Wanhua walkie-talkie frequency writing softwareIt is suitable for Wanhua walkie-talkies and can modify the receiving and transmitting frequencies of the walkie-talkies. Most security personnel in our country use Wanhua walkie-talkies. Needless to say, the importance of frequency writing software
Software introduction
According to the regulations of the China Radio Regulation Commission, walkie-talkie frequencies are generally divided as follows:
Professional walkie-talkie: V segment 136-174MHZ; U segment 400-470MHZ;
For armed police and public security: 350MHZ;
Coastal use: 220MHZ;
Amateur use: 433MHZ;
For cluster use: 800MHZ;
Mobile phone: 900MHZ/1800MHZ;
Public intercom (civilian intercom): 409-410MHZ
According to electromagnetic theory, the lower the frequency and the longer the wavelength, the weaker the ability of radio waves to penetrate buildings, but the stronger the diffraction ability; the higher the frequency, the shorter the wavelength, the stronger the ability of radio waves to penetrate buildings, but the weaker the diffraction ability. Therefore, for professional walkie-talkies, in cities where the density of buildings is high and strong radio wave penetration is required, U-segment (400-470MHZ) is more suitable; while when using walkie-talkies in open areas such as wilderness or the sea, radio waves with strong diffraction ability are needed, so V-segment (136-174MHZ) is more suitable. Such as 450.125 to 450.125, encrypt 100 or not encrypt 450.625 to 450.625, etc.
Useful
Useful
Useful