Communication system consisting of desk-top ground single-channel base station and walkie talkies

Abstract

A communication system is characterized by comprising a control case for transmitting signals, a desk-top single-channel base station and walkie talkies, the base station is a relay station for sending and receiving signals, a channel device, a coupler and a level control panel which are sequentially serially connected are arranged in the base station, the coupler is communicated with an omnidirectional antenna, the level control panel is provided with a level inching switch capable of adjusting the base station and is further provided with a level free-adjustment device, the coverage area of the ground antenna ranges from 5km to 8km, batteries and a power manager are arranged in the base station, the power manager is provided with a floating charge, overcharge and overdischarge protector, a channel quantity extender, a temperature controller and/or a monitoring circuit, and the walkie talkie used as a handheld end serving as a receiving end is a click-to-call half-duplex walkie talkie with the wave band of 136-174MHz. The communication system has the advantages of low cost, convenience to install and maintain and capabilities of guaranteeing normal communication and communication quality.

Description

technical field [0001] The invention relates to a communication system, which includes a table top single-channel base station and a walkie-talkie. In mine application, the present invention mainly relies on leaky cables to transmit underground to ensure normal communication between underground roadways and normal communication between underground roadways and the ground. [0002] The present invention can also be applied to daily life, realize ground coverage through antennas, and can be applied to residential areas, shopping malls, parking lots and other places. The base station of the present invention can be a conventional analog machine or a digital machine. [0003] The so-called desktop type means that the structure adopts a 6U desktop type standard cabinet, which is small in size and easy to install. It is convenient to view data when placed on the console and can be adjusted according to the actual situation. The non-desktop type generally adopts a large cabinet, wh...

AI Technical Summary

Problems solved by technology

Some working methods use the base station and explosion-proof mobile phone to form a wireless link, duplex mode; wireless transfer is relatively simple in construction, but it is highly dependent on the environment, the signal strength of straight line transmission is high, and the signal strength of turning or blocking objects is weak or no signal , complex terrain and changing conditions underground, resulting in instability of wireless transmissi

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