[FedCom] New Antennas on Secret Service Suburban

[gary]

Nextel is used for telemetry and remote control by cities, counties, and 
perhaps private companies. At one time (and may still be the case) 
Nextel was used to run San Jose's sprinkler system. In any event, 
jamming communications can have unintended consequences. If Nextels work 
near the jammer, then Nextel would be the remote control of choice for IEDs.



Jim Johnson wrote:

>That's an interesting observation and one I neglected
>to comment on in my initial post.
>
>The Law Enforcement community in this area (city PD &
>Sheriff's Department) still utilize VHF comms almost
>exclusively.  (Though there is a steady migration
>underway to the Michigan Public Safety Communications
>System (MPSCS) - a statewide 800 MHz trunking system.)
> Not sure how that might have been impacted in this
>instance.
>
>However, I did notice...rather close up...that the
>USSS personnel were continuing to use their Nextels
>the whole while.
>
>My guess is that they have with them, in one of those
>ominous black vehicles, a Nextel switch of sorts that
>allows them to be connected, via wireline, to the
>"Nextel Network".  (I know of situations in the past
>where Nextel would install a "node" in an especially
>large office building to serve the employees at that
>specific location and lighten the loading on their
>other sites so that they were available to roamers and
>other transients.)  Not sure that in this particular
>case a different group of frequencies would be used or
>whether the jammer can be selectively "notched" to
>pass some freqs and block others.
>
>Jim Johnson
>
>
>--- listen13579 at att.net wrote:
>
>  
>
>>This site has some additional comments about the
>>vehicle in question
>>including some links to a possible manufacturer of
>>the electronic
>>equipment:
>>
>>http://cryptome.org/spy-vehicle-02.htm
>>
>>Law enforcement officers frequently rely on cell
>>phones as a backup to
>>their radios and a blanket RF jammer operating in
>>the 800 Mhz band would
>>affect their phones as well. I wonder if LEO's are
>>advised in advance of
>>a POTUS visit to make sure their communications
>>plans don't involve
>>cellphones?
>>
>>Perhaps USSS would only turn the jamming on during
>>certain times (like a
>>motorcade movement) to avoid inconveniencing the
>>many people, including
>>White House staff, LEO's etc, whose jobs would be
>>affected by cellphone
>>disruption?
>>    
>>
>
>
>		
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>