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   Counter-surveillance sweep by Nationwide Investigations Group   
      
   In July 1994 the private detective agency Nationwide Investigations Group   
   conducted an electronic counter-surveillance   
   sweep of my parents' home in London. They checked for radio transmitter   
   devices, and tested the telephone line for attached   
   bugs. They found nothing.   
      
   I am afraid that I was unsurprised at their not finding any evidence of covert   
   surveillance. It had been made very clear to me,   
   particularly during 1990-92, that audio, and almost certainly video,   
   surveillance of my parents' home was taking place. But this   
   would not have been made quite so obvious unless the persecutors were   
   confident of their apparatus being undetectable using the   
   technology the police, or a private agency like Nationwide, would be using.   
      
   I don't know very much about the surveillance technology that has been used   
   against me, but I understand that devices can be built   
   which switch off on receiving a coded command, and may switch on again after a   
   counter- surveillance sweep has completed; that devices   
   may rapidly alter the frequency of transmission, "frequency-hopping" devices   
   which presumably cannot be detected in a sequential scan   
   of the sort employed by Nationwide; and of course "probe" microphones can be   
   inserted "through-the-wall", although I hesitate to   
   believe our neighbours would permit this.   
      
   We paid Nationwide £411.25 (including VAT) for the surveillance sweep, which   
   took them about an hour and a half to complete, using   
   a "Professional 5000 multi-scanner, CCL UHF scanner and Guideline telephone   
   tap detector." As I said above, I don't know very much   
   about these things, so I can't comment on the capabilities or otherwise of   
   this equipment. But clearly the "watchers" are using   
   technology which in 1994 was beyond the detection capabilities of a good   
   private detective agency.   
      
   19   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)