[aprssig] Carry Ons
dave at emv.co.uk
Tue Jan 8 11:42:01 CST 2008
The systems use false colour to show subtle changes in density etc.
Some scanners can by using different X-Ray wavelengths even identify
some common chemical compositions. Not sure why they'd want to know
There are also some RF/mm wave based whole person scanners on trial.
Not sure how they work, yet, but you have to stand still with your arms
out, while a frame (coil?) whizizes round you....
may be one such system, there are also low intensity back-scatter X-Ray
http://www.msnbc.msn.com/id/3071573/ like that....
Take care people...
> -----Original Message-----
> From: John Habbinga [mailto:kc5zrq at gmail.com]
> Sent: Tuesday, January 08, 2008 2:32 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Carry Ons
> I flew to Dallas last weekend for a funeral. I took a
> handheld and had no problems with security. In fact, I
> almost always travel with some sort of ham gear and I've
> never been questioned about it.
> On this trip I did get to see the x-ray monitor as a guitar
> in a case went through the machine. I could see the
> woodgrain of the guitar and it in color! Now explain to me
> how they can see the wood grain of a guitar in color. After
> seeing that, I would imagine they can read the model number
> off of my handheld.
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