l Band switch knob
l Power switch and volume control knob
l PTT button
l Monitor button
l External MIC / SP waterproof cover (with MIC / SP jack)
l Battery clip
There are many antennas, such as rubber antenna, hand-held rod antenna, car sucker antenna, fiberglass omnidirectional antenna, Yagi directional antenna, ceiling antenna.
Now a lot of radio frequencies are the whole paragraph. There are 136-174M, 400-470M. Although some manufacturers claim that they antenna is the whole paragraph, but it is better to distinguish the frequency of the antenna.
It’s better to use 400 high antenna for the whole paragraph radio, the frequency is above 450Mhz; It’s better to use the 400 low antenna while the radio frequency is below 420Mhz. Pay more attention on it when the users need a larger communication distance range.
Ordinary rod antenna not works well, The length of the rubber antenna is very important, is not the longer the better.
The price between high and low quality car sucker antenna is big. The former’s price is hundreds of yuan or even one thousand yuan, but the latter just cost 40 yuan. We suggest you to sell good quality, high sensitive antenna, it cost one hundred yuan about.
There are some walkie talkies with a display, while some ones not.
Normally the radios without display have 16 channels. For example, Motorola GP3188 is 4 channels, included 15 regular channels and one scanning channel.
There is 99 or 128 channels in the walkie talkie with display it means the walkie talkie can storage 99 or 128 groups frequencies max. Marine radio is 128 channels normally.
The indicator light is different while the radio is transmitting or receive. Generally, When the radio is not working, the indicator light is off. The light is red when it is transmitting and the light is green when receiving. While the received signal is not good, the green light is not always lit, but irregular jitter.
If the battery power is low, the red indicator light flashes to indicate that the battery is low, you should replace the battery, even though the radio is in standby mode. If you do not replace the battery in time, press the radio button will be "beep" long sound, and can not be used normally.
There are some different caliber on walkie talkie speakers.
Normally the bigger walkie talkie sound is better than the smaller one, as the audio output power is higher.
The battery is an important part of the walkie talkie. The battery can be divided into: nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries by different properties. These batteries are explosion-proof battery. The ordinary batteries can not be used in flammable and explosive gas environment.
The battery above have their own strengths, The nickel-cadmium battery performance the strongest resistance to high and low temperature, lithium battery is the weakest.
In the part of toxicity, the most toxic is nickel-cadmium battery while lithium battery is relatively light.
In natural discharge, the battery self-discharge is about 15%, the general self-discharge of lithium batteries is least. The battery should be fully charged before storage, charge before the end of time, otherwise it will affect battery life.
Memory: nickel-cadmium battery is the strongest, it is best to use up and then recharge. Nickel-metal hydride batteries is second and the lithium-ion battery memory of the smallest. But it should also run out before charge, that’s mean it can not be reused when red light flashing, excessive use can damage the battery.
In the number of charge: nickel battery charge and discharge the least number of times and the lithium-ion battery is the most, generally up to 1000 times. In the sales of the walkie talkie, it is recommended that users should pay attention to the details of the charge, preferably with two batteries, a reasonable use of battery life of up to three years.
There are desktop charger and portable charging, there are many low-end 3.6V battery walkie talkie with a portable charger, but professional walkie talkie are equipped with a desktop charger. Many low-end factory do not use AC adapters to reduce costs, BAOFENG walkie talkie are equipped with AC adapters.
Charger can be set fast charge and slow charge, I suggest to use slow charge. Because the fast charge have fast damage to battery, charging the current fast charge but the charge of poor saturation dissatisfaction. Slow charge current is small, full of time to be longer but the saturation of the charge is higher.
Some walkie talkie can also be equipped with car charger, but it is not just plug in the car cigarette lighter to take power only. Such as Motorola and Kenwood and other brands also have a row of charge, while the battery can charge six simultaneously.
Headset and microphone
In general, walkie talkie external microphone have headphones, hand microphone, shoulder microphone. Headphones is divided from the way into wearing, ear-bud headphones, ear hanging headphones, headband headphones.
Headphones from the way with the intercom connection is divided into column and row type, column type is divided into single and double column, double column is divided into wide and narrow hole.
Headphones from call initiation mode is divided into air vibration type, skull vibration type, throat vibration type, ear bone vibration type.
The biggest difference between hand microphone and shoulder microphone is that the former itself generally did not bring the speaker microphone but the shoulder microphone built-in speaker. Hand microphone and shoulder microphone is not only a call tool, sometimes built-in GPS and other peripherals.