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Non Radio covert communications

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Non Radio covert communications
20 August 2013, 18:55,
#14
Steve Offline
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 		Posts: 1,119
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RE: Non Radio covert communications
Modulated IR lasers are interesting, that's what spooks use to bounce off your windows and listen to you from a mile away. If you can't afford a laser you can focus a led or similar point light source with a telescope. Put the light source where your eye would be and the beam can be focused using the normal focus control. This would get more light to the target than simply using a pin-hole and blocking the rest.

I can see Anglesea ( about 70 miles away ) from here if anyone wants to have a go :-)
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Messages In This Thread
Non Radio covert communications - by Lightspeed - 20 August 2013, 07:59
RE: Non Radio covert communications - by Highlander - 20 August 2013, 08:06
RE: Non Radio covert communications - by Lightspeed - 20 August 2013, 08:42
RE: Non Radio covert communications - by bigpaul - 20 August 2013, 10:58
RE: Non Radio covert communications - by Lightspeed - 20 August 2013, 11:58
RE: Non Radio covert communications - by Prepper1 - 20 August 2013, 11:25
RE: Non Radio covert communications - by I-K-E - 20 August 2013, 14:01
RE: Non Radio covert communications - by Lightspeed - 20 August 2013, 14:20
RE: Non Radio covert communications - by Highlander - 20 August 2013, 14:50
RE: Non Radio covert communications - by Lightspeed - 20 August 2013, 14:55
RE: Non Radio covert communications - by Lightspeed - 20 August 2013, 17:41
RE: Non Radio covert communications - by Steve - 20 August 2013, 18:55
RE: Non Radio covert communications - by Lightspeed - 21 August 2013, 12:06
RE: Non Radio covert communications - by Lightspeed - 25 August 2013, 06:57
RE: Non Radio covert communications - by Highlander - 26 August 2013, 18:22
RE: Non Radio covert communications - by Jonas - 25 August 2013, 17:55
RE: Non Radio covert communications - by Lightspeed - 26 August 2013, 19:38
RE: Non Radio covert communications - by Mortblanc - 28 August 2013, 20:21
RE: Non Radio covert communications - by Lightspeed - 28 August 2013, 21:51
RE: Non Radio covert communications - by Mortblanc - 30 August 2013, 18:29
RE: Non Radio covert communications - by Midnitemo - 30 August 2013, 18:35
RE: Non Radio covert communications - by Midnitemo - 30 August 2013, 11:37
RE: Non Radio covert communications - by Lightspeed - 30 August 2013, 11:42

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