P-25PK4

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P-25PK4 is a professional communication product with wide application field and mature working principle. It is widely used in public security, energy and power, finance, justice and transportation, etc.

The product consists of P-25PK receiver and transmitter. The receiver can receive signals from sound waves, electrical signals, satellite, cellular phone etc. It can detect, analyze and process these signals accurately and reliably. The transmitter is suitable for voice communication, short message service, multimedia service, telecommunication service and so on.

The working principle of P-25PK4 is based on the components of common digital sub-channelized (DCS) or sub-linear (SL) radio systems. It can be divided into two layers, which are the baseband layer and the radio frequency (RF) layer. In the baseband layer, the receiver receives, demodulates, decodes and processes incoming signals from the network. In the RF layer, the transmitter uses RF carrier frequencies to send out the generated signals.

The P-25PK4 also has features such as encryption, frequency hopping, channel coding and so on, which can provide stronger security during communication. It has a transmission power of up to 500 mW and a wide operating bandwidth of 810MHz. It supports several voice codecs pre-installed, and has an adjustable squelch filter with multi-level noise suppression.

The P-25PK4 provides users with reliable, secure and robust performance. It is the preferred communication products of many large-scale government projects and companies, and is widely used in public safety, energy and power, finance, justice and transportation industries.

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