Cell phone jammer for CDMA 850-894 MHz

CDMA, short for Code-Division Multiple Access, uses a “spread-spectrum” technique whereby electromagnetic energy is spread to allow for a signal with a wider bandwidth. With CDMA technology, data and voice packets are separated using codes and then transmitted using a wide frequency range. Since more space is often allocated for data with CDMA, this standard became attractive for 3G high-speed mobile Internet use. CDMA is a military technology first used during World War II by English allies to foil German attempts at jamming transmissions. The allies decided to transmit over several frequencies to make it more difficult for the Germans to pick up the complete signal. Because Qualcomm created communications chips for CDMA technology, it was privy to the classified information. Once the information became public, Qualcomm claimed patents on the technology and became the first to commercialize it. To block the widely used CDMA signals, the CDMA 850-894 MHz cell phone jammers appears.

There are several newly developed cell phone signal jammers for CDMA 850-894 MHz, such as the 3G GSM CDMA Broad Spectrum Mobile Phone Signal Jammer. It is a phone signal jammer with complete spectrum interference and long jamming range of up to 8 meters. It comes with a built-in rechargeable Li-ion battery and car power adapter, so it can easily get charged both in cars and any other places. Specially designed for general users, it is incredibly easy to operate. All you need to do is to switch the on/off button that it will immediately start blocking not only the 850-894 MHz, but also the GSM, DCS and 3G. We also got many more capable CDMA 850-894 MHz cell phone signal jammers for more professional applications, such as the 40 Meter Range Mobile Phone Signal Jammer. It is an advanced cell phone jamming blockers that can jam all mobile phone signals such as GSM, CDMA, and PHS. Moreover, it can also block little smart wireless city phone signal and SCDMA signal. It only block downlink frequency from BTS and do not block uplink frequency. So it has no affection to other BTS, which is more advanced than any other similar cell phone signal jammers.

Besides the two cell phone signal jamming blockers for CDMA 850-894 MHz, we also have many other types of phone jammers. For example, we have the 5 Antenna 25W High Power 3G Cell phone & Wi-Fi Jammer with Outer Detachable Power Supply, 5 Antenna Cell Phone Jammer with Remote Control for 3G/GSM/CDMA/DCS and 4 Antenna Cell Phone Signal Blocker with Remote Control, etc. Wanting to get to know more about the cell phone signal jamming blockers for CDMA 850-894 MHz, you can easily find them at jammerall.