"Peter C. Wallace" wrote:
I don't know, it looks like you're going to have to buy it and then figure it
out, how could you resist?
More seriously, googling brings up this lead on the company:
http://www.pgt.com/nuclear/sys4000.html
The company logo, as much as it can be made out, appears identical.
The company profile gives another hint:
"Princeton Gamma-Tech has been a leader in the field of semiconductor
gamma- and X-ray detectors for over 30 years."
Perhaps the "customer service and Reachback program" would provide an answer.