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# format auto-updated on access: Mon 27-Nov-2017 11:29:56 +01:00 CREG Journal Contents. (This is a bit-map scan). The November Field Meeting A short introduction to last November's field meeting, by Mike Bedford. CB Transverters - an Attractive Route to Cave Radio? Our attempts to use Ian Drummond's transverters are reported by Mike Bedford, who gives some thoughts on this approach to cave radio. Experiments with VHF Radio in Caves Chris Trayner describes the results of experiments to determine how well VHF radio propagates down cave passages. Earth Return Telephones - is a Good Earth Needed? Mike Bedford and others report on experiments at the field meet and give a design recommendation. FX Pipe Lamp Revisited An update by Nigel Lovell to his earlier article. The Dowsing Welly John Wilcock describes our latest experiments. Driving an Untuned Loop Antenna David Gibson considers the use of untuned loops as an alternative to the more common tuned antenna. Wet & Dry - Engineering a Cave Radio David Gibson takes time out from the subject of waterproofing to discuss more general requirements in this regular series. CB Radios for Expedition Use Mike Bedford gives guidance on selecting equipment and operating practice. Penetration of Magnetic Fields Underground Appendixes to DG's article in the last issue. Ferrite Rods as Transmitting Antennas Following on from consideration of ferrite rods for receiving, David Gibson now investigates their use in transmitting antennas. A Caver Counter A practical design by David Gibson for a device to measure the amount of traffic in caves.