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EPSYLON TRAINER RADIATION METER No1, 1950's
The unit is not very sensitive,and the scale is not calibrated, the word trainer indicates its nature.
This is a companion model, the trainer is used to teach the use of the Radiac Model No2. Item A1300.
The range is low so it will detect the weak training sources used to simulate radioactive fallout.
See Radiac No2, A1300 for more information.
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- I have 2X the number 2 model. One has a mod looks like a power inverter & solid state & another that is unmodified. I have put my watch by it & not much happens. However when I place my hand by the detector plate (Without the cover or flap) the needle dances about. If I put it near a CRT old monitor it detects the static as when I turn the TV on & off it matches to needle movements. The HT is there I heard a click as I touched the detector case there was a bit of static. Maybe it needs more radiation the kind you don't want around like after a nuclear exchange. I removed the cap at the front & put my watch there nothing. But I thought BETA waves get stopped by Glass? I don't fancy taking my watch apart. I would appreciate any info on the item & is the behaviour I described normal? Dave Morris-Jones
.......... Dave Morris-Jones, Chester UK, 25th of May 2013
- I have one of these instruments , used by the Civil Defence Corps in the 1960s. Mine is scaled 0-3 rontgens/hour x 10 to the -4.
The detector is a long gm-tube. The electronics used 3 CV228 hearing aid valves. The instrument was only capable of measuring gamma, as the tube itself was insensitive to alpha, and the case shields it from beta radiation.
Unfortunately in my case the counter had been badly stored and the electronics were shot. However the geiger-muller tube and the meter were fine. I designed my own electronics and it now works fine as an uncalibrated geiger counter giving about a quarter scale reading on background (background is about 0.2microSieverts/hr here).
.......... Steve Cook, Richmond/Surrey, 20th of February 2011