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What are the necessary parameters of analog radio communication? Frequency and CTCSS/DCS.  ...

The first way is the VFO or variable frequency oscillator. The MR stands for memory. When in this mode you input a frequency into a memory channel.   ...

Software is the most temporary and malleable. Firmware is semi-permanent software that’s tied more directly to the hardware and updated less often, and hardware is the physical component that is mostly permanent.  ...

When we get a walkie-talkie, the first thing we want is to make it communicate with another walkie-talkie.  ...

The squelch switch is a function specially designed to solve the contradiction between the call quality and noise of the wireless walkie-talkie.  ...

The signal report of an amateur station consists of three parts: "R" representing the discernibility of the signal, "S" representing the signal strength, and "T" (Tone, the quality of the signal) representing the signal tone, so the signal report often becomes " RST".  ...

With the continuous improvement of walkie-talkie functions, we have seen walkie-talkies in different industries and fields. Whether it is a sudden epidemic or daily communication scheduling, we have found that the role of walkie-talkies in medical scenarios is becoming increasingly prominent.  ...

Communication distance is an important indicator of walkie-talkies, but why is there no distance parameter in the parameters of walkie-talkies? There are also some descriptions that have a distance description, but the range is very large, such as 2~5 kilometers. How should I understand this communication distance?  ...

Nowadays, many car friends have various self-driving FB activities, and many car friends organize their colleagues, relatives, and friends to drive together so that there will be problems with communication requirements between vehicles, radio will play a very important role in self-driving and multi-vehicle travel.  ...

An important principle to be followed by the host installation is to be able to provide enough heat dissipation space because when the radio host is in the transmitting state, the heat is very large.  ...