[sci.electronics] Fox

khayo@sonia.cs.ucla.edu (Erazm J. Behr) (11/22/87)

Bob Parnass writes about his wireless mike adventure -
something just like that happened to me recently, but it
was *clearly* a bug & I seriously considered calling the
cops or tracing the house, until I started thinking about
all the possibilities (man checking on his wife from a car
parked nearby, FBI investigation etc.; I read a lot of trashy
books these days.)
Finally, after 2 days it occurred to me that it was one of the
wireless intercoms that some parents use to monitor their kids'
rooms. The 1/2-funny thing was that the child involved sounded like
a 10-year old, and I wonder if the thing will still be in her
bedroom when she's 16 (Johnny, no, please, what if my parents
hear us?...) Just wondering.
-----------------------------------------------------------
          >>>>--------------->         khayo@MATH.ucla.edu 

parnass@ihuxz.ATT.COM (Bob Parnass, AJ9S) (11/22/87)

x
   While tuning around on my ICOM R-7000 receiver last  Sun-
   day,  I  came  across  an  odd signal on 171.125 MHz.  It
   sounded like the banter of a teenaged boy and girl.  As I
   listened  more  closely,  I  could detect music and other
   conversation in the background.   Somebody  mentioned  an
   Oswego florist.

   The signal was transmitted continuously, unlike the  back
   and  forth transmissions in a two-way radio conversation.
   Was this a "bug" planted by some cloak and dagger federal
   agency?  A maverick cordless telephone?

   I phoned another radio enthusiast friend in town  to  see
   if he could hear the signal, but he wasn't home.

   Being a curious guy, I hopped into my truck and  program-
   med the mobile Bearcat 260 scanner.  My mobile antenna, a
   19" whip inside the truck, isn't  very  sensitive.   Even
   so, the signal got stronger as I drove the 1.5 miles from
   my house into Oswego (Illinois).

   I found the source of the signal after a few  minutes  of
   driving  around town, and listening to the activity.  The
   mysterious signal was from a  wireless  microphone  being
   used  for  a play at Oswego High School!  More tuning the
   next day uncovered 2 other Oswego  High  School  wireless
   mike frequencies:  170.225 and 171.825 MHz.

   A word to you security-minded  types:   If  your  company
   uses  a wireless microphone, then your competitors are in
   a position to say "We hear you!"
-- 
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Bob Parnass,  Bell Telephone Laboratories - ihnp4!ihuxz!parnass - (312)979-5414