Regarding wireless calling, we have seen how and how advanced the FM technology is used in the publicity of individual manufacturers. “FM FM wireless pagers are better than AM in terms of anti-interference, transmission power and battery consumption.” Let the majority of users at a loss, I will share with you on this issue.

In fact, the use of FM and AM in various industries is different. There is no question of who is advanced. For wireless pagers alone, the “anti-interference, transmission power and battery consumption” mentioned above, let’s look at:

1. Anti-interference: To put it bluntly, it is the interference of electric and magnetic fields in the environment where the pager is used. If the anti-interference is poor, it will cause the problem of short receiving distance and false alarm of the pager. From the actual situation, although there are a lot of invisible and intangible electric, magnetic field, and radio waves around us, we generally call them “clutter”. If the clutter happens to be at the frequency of the pager’s transmission and reception, what product There will be problems that the distance between the lines gets closer or even cannot be received at all. In reality, such interference is rare, otherwise our human production and life in such an environment will be affected.

2. Transmitting power: The power of the pager is large, and the communication distance is far, but the battery life of the large power is short, so the transmitting power of the pager cannot be designed too large. Theoretically, the average power transmitted by the FM wireless pager is 4 times the average power transmitted by the AM wireless pager. In actual applications, can FM products reach 4 times the communication distance of the AM products? The answer is no. In fact, the distance of AM products is far better than that of FM products. Why is that? Because a good AM product does not have a large transmit power in order to save battery consumption, but find ways to use advanced technology to improve the sensitivity of the receiver.