[ale] OT: Cell phone signal blocker

[Jeff Lightner]

That reminds of my past life working in a 5 diamond hotel in the early
80s.  Back then only such places had computerized front office systems
and they were very expensive.  (We had the IBM System 34 and upgraded to
System 36.)  The terminals for this system were huge and expensive.

The security guards used walkie-talkies with the big black antennas on
them.  One night the security guard came up and as a joke pointed his
antenna at the terminal next to me and said "Die!" then pressed the
transmit button. 

The look on his face when the screen went blank was priceless.  

Luckily for him the terminal had an internal circuit breaker he'd
tripped and I was able to open the cover and reset it.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Mike
Harrison
Sent: Monday, June 22, 2009 4:17 PM
To: Atlanta Linux Enthusiasts - Yes! We run Linux!
Subject: Re: [ale] OT: Cell phone signal blocker

> I have heard that there are such devices available
> (Europe?), although not legal in the US (FCC regs). There
> are also plans on the web (I think you can check through

they technically aren't legal.

And while ya'll are playing high-tech, it's amazing what a tesla coil
and 
a spark gap do to ANY radio usage. ;)

Way back in my caveman medical equipment days they called them
"diathermy" 
units when hooked to a large coil of wire. The RF would warm the
patients 
deep muscle tissue for "physical therapy" and "bloodflow stimulation".

They also shut off or fried anything not tube powered in the area,
and made radio communications nearby impossible. Broad spectrum white 
random RF noise. :)



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