Principle of mobile phone jammer
A. Brief introduction of handset:
Working principle of handset: In certain frequency band, handset connetc the base station with radiowave, and transfer data and sound by
certain band rate and modulation.
B.Brief introduction of mobile phones jammers:
The jammer scans the forward channel with the certain speed, from low frequency to high.This scanning will create the noise in the TX
signal, result that the handset can not receive the signal fromthe BTS, and disconnect with the BTS.From the handset ,you will see
Searching\No signal\No service....
C.Main function:
1Can block ＣＤＭＡ，ＧＳＭ，ＰＨＳ,3G ect effectively
2.Only block mobile phone signal, have no influence to any other electronic device.
3.Delay startup design, after connect the power supply, can work stably for a long time.
Main performance
Main performance of mobile phone jammer:
1. Working frequency: 869MHZ-894MHZ, 925MHZ-960MHZ, 1805MHZ-1880MHZ, 1900MHZ-1925MHZ,2110MHZ-2170MHZ, can block mobile
phone signals, PHS, CDMA, GSM, 3G ect.
2 .Jamming coverage: 0M-70M ( jamming coverage is influenced by the distance from the cellular station to the jammer.It is better to fix
the jammer to the place whichi is father than 200 meters fromthe cellular station. )
3. The jammers do not block the uplink frequency of the base station,have no influence to the basestation.
4. Take use of our customized IC, which consume litter power, the temperation of the main body is10¡æ lower than jammers from other
company. And can live 2 times longer than other jammers.
5. Radiation of the jammers is much less than the mobile phone, the jammers are really envir onmental protection product Take lead of
our colleages.
Main features of GSH mobile phone jammer
One
GSH technology company limited uses high efficiency component and integrated circuit, espacially uses special power stabilization IC.Our
jammers have high efficiency, easy to install, nd can work for a long time. They can a live two times as long as usual jammers.
Two
Can block CDMA signal effectively. CDMA communication net technology is combined with spread specturm, multiple access, beehive net,
and the frequency domain, time domain, time domain and code field three dimensional signals cooperate together. Therefore, the signals
are good at anti-jamming and anti-multipath fading. So even increase the transmitting power, it is impossible to enlarge the covering range
to 10M. But we take use of most advanced IC which come from Japanese Renesas TechnologyCorportaion ,can settle the mattle effectively,
and adopt power amplification technology and power stability technology,we take the lead in solving the difficult problem-jamming signals
decay with time, to ensure the jamming signal is stable.
Three
Really envirment protection product. Our amplification IC is consistent with mobile phone IC, so their transmitting power is consistent with
mobile phone's transmitting power. Our product is researched and developed for National Safety Authority, National Safety Authority
requires high abour envirment protection product. Our products overcome many technical difficulties, decrease transmitting power,and
ensure the electromagnetic radiation is far below national standard( 12uV per square metre), and increase the coveraging range to farther
than 20M. Has no harm to human being, are really envirment protection product.
For
Our customized industrical power supply are hight temperature resistant and moisture resistant, can ensurethat the main body can work
for a long time.
Five
Special Nec technology settlement, take the lead to settle the matter that mobile phone jammer signals decay with time,guarantee that the
temperature of the main body is ten times lower as other jammers, and can live two times as long as other jammers.
Main functions
Four channels can jammer CDMA, GSM, PHS etc effectively.Only block mobile phone singnals, has no mfluence to other electrical device.
Can be used in any places farther than 200M from base station (the jamming coverage can be affected if the distance is not farther than
200M)After switch on, can work stably and continously for a long time.Special overvoltage protection, over current protection and short
circuit proction circuit can prevent spark by mechanical switch.
