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From: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Newsgroups: rec.radio.amateur.misc,sci.electronics
Subject: Re: How to measure/detect X-ray (cheap)?
Message-ID: <1991Apr26.160440.21958@news.larc.nasa.gov>
Date: 26 Apr 91 16:04:40 GMT
References: <1991Apr23.172122.13076@Informatik.TU-Muenchen.DE>
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Reply-To: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Organization: NASA Langley Research Center
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In article <1991Apr23.172122.13076@Informatik.TU-Muenchen.DE> buettneb@Informatik.TU-Muenchen.DE (Buettner) writes:
>What I want to know is: How can I measure X-radiation (CHEAP)?
>How much is tolerable? CRTs produce X-Rays too, so how do
>manufacturers get around this problem. For thermal reasons
>I cannot put everything in a big box.

5.5 Kv tubes can produce some reasonable soft X-rays.  Go to your friendly
neighborhood dentist and explain your concern.  Get two small squares of
dental X-ray film (actually, mammography film is even more sensitive).  Put
one next to the transmitter, and keep another someplace else in the house
(or in another house altogether).  Give it a couple of days.  Then have him 
process the two sheets and look at the difference in density.  You should
not see any difference, and I doubt you will.  Do note that the reference
sheet will fog a bit if you keep it near anything radioactive, like brick.
   Ordinary photographic film will work as well, but it's not anywhere near
as sensitive to X-rays.  You'd want to wait longer.
--scott