The result of quantity computation of Cell Phone Jammers should be recorded

The result of quantity computation of Cell Phone Jammers should be recorded. 
RF test set using CMU200 or HP8960. Spectrum analyzer with HP or AGILENT series. 3, band-stop filter BANDREJECT FILTER requirements of the corresponding emission band above 30 dB signal attenuation, RF on the second and third harmonic attenuation (insertion loss) is less than 1.5 dB, VSWR less than 1.3:1, greater than the rated power input 1W. 4, testing the cell phone in connection with the tester when the BS TCH signal strength is set to-60dBm, when the bit error rate testing, BS signal standard-102dBm. Shielding box, notch filter, RF attenuator, RF cable and so on. It will take some time to finish the quantity computation of Cell Phone Jammers for this order. 
As the text of the code is encoded using 2 bytes, so the sending and receiving a mixture of Chinese or English can only use SMS PDU mode. However, in the GSM standard, the Chinese encoding in UTF-8 encoding is not currently used GB-2312 encoding, so the need for Chinese encoding conversion, in order to use GB-2313 character base with matching font to display Chinese characters. The personnel responsibility of Cell Phone Jammers workshop will emphasize the responsibility of the individual. 
Now, with the growing popularity of cell phones, cell phone text messages (SMS) because of its convenience, low-cost and welcomed by people. Especially due to the GSM SMS service through the signaling channel transmission, no dial-up connection, the application of the weather system, GSM-based SMS service can be widely used in meteorological data, meteorological services, to provide weather information for decision making at all levels of leadership . GSM-based mobile messaging platform module with SIM card only, no need to negotiate with operators to replace the cumbersome short message line access, and is currently one of the most extensive communications program. Computers and cell phones are generally using asynchronous serial communication, communication rate of 19200B / S or more, just need to add user information to the appropriate destination address to send Short Message Service Center (SMSC) can, through the service center store and forward to the final letter of accommodation. The factory should deliver Cell Phone Jammers strictly in accordance with the lead time of Cell Phone Jammers .
GSM module through the serial port control provided by the AT command set GSM07.05 to achieve, as long as the computer through the serial port to the module can send and receive a series of AT commands to send and receive SMS GSM MODEM control purposes, the AT commands used in Table 1 below. Currently GSM module for SMS control There are three ways to achieve: Block Mode; based on AT commands Text Mode; based on AT command PDU (Protocol Data Unit, Protocol Data Unit) Mode. Block mode handset manufacturers need to provide driver support; send and receive text messages using Text mode, the code is simple, very easy to implement, send text directly on the line, sending non-ASCII content can also be made, but need cell phone support in order to properly display, which limits the Chinese SMS applications; and PDU mode SMS support not only in English, but also send text messages in Chinese, has become the de facto standard, briefly described below PDU mode. The factory should describe the lead time of Cell Phone Jammers in a clearer way.