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From: acardenas.ES@Xerox.ARPA
Newsgroups: net.ham-radio
Subject: Re: Listen to phone calls on your tvro
Message-ID: <1430@brl-tgr.ARPA>
Date: Wed, 11-Sep-85 13:54:16 EDT
Article-I.D.: brl-tgr.1430
Posted: Wed Sep 11 13:54:16 1985
Date-Received: Sun, 15-Sep-85 09:40:09 EDT
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As  I  understand it...


The new  (now old)  push is for  DEregulation.  It appears that attempts
to limit  *monitoring*  is not in step with  FCC  and  Feds  efforts to
that end.

Amatures have seen an almost  'washing-of-the-hands'  as far as  FCC
rules and regs violations go.  That is to say,  amatures do the foot
work,  then document-document-document  and then with enough complaints,
the  FCC  MAY take action against the violator.

Bearcat 250;  one of the most popular scanners on the market...

WHO  made the original demands to limit the tunning range(s),  FBI,
CIA,  FCC,  USA?  I  would sure like to see the letters,  memos or read
the  notes from the meetings!  What kind of  'pressure'  was applied to
Bearcat assure compliance with the feds desires?  Perhaps threats of no
FCC  equipment certification?  (Some newer scanners now offer almost
full-spectrum tunning). 

Looking at the technical manual for the  Bearcat 250,  a simple vco
voltage controls what frequency is monitored.  It is apparent that if
one simply injected a adjustable control voltage,  FULL-spectrum tunning
is possible within all three of the bands!  I  expect that one could
tune even higher and lower of specified limits with some loss of
sensitivity at the band edges.  Bypass the memory/processor  and it's
done.  I  add that there  ARE  program  'tricks'  that fool the
processor,  however,  there is a loss of receiver sensitivity.  There
are limits to the  'tricks'  too,  only a few more  MHz  are added with
this method.

The next logical question is:  Who will monitor the monitors?

Uncle T.
Tony Cardenas
Q.A. Auditor,  6085 Project
WA6IGJ