The
systems utilize a unique transmission method that confuses the decoding
circuits of cellular handsets as if no cellular base station is within
the service area. Upon activating the Blocker, all idle phones will
indicate "NO SERVICE".
Consequently,
all cellular phone calls already in progress within the defined area will
be cut-off and the radio link will be lost. When activated, incoming calls
are handled as if the cellular handset is OFF and calls may be routed into
a voice mailbox. When the Blocker is turned off, all
cellular handsets will automatically re-establish communications with the
cellular systems and provide full service.
Features
This
Cellular Blocker is a jammer device that transmits low power radio signals,
which cut-off communications between cellular handsets and cellular base-stations
in a regulated area.
The
jamming effect can be digitally controlled and regulated to form a
"quiet" zones in confined places.
The
Blocker does not interfere with any communications other than cellular
within the "quiet" zone and does not interfere with cellular communications
outside the regulated area.
The
low power unit contains one or two modules, each of them covers a
single frequency band (800/900/1800/1900). The unit is microprocessor
controlled and has digital power control, thereby
enabling
accurate calibration of transmission power.
Configurable
for coverage of all types of cellular systems including analog (AMPS, TACS,
NMT) and digital (TDMA, CDMA, GSM, PCS).
Each
module has an internal antenna and maximum output power of 500 mW (total
1W).
Various
optional accessories are available, including rechargeable battery pack,
external antenna, reflector mounting panel and remote control.
You may send us an e mail
should you need any additional accessories. Item 4001-1 |
