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CREG Newsletter 1
published in Autumn 1988. (This is a bit-map scan).

Magnetometer for Cave Detection
A couple of designs for magnetometers are presented.

The Autohelm
Review of an electronic tape measure which may find application in cave surveying.

AMRAD Cave Radio
Phil Ingham outlines the design of a cave radio based on the Plessey SL1600 series of integrated circuits.

A Cry for Help
Iestyn Walters describes a requirement for hydrological data logging in the Peak/Speedwell system. Information is sought.

Electronic Tape Measures
Graham Christian outlines the requirements for an instrument for cave surveying.

Speleonics
Nick Williams introduces Speleonics, the journal of the Communications & Electronics Section of the NSS.

Sulphation of Lead Acid Batteries
This effect is described and a remedy is given.

A Bibliography of Underground Communications
A bibliography of useful articles is presented by Nick Williams.

Auto Slave Flash
A simple circuit is given.