Category: Camera

Radio stations are used to transmit short messages. Fast and free. The device is useful for professionals and amateurs. We personally observed how a married couple in a shopping center coordinated their movement with the help of 2 walkie-talkies.

 

Here we help you choose the right radio station. We sorted out their types, talked about the ranges and what affects the radio communication range. They are often not used in warm home conditions, so we paid attention to the reliability of the design.

 

Portable and stationary

Radio stations are portable and stationary. If you want to carry it with you, take a portable one. It is lightweight, compact and has a built-in battery how says in Midland" target="_blank" rel="noopener noreferrer">https://midland.manymanuals.com/">Midland manual. A stationary radio station is placed on a table or in a car interior. Away from the outlet, it is of no use, because it requires power.

 

Some radios are specialized:

1. Automotive;
2. Aviation;
3. River;

 

Automobile type is chosen by all drivers, truckers. The case is placed in a place under the radio 1DIN. Aviation is installed in the dashboard, there is an output for the aircraft headset. The river and sea have their own connector. The installation method is not important; the portable station can also be specialized. The main thing is to support the desired range.

 

Ranges

Сivil bands CB, LPD and PMR are allowed how says in Magnavox" target="_blank" rel="noopener noreferrer">https://magnavox.manymanuals.com/">Magnavox manual. To communicate in other ranges, you will need to obtain a license. Many walkie-talkies, when properly tuned, will pick up any frequency. You should not go on the air, let it work only for reception.

 

The VHF and UHF bands were occupied by commercial and government organizations, such as the Ministry of Internal Affairs and the Ministry of Emergency Situations. UHF has some frequencies allowed: LPD and PMR. Choose a portable radio with LPD and PMR bands. In the city, the range is higher for the UHF band, and in the forest - VHF. If you choose a dual-band radio, you will be able to communicate in 2 bands at the same time. 

 

Drivers, the same truckers, buy a station with a CB band. In a city with multi-story buildings, it does not cope so well with obstacles. Works best in an open field, on the track.

 

The aviation radio station operates in the range of 108-136 MHz. Marine - from 156 to 163 MHz. River - 300 and 336 MHz.

 

Range

The range of the radio communication depends on the power, but more on the environment. Obstacles in the path of radio waves nullify the most powerful walkie-talkie. The radio usually has a power of 4-5 watts, choose a minimum of 2 watts. It makes no sense to increase power beyond measure. To double the communication range, the power would have to be quadrupled. Only a radio station not designed for high power will die prematurely. It is better to install a long antenna.

 

Battery charge also affects range. It decreases following the flowing percentage of the battery charge. The best battery is lithium-polymer (Li-pol), because it tolerates sub-zero temperatures well. Lithium-ion (Li-ion) is also good because it has no memory effect. It is better not to take a device with a nickel-cadmium (NiCd) battery, it will quickly lose its resource. Choose a walkie-talkie with a lithium-polymer battery or lithium-ion, they are free from these disadvantages.

 

The quality of communication depends on the type of radio. At a digital radio station, it is higher. Also, the digital device has less background noise, interference, better sound quality. Communication is encrypted, and you can create a conference on one channel. The analog radio station is deprived of these advantages, but it is cheaper.

 

Frame

The class of a radio station can be determined by its body. If the manufacturer does not look for compromises, then the insides of the device will be reliably protected.

The body should be strong and embossed, and inside - a metal chassis. To better grip with the hand, and if it fell, it did not crash. Here are some differences in the protection of walkie-talkies of different classes:

• Budget - no protection, one plastic.
• Medium - IP54 shock, splash water and dust protection.
• Professional - NATO shockproof standard MIL-STD 810, protection against sparks, explosions. Withstands 30 minutes submersion in 1 meter IP7 water as says in Radio" target="_blank" rel="noopener noreferrer">https://radio-shack.manymanuals.com/">Radio Shack manual.

Control

The walkie-talkie can be with or without a screen and keyboard. They are needed for direct frequency input: you do not have to select from predefined channels. The presence of a keyboard does not always mean that there is a direct frequency input. Sometimes she just changes channels. If there is no keyboard, the channel is switched by turning the knob.

 

Sound is transmitted at the touch of a button. It is not necessary to press the button if there is a VOX function. With her, the radio goes on the air as soon as it hears a voice. The voice is gone - stops broadcasting.