The working hat is indispensable in the Cell Phone Jammers workshop

The working hat is indispensable in the Cell Phone Jammers workshop.
In short, the repeater has a lot of technical parameters, as described above. But for a repeater, the main operating frequency range, the maximum output power, gain range, etc., this should focus on these technical parameters. Repeater is a lot of AMPS and TACS analog mobile communication system evolved into the CDMA system, after only a few changes to adapt to the CDMA carrier frequency of the need to have more than one (our system has a 10MHz bandwidth 800MHzCDMA), some straight put station manufacturers, are not as good as its broadband repeater designed for the narrow-band CDMA repeater performance. Safety is the most important item in the Cell Phone Jammers workshop.
Because the CDMA system the signal to noise ratio is far lower than other systems, front-end low-noise amplifier performance is very important, broadband filter is not conducive to the manufacture of low-noise amplifier. Actually meet the multi-function wave repeater is not necessary, repeaters are working in marginal areas with low traffic, the first CDMA carrier to ensure the work can be 283 channels. Repeater base stations and rolling development, transitional product, when you need the second carrier, the repeater station has been replaced. A number of manufacturers in order to obtain greater coverage, the Repeater maximum output power production up to +43 dBm, it is not necessary. Take a large output power +33 ~ 38dBm more appropriate. The shoe for the worker in the Cell Phone Jammers workshop is specially made.
(1) 2B + D digital phone: 2B + D interface to access digital phone through BR1 ISDN. Phone 2 B-channel telephone and data services. By D-channel capacity, digital phone than it can provide a richer SLT supplementary services and display functions. TA will join the general function of the number in the phone, so that the PC via digital telephone RS232C/V24 a dial access Internet. (2) ISDN terminal fitting device / card: ISDN fit device with S / T interface, telephone interface, one or more RS232C/V24 interfaces are connected to NT1, ordinary telephones, one or more PC. NT1 device can fit in with the same physical entity. The director plans to collect more advice about workshop management of Cell Phone Jammers .
ISDN fit directly into the PC card expansion slot, a PC bus through communication with the PC, the card has a S / T interface and telephone interface are connected to NT1 and ordinary telephone. (3) ISDN Router: LAN can connect via ISDN router ISDN-BRI or PRI interface to dial-up or semi-permanent way to access Internet. ISDN routers in addition to completing a three-tier routing, forwarding, they need to complete the second floor between the Ethernet and ISDN protocol conversion. The technical group of Cell Phone Jammers will start the inspection tomorrow afternoon.
(4) ISDN video conferencing systems include the following: point to point multimedia desktop video conferencing: Using ISDN BRI interfaces can be organized point desktop video conferencing. During the meeting members face to face conversation, the two sides can share an application or to use a whiteboard. Meeting-point desktop video conferencing based on the need to configure the PC ISDN adapter cards, video cards, camera, headset with the corresponding video-conferencing software (such as Microsoft's Netmeeting software).