亚洲欧美韩日综合_国产精品午夜无码AV无码_日韩精品成人片在线观看一区_高清精品一级毛片_久久综合精品国产一区二区三区_欧美日韩午夜激情电影_婷婷亚洲综合视频在线观看免费_国产高清AV一区不卡_人妻丰满熟妇?v无码处处不卡_中文字幕制服

  1. All calls should be recorded:
  Currently on the domestic market, there is almost no device that can wirelessly acquire the intercom calls, some manufacturers claim that they can wirelessly acquire, the actual principle is to add a walkie-talkie receiving module inside the recording device, in other words, it is a walkie-talkie placed inside. This approach has several problems: the frequency range of acquisition, the distance of acquisition, and cost. Because the built-in receiver module can only cover a certain frequency range, and different industry applications will have a lot of different frequency ranges, such as civil, military, public security, railroads, the Maritime Safety Administration, they have an independent frequency range, if only a built-in receiver module, the scope of its application will be very small; the second problem is the collection of the distance, the walkie-talkie power is relatively small transceiver distance than the radio station is a lot smaller if the built-in walkie-talkie, the module can not be collected, the collection distance is very small. Built-in walkie-talkie, the module can not replace the antenna, it can not go to record the radio; the third problem is the cost, for professional walkie-talkies, the price is very expensive, with a built-in receiver module is certainly more expensive than the external. Rain Birds VLD series of recording equipment, are used to record the external walkie-talkie way to record the walkie-talkie brand and model does not have any requirements, used to record the walkie-talkie can still be used as a routine, can be replaced at any time can be replaced walkie-talkie can be used with the existing walkie-talkie, the civilians special replacement at will.
  2, the recording will not be missed:
  When you choose a recording device, you can not just consider the price, cheap recording equipment in addition to its own features and performance of a single, voice-activated response speed is often lower, because they are in order to save costs are using low-speed microcontroller. This will result in a large number of missing words, say a sentence in front of several words, the later forensic query has brought a lot of trouble. Rain Birds VLD series of walkie-talkie recording equipment voice-activated response speed is second to none in similar products in China, only milliseconds of delay, much faster than moving a few seconds of delay.
  3, can get ID:
  There are usually 2 kinds of ID, one is the emission of DTMF code, and the other is a digital code. For the first kind, our VLD series walkie-talkie recording equipment, it is possible to get it. For the second, unfortunately, not only our VLD series recording equipment can not get, other third-party similar products can not get any one, because it is digital, using only the walkie-talkie itself can recognize the code, third-party recording equipment, is unable to decode it!