The two way radio is composed of shell, host,battery, belt clip, antenna, charger, and so on.
Professional two way radio
generally adopted the plastic materials PC + ABS which are excellent in performance, good gloss in appearance. What’s more, it is not easy to age, with wear, tear, and durable characteristics; commercial machines often choose the engineering plastics ABS, it can well meet the requirements in the appearance, strength and resistance to abrasion, aging. The button used the silica gel, so it is wearproof, not easy to age, and feels good. Aluminum shell is made of light material aluminum alloy ADC12, it is easy to be molded and treated.
Generally, host includes the surface shell, PTT button, headphone and power plug, PCB components, LCD parts, volume / switch button, coding knob, indicator light, MIC, etc.. PTT button, usually on the side, plays the role of launching switch. Indicator, generally at the top, indicates working status. There are volume / switch button and coding knob (channel selection) on the top of the radio and the. Part of LCD Intuitively display of the working state of the radio. PCB component is the core part of the two way radio.
Devices are on the PCB, only professionals are allowed to disassemble. Most of the radios are equipped with special shield, aluminum shell (fixed PCB) because of the requirements of technical performance and anti-throw characteristics. Professional two way radio also has waterproof requirements, and the structure is more complex.
The battery of two way radios is divided into Ni-Cd, battery Ni-MH and battery Li-ion. There are many types in capacity, such as 600mAh, 900 mAh, 1100 mAh, 1300 mAh, 1500 mAh, 1700 mAh, 1800 mAh, 2000 mAh, 2200 mAh, 2400 mAh. Lithium battery costs more, and it is still in the development stage. Ni-Cd and Ni-MH batteries are widely used. Large capacity battery, consumers are recommended to adopt Ni-MH battery. The battery surface and the bottom shell are welded by ultrasonic wave, which is firm and reliable.
The function is that the radio is to be fixed on the belt, and the belt clip can be disassembled for the customer's use.
The antenna is divided into jacket and antenna core. Antenna coat adopted the TPU material whose performance is excellent, so the bending resistance and the aging resistance are good. The antenna core is generally connected with the host machine and easy disassembly.
The charger needs together with the fire cow to charge the battery or the whole machine. Generally, the structure of DC charging socket is composed of shrapnel, lights, buttons etc.. The DC socket is connected with the fire cow, and the shrapnel is connected with battery pole piece. The indicator light is to indicate the state of charge, the key is to discharge. Generally, the charger can recharge the battery and whole machine.
In addition, there are leather, walkie talkie headset, microphones, waterproof jacket and other accessory products.
Edit this frequency limit
In order to ensure that the majority of users do not be interfered with the interference and use the frequency resources reasonably, the National Radio Station Management Committee divided the use of frequency in which stipulated that different industries use the corresponding frequency range. Users should apply for frequency to the local radio management committee in the purchase of a radio.
(1) The ownership of each frequency band:
Public Security: 350MHZ; Coast: 220MHZ;
Amateur: 433MHZ; Cluster: 800MHZ;
Mobile phone: 900MHZ; Radio: 85-120MHZ;
TV set: 100 - 800MHZ.
(2) The introduction of the open band:
China: 409-410MHZ; USA: 462-467MHZ; Europe: 433MHZ.