In recent years, people's living standards have improved, and some families have used cordless telephones. Because there is no telephone line, it is convenient and practical, and it has become the first choice for more and more families to purchase telephones. What do you care about at the moment is the farthest distance of the cordless telephone ? In the following time, Xiaobian will explain it to everyone!
How far is the farthest distance of the cordless telephone ? In fact, the instructions for the cordless telephone are indicated. The cordless telephone connects the handset and the base unit by means of the transmission and reception of the radio, so that the handset can also talk. Ordinary cordless phones, the call distance is not very far, although the theoretical value is very high, but in the case of obstacle-free, if it is used by the family, because there are obstacles, it can only meet the house of about 150 square meters.
How far is the domestic indoor cordless telephone farthest ? Generally, the distance between the domestic and the cordless telephone is about 300, and the indoor is about 100 meters. The following conditions are mainly determined:
A. The working frequency of the cordless telephone is generally around 50MHZ, falling within the very high frequency. The VHF is a straight line that is suitable for short-range communication.
B. The transmission power is small. The national standard stipulates that the transmitting power of landlines and mobile phones should be no more than 20Mw.
C, the antenna height is low, about 1 meter from the ground. The length of the antenna is generally less than 1.5 meters. The frequency resource of the cordless machine is limited. When the distance is too large, it may cause interference to other cordless machines and electrical appliances.
D. Because the battery energy of the cordless telephone handset is limited, the transmission power is not large. It is related to the structure of the house in the room, and some have a larger shielding effect.
This article on the farthest distance of the cordless telephones is introduced today, and I hope that it will be helpful to friends who use cordless telephones.
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