Re: Chirpers

["Sandy Perle" <sandyfl@earthlink.net>]

> Response due to photon energy tends to fall rapidly for most units
> below 60-80 keV.

As Ken said above, there is also a lower response for photon 
energy above the Cs-137 calibration (for some units). I have 
observed between a 10 and 15% under-response when exposed in 
Co-60 fields. Check the data specifications for the various units you 
are interested in.
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