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From: res@sdiris1.UUCP
Newsgroups: sci.electronics,sci.physics
Subject: Re: Laser eavesdropping
Message-ID: <562@sdiris1.UUCP>
Date: Thu, 2-Apr-87 00:53:39 EST
Article-I.D.: sdiris1.562
Posted: Thu Apr  2 00:53:39 1987
Date-Received: Sat, 4-Apr-87 11:48:00 EST
References: <499@sw1e.UUCP> <1505@husc6.UUCP> <560@sdiris1.UUCP> <503@sw1e.UUCP> <704@brl-sem.ARPA>
Organization: Control Data Corp.(CIM), San Diego
Lines: 14
Keywords: modulation
Xref: utgpu sci.electronics:448 sci.physics:1015
Summary: update modulation


Ummm... I goofed somewhat on my first posting... found the bugging
techniques book involved, and the circuit given is for a laser diode,
pulsed at approx. 10 KHz, and the recieved signal is described as being
"pulse width modulated" ( which is equivilent to am, for the purposes of
detection by simple analog detectors ).  The book also mentions the 
possibility of using doppler/interferometric methods with a continuous
laser.

- Skip the forgetfull one -

-- 
Skip Sanders :  sdcsvax!jack!man!sdiris1!res
Phone : 619-273-8725 (evenings)