banner
blog
Home

blog

What should I do to affect the campus broadcast signal when the interferometer is turned on?

What should I do to affect the campus broadcast signal when the interferometer is turned on?

  • 2022/08/08

Every year, there will be listening test content in College English CET-4 and CET-6. Before the beginning of the test, the test venue will turn on the mobile phone signal interferer to interfere with the mobile phone signal in the test venue, to prevent candidates from cheating in the test using communication tools. Many schools react to some degree of interference on campus broadcasting after switching on the mobile phone signal interferer. In some areas, the radio signal interference is serious. After switching off the mobile phone signal interferer, the interference will disappear. Let's talk about the cause of this situation and how to solve it.

First, campus radio is a kind of low-power FM broadcasting. Many colleges and universities, middle schools and even light snow, now a large number of English programs or other programs are broadcast by campus FM broadcasting, the frequency range is usually between 76-88MHz. The signal emitted by the mobile phone signal jammer is the same white noise jamming signal as that used by the mobile phone. The lowest frequency band is the 500M radio 5G band, which is not the same as the signal frequency broadcast on campus. It is even far from each other. The reason for the interference to the campus broadcast signal is probably that after the mobile phone signal jammer is switched on, the noise at the bottom of the test venue is increased in some areas. This bottom noise drowns out the signals broadcast on campus, so it causes the radio signals to be disturbed. So what can I do about it?

Resolvent:

1. Adjust the radio frequency of campus broadcasting, and conduct interference testing to find out the use of campus broadcasting band with the least interference.

2. If you can't find out the smallest interference band for campus broadcasting, you should not turn on the mobile phone signal interferer during the listening test and turn on the signal interferer after the hearing test.

"Shengma"  shield | Nanjing Baikang Mechanical Technology Co., Ltd-ljw

Copyright © 2022 NanJing BoKang Electromechanical Technology CO.,LTD.All Rights Reserved.

IPv6 network supported

IPv6 network supported

top
NanJing BoKang Electromechanical Technology CO.,LTD

Send A Message

Send A Message

    If you are interested in our jammers and want to know more details,please leave a message here,we will reply you as soon as we can.

  • #
  • #
  • #