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The walkie-talkie has extremely rich and interesting functions, and greatly improves people's work efficiency and reduces the cost of organization. Therefore, companies, security, schools, military and police have all invested in walkie-talkies. As a walkie talkie long range exporter, we will share with you must-known 30 functions of walkie talkie and their explanations.
The long-distance communication of the walkie-talkie can easily get instructions or answers from the other party without additional telephone charges. The long range on the market can reach about 10 kilometers or more. Before you use long range walkie talkie, it is a good way to understand these definitive explanation of walkie talkies terms. Let's start now.
A listening method used to receive weak signals. By pressing the dedicated key to forcibly connect the receiving signal channel, the operator can distinguish the faint sound in the speaker with his ears to achieve the purpose of listening.
If you want to hear the talk of all channels, a listening technique is actually adopted.
By pushing the specialized trick, the getting circuit gets the channel one at a time in a specific order for a period of time to pay attention to the indicator in the channel. If the receiving opportunity of each network is 100ms, ten networks could be browsed every next, that is actually, the checking velocity is actually 10ch/s.
Delete a channel from the scan list or add it to the scan list.
During the course of the checking procedure, the collection concern stations is checked to begin with.
To conserve electrical energy and expand the standby opportunity, the walkie-talkie will work in a period of time off and on for a time frame without transferring and also receiving as well as crucial procedures for an amount of time. This procedure is called power conserving mode. The ratio of the duration of power on and off is about 1:4. When an indicator is gotten or even there is a key procedure, the walkie-talkie instantly departures the power-saving condition and also gets in the usual condition.
Concerning this function, users are prohibited from transmitting signals on busy channels.
When this function is activated, you do not need to press the PTT button, you can directly start the transmission operation by voice.
This function allows users to select high power or low power according to actual conditions.
This function is used to restrict users from transmitting over time on a channel, and also to avoid damage to the walkie-talkie due to long-term transmission.
The strength of the noise in the received signal corresponds to the strength of the signal. The stronger the signal, the weaker the noise. The maximum noise and the minimum noise are divided into several files, and each file is called a level. The number of divisions is called the squelch level. The user can choose according to the actual situation.
Use this function to avoid receiving irrelevant calls.
Usage 2-TONE or even DTMF signaling to pick and also refer to as the matching walkie-talkie.
When using the regularity change function, the sending frequency and acquiring regularity of the walkie-talkie will be actually swapped, as well as the collection signaling will certainly additionally be alternated.
Use this function to prevent misoperation of keys.
When the walkie-talkie receives a correctly coded call, it sends a signal to the calling party in response to the call.
Push the committed alert key, the walkie-talkie will certainly discharge an alert audio along with the loudest sound or send a fixed alert code to other smartphones or even base stations.
When the patrol personnel arrive at the patrol point, the walkie-talkie will receive the inquiry signal from the patrol register, and then automatically start the registration operation, and send its own identification code and other information to the patrol register for registration, indicating that a patrol person has arrived at the place.
When utilizing the offline feature, the transferring frequency of the walkie-talkie becomes the like the getting regularity; the sending signaling is likewise converted to the like the obtaining signaling.
One or several parameters of the modulation signal are used to control the change of the parameters of the carrier. According to the different control parameters, modulation can be divided into amplitude modulation, frequency modulation and phase modulation.
It refers to the sound frequency of human speech, usually refers to the frequency band of 300Hz-3400Hz.
Carriers of useful signals such as voice, digital signals, and signaling, and high-frequency electromagnetic waves that are easy to transmit.
Channel refers to the frequency value occupied when transmitting and receiving. The frequency difference between adjacent channels is called the channel spacing. The specified channel spacing includes 25KHz (wideband), 20KHz, 12.5KHz (narrowband) and so on.
2-TONE, two-tone signaling, comprised of pair of audio signs, A Tone + B Tone. Deliver A Tone for a period of time, and after that send out B Tone after a period of time. Use 2-TONE signaling to choose to call the equivalent walkie-talkie.
5-TONE, 5-tone signaling, has the same function as two-tone signaling, except that it consists of five frequencies.
CTCSS, a continuous voice control squelch system, commonly known as sub-audio, is a technology that adds frequencies below the audio frequency (67Hz-250.3Hz) to the audio signal and transmits it together. Because its frequency range is below standard audio, it is called sub-audio. After the interphone demodulates the received signal at the intermediate frequency, the sub-audio signal is filtered and reshaped, and then input to the CPU. It is compared with the CTCSS frequency set by the unit to determine whether to turn on mute.
CDCSS, a continuous digital control squelch system, has the same function as CTCSS, except that it uses digital coding as a condition for mute to be turned on.
DTMF, dual-tone multi-frequency, consists of a high-frequency group and a low-frequency group, each of which contains 4 frequencies. A high-frequency signal and a low-frequency signal are superimposed to form a combined signal, which represents a number. DTMF signaling has 16 codes. Use DTMF signaling to choose to call the corresponding walkie-talkie.
In addition, there are power indicator, lighting and copying (copy data in other walkie-talkies of the same model) and battery power display functions. These two are easy to understand and are not explained. By understanding these functions and explanations, it is of great help to your use and troubleshooting. As a walkie-talkie user, it is very necessary to understand these. If you are also interested in remote intercom, plz free to contact us.
