It has a 5inch long magnetic field antenna probe with
about 5 metres of cable from the receiver for orientating
and positioning well away from any houshold 50/60hz
electricity/mains supply hum, I find most natural earth
signals can be best heard between dusk & dawn and there
seems to be most activity in high weather pressures.
The rate of chirps,tweeks,pops & fizzes is from 1 to over
1000 per hour, I usually record the events by hand on a
paper chart calibrated in seconds.
atlantis@itl.net
5, David Place, St Helier
Jersey Channel Island
-, U.K. JE2-4TD
United Kingdom