In this world full of noise and interference, when we say “I want to be quiet”, others will never really put you at ease, just make up self-humor: calm, who is that?
If you feel that you are immune to noise early, it is too naive – we are so-called “resilience” to noise, but it is nothing more than hearing and the ears cannot hear too much detail.
If you don’t believe it, you can try clicking on the following audio, with 30% of the volume scrolling to see if you can hear the sound:
This is a high frequency sound wave called “mosquito”.
If you’re under 25 but can’t hear these sound waves, it means your ears have entered early aging –
All types of noise contact with the bad habits of the ear are caused by the aging of the incentive. There is now a solution to this problem and the invention of the interferer makes it easy for you to solve the problem. So how do I buy this type of high performance portable jammer?
1. Make sure you know the frequency of the network. Most 900 MHz and 1800 MHz bands are used in Africa, Europe, the Middle East and Asia.
2. Make sure you understand your local communications service provider. In Germany the network standard is UTMS, 4G, CDMA and GSM. You should connect to the Internet before buying a phone jammer that can provide you with complete information on the frequency of your area.
3. Determine the area of interference and the purpose of the application. For a small part, like a classroom, is small and portable enough. But if you want to use it in a 10,000-seat theater, you need to buy a large capacity phone with a large interference area.