To ensure cell phone jammer can shut off automatically

To ensure cell phone jammer can shut off automatically.
The main performance of the external frequency interference unreasonable for the district planning, antenna parameter selection, as well as improper adjustment of cell parameters causes, leads the user to receive at the same location the same or connected to the frequency and carrier to interference ratio is less than 9dB, in the communication process have a serious background noise and even dropped calls. Frequency interference in the actual operation of the network is the main reason of the interference generated and there are a lot of high-density network. Frequency planning or frequency setting is incorrect, resulting in the same frequency, adjacent channel phenomenon in the short distance range memory, resulting in interference. This phenomenon occurred mainly in the place of regional boundaries and inter-provincial boundary, early this phenomenon also appears at the end of the network expansion project. Several low power cell phone jammer can be selected for the powerful jamming.Transmitter spurious radiation and receiving part of the spurious response, resulting in interference on this channel and other channels, serious will not be able to call. The STSE board 13MHz clock frequency offset greater than 0.65Hz, causing the actual output frequency and definition of the channel frequencies do not match, the phone can not be accounted for on the channel, even accounting for the on-channel call quality is also very poor. 
ho,-the margin-cell is smaller, the call more easily switched out. By setting the value of the busy traffic in the busy district. Meet this condition, the neighboring district. RXLEV-MIN (n) is the minimum receiving level of the neighboring district, and its default parameters the RXLEV-MIN-DEF, set this value can reduce the number of cutting people, reducing the switching caused by the traffic. It should be noted that this value is set properly, will increase the rate of dropped calls. Which HO-MARGIV default parameters for the neighboring cell ho,-the margin-def, adjust this value NEIGHBOUR LIST can change the order of increasing this value can also reduce the cut into the number of times. cell phone jammer is especially suitable for the location where the shielding range needs to be selected.Hopping is an important performance of the GSM air interface. Application of frequency-hopping technology in the network, the mobile station to change its frequency, after each pulse to switch between a set of frequency. Frequency change rate is lower than the modulation rate of hopping is called slow frequency hopping, the frequency change rate higher than or equal to the modulation rate, known as fast frequency hopping. The frequency hopping rate is determined by the requirements, generally, the higher the frequency hopping rate, hopping anti-jamming system, the better, but the equipment complexity and cost is also higher. At present, the use of slow frequency hopping in GSM system, the rate of 217 times / sec.