronic compass / clinometers.