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FAQ

FAQ

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Base station of vehicle mounted station and transfer station: how to match the duplexer of relay station?

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Solution: frequency requirements of relay station: (1) The general standard of 150MB is to receive low and send high. The difference is 5.7mhz (for example, if receiving 155.000mhz, then transmitting 160.700mhz. (2) The general standard of 400MB is to receive low and transmit high, with a difference of 10MHz (if receiving 455.000mhz, then transmitting 465.000mhz.). (3.) the frequency point of the channel and the duplexer generally require about 350khz (for example, the first channel is 455.000mhz, and the last channel is 455.350mhz is the best. However, if the customer has special requirements, please contact the company. Preventive treatment: it is better to confirm before ordering.
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Vehicle mounted station and transfer station base station: what is the problem of no power and short transmission distance?

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Solution: 1. The module is damaged or the duplexer is damaged. Please replace it in time. 2. The frequency point is changed by itself, which is beyond the scope of use. Prevention and treatment: avoid electrostatic impact, lightning strike, high voltage connection and antenna mismatch during use.
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Difference between digital walkie talkie and analog walkie talkie

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The differences between digital walkie talkie and analog walkie talkie are as follows: 1. digital interphone can make better use of spectrum resources. More users can be loaded on a given channel. Improve spectrum utilization. It is a solution to frequency congestion. 2. stronger communication security: digital series walkie talkie products apply high-level digital encryption technology. Maximize the privacy of user communication. Avoid the worry of communication leakage. 3. clearer call quality. Digital series walkie talkie products have ultra long-range and ultra clear voice call quality. In addition, digital walkie talkies have greatly improved analog walkie talkies in terms of anti-interference, noise filtering and transmission filtering. It can easily meet the complex and changeable professional communication needs of users. Temporarily summarize the difference between the above digital walkie talkie and analog walkie talkie. If you have other questions. You can consult customer service or the dealer.
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How to use interphone

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1. When the walkie talkie is transmitting, keep the walkie talkie in a vertical position and keep the microphone 2.5-5cm away from the mouth. When launching, the interphone shall be at least 2.5cm away from the head or body. 2. Do not turn on or off the machine for many times during use, and adjust the volume to suit your hearing. Please refer to the product manual for details.
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