This file is not intended to be read by humans. Please go to the formatted index

# format auto-updated on access: Mon 27-Nov-2017 11:29:35 +01:00

CREG Journal
Contents

Introducing a New Cave Radio for Rescue Use
Mike Bedford provides background information on the new cave radio which is about to be issued to the UK's rescue teams.

A New Rescue Radio - the Electronic Design
The British Cave Rescue Council (BCRC) is about to issue new cave radios to the UK's rescue teams. Electronic designer John Hey provides details of the circuit and the PCBs.

The Cave Radio Road Show
Pete Allwright has been conducting field tests of the new BCRC rescue radio with the UK's rescue teams. Here he collates the results to date.

Speleonics
Optimum frequency for cave radios, and hot & cold cathode lamps are among the subjects discussed over the last six months. Jeremy Davis reviews the postings.

Measuring L, C, Q & Resonance
Jean-Jacques Fauchez describes a practical method for measuring L, C, Q & resonance. Translation by John Rabson.

Tough Stuff - Investigating Rugged & Waterproof Equipment
Mike Bedford takes a look at some of the ruggedised electronic equipment which is available on the general market.

Wet & Dry
A specification for 'cave-qualified' electronic equipment would be an aid to designers and builders. Richard Rushton summarises some discussions.

Web Watch
David Gibson explains how to avoid web-site-published e-mail addresses giving rise to junk e-mail.

Further Reading
If a topic in this issue interests you, this 'further reading' list from CREG journals, compiled by David Gibson, may be of use.

Raynet: A Resource for Rescue Teams
Raynet is the Radio Amateurs' Emergency Network. Chris Trayner describes what Raynet can offer and how this might be of value to cave rescue teams.

The Millennium Photo Meet
Richard Rushton describes events at our field meeting, dedicated to cave photography and video, which took place in June.

A Channel Sounder for Sub-Surface Communications Part 2 - Computer Simulation of a Small Buried Loop
Channel-sounders are used to test radio-wave propagation in a specified band, often the short-wave (HF) or one of the UHF cell-phone bands. In this series of articles, David Gibson describes a new design of sounder that operates from 0 - 200kHz with a wide-band induction loop antenna. The sounder can also be used as a spectrum analyser, and is intended to be part of a wideband adaptive digital communications system.

Letters to the Editor
Subjects include: Ultrasonic Microphones, DSP Analysis of Bat Calls, Antennas (plural) - Official!, 28MHz Rigs & Ian Drummond's Transverter, a LORAN Filter?, PSK31, 73kHz Amateur Allocation.