Walkie Talkie Receiving Sensitivity

Receiving sensitivity is an issue that has come up in recent customer contacts. So let's talk about what reception sensitivity is today. 

What is walkie-talkie reception sensitivity?

As we all know, the propagation of infinite electricity is "no return". Walkie talkie in a certain range can receive signals.

Sensitivity refers to the range that can receive signals clearly. It can also be said that the reception sensitivity is the receiver can receive the minimum signal threshold. Beyond this range will not be able to receive or noisy.

The role of walkie-talkie reception sensitivity

Receiving sensitivity is still expressed in dBm, usually the receiving sensitivity (e.g. -83dBm) identified by the WiFi wireless network equipment refers to the sensitivity level with Bit Error Rate (BER) of 10-5 (99.999%) at the rate of 11Mbps.    The receive sensitivity of a wireless network is very important, for example, if the transmitter has a transmit energy of 100mW or 20dBm, if the receive sensitivity is - 83dBm at 11Mbps, the theoretical unobstructed line-of-sight for transmission is 15km, whereas the receive sensitivity is - 77dBm, the theoretical unobstructed line-of-sight for transmission is only half of 15Km (-77dBm), and the receive sensitivity is - 83dBm, which is only half of 15Km (-77dBm). The theoretical unobstructed line-of-sight distance is 15km, while at a receiver sensitivity of -77dBm, the theoretical unobstructed line-of-sight distance of transmission is only half of 15Km (7.5km), or equivalent to the transmitter's energy is reduced by ¼, which is equivalent to 25mW, or 14dBm.

The reception sensitivity of the walkie-talkie has a great impact on the communication distance. General handheld walkie-talkie factory, the sensitivity has been adjusted to the best state according to the relevant technical requirements, in the absence of professional instruments and technicians, never adjust the reception sensitivity of the walkie-talkie. For the user, in addition to adjusting the static noise que value of the walkie-talkie, you can also use a high gain antenna to correspondingly improve the reception sensitivity of the walkie-talkie.

The higher the sensitivity of the walkie-talkie, the farther the distance of the call.

Because of the high sensitivity, anti-jamming no way to do a good job, so the high sensitivity of the machine is suitable for use in the air in the environment of radio wave interference is relatively small.

Sensitivity is not the higher the better someone by often boasted that the higher the sensitivity the better, but not always "the more sensitive the better," such as listening to hundreds of kilowatts (KW) of high-power radio is not applicable.