On the purpose of telecommunication safety, lots of people begin to have a jammer with them. And widely know that is on the use of advanced modern digital communication technology and electronic technology.

There is no doubt that though in the same position, different indoor, different time may have great difference of mobile phone signal. Owing to the practical experience by scientists, the change of the value 10dbm can reach the highest power, while with the minimum power are 10 times.

With the radio signal transmission, the distances will 6dbm power decrease in intensity every doubled. You know, 10dbm changes and increase must power equipment may increase redundant, double; otherwise it will cause the intermittent during operation. In the non-stop operation circumstance, this kind of circumstance is not allowed on the high requirements, special occasions, such as protracted design according to the highest demand commonly when the signal and power redundancy design, high reliability, confidential for ensuring stable, shielding the effective demand is strictly jamming.

Article Source:http://www.chinajiaho.com/Wholesale-security-equipment-signal-jammer_c1053

PDA SMART PHONES are popular and common in today’s telecommunicate market. Then, what functions are included in your PAD SMART PHONES? Still have only some basic functions? Oh, no. Here, you should pay more attention to the following type of PAD PHONE:

You may be attracted by the amazing style, 2.8-inch QVGA display screen, and the luxury bar style, and streaming design are all the key points for such PDA Phone. Touch screen is designed with the big display, so that handwrite input is available. As normal pda phones, it is a world phone (quad-band) that compatible with GSM 850 / 900 / 1800 / 1900MHZ. The CPU of Marvell PXA310 624MHZ is a super feature of this phone with the windows mobile 6.5

What’s more? It supports bluetooth 2.0 with EDR and Wi-Fi at thelevel of IEEE802.11 b/g. And the HTC ExtUSB with 11-pin mini-USB 2.0 and audio jack in one. As to the ringtone, it is 72 chord and compatible with multi-format, including -AAC, AAC+, eAAC+, AMR-NB, AMR-WB, QCP, MP3, WMA, and WAV. For the music, the phone supports music of many formats, that contains MP3, MP4, WAV and WMA, besides the multi-formats, you can play music at background, speed and pause. In this cell phone, it has built-in microphone and speaker. The internal memory is 256M / 128M, but it is compatible to extend up to 8G memory card.

What accessories are included in the package? There is a 2G TF card, earphone, data cable, battery charger, and two bars of standard batteries, stylus pen and the English user manual.

Article Source:http://blog.chinajiaho.com/quad-band-pda-smart-cell-phone-with-wifi-windows-mobile-6-5/