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Question:

How far is the distance from a cordless phone? Why not go further?

How far is the distance from a cordless phone? Why not go further?

Answer:

Domestic cordless telephone is indoor cordless telephone, generally in the open conditions can speak distance of about 300, in the indoor for about 100 meters, mainly under the following conditions:The working frequency of A and cordless telephone is about 50MHZ, and it falls in very high frequency. Very high frequency is straight line propagation. It is suitable for short distance communication.B and small transmitting power. The national standard stipulates that the transmitting power of aircraft and mobile phones should be no more than 20Mw.C, the antenna height is low, about 1 meters from the ground. The surface antenna length is usually 1. Within 5 meters, the frequency of the cordless machine is limited, so it is easy to cause interference to other cordless machines and electrical appliances when the distance is too large.D, because the cordless telephone handset's battery energy is limited, the transmitting power is not big. It has something to do with the interior structure of the house, some of which have a greater shielding effect.
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