Now there are some dual-mode walkie-talkies on the market, so what is a dual-mode walkie-talkie?

Dual mode walkie-talkies are different from traditional walkie-talkies. Traditional walkie-talkies are single-mode. Traditional walkie-talkies are either analog walkie-talkies, digital walkie-talkies, or poc walkie-talkies. The dual-mode walkie-talkie is 4g+ analog or 4g+ digital, and the dual-mode walkie-talkie has two antennas. Just like our Q12, it is a 4g+ analog UHF walkie-talkie, and QNH-530 is 4g+ analog VHF or 4g+ analog UHF.

QNH-800D is 4G + VHF or UHF digital DMR, or 4G + VHF or UHF analog.

This means that if you are using Q12, you can talk to poc walkie-talkies and UHF analog walkie-talkies. If you are using QNH-800D 4G+VHF digital version, you can talk to poc walkie-talkies. , You can also talk to the digital walkie-talkie.

Poc radio is the latest form of walkie-talkie, and many people don't know it very well. Now, I will give a specific introduction about poc radio.

First of all, Poc radio is different from the traditional analog walkie-talkie and digital walkie-talkie, its talk distance does not depend on its own transmission power. It depends on the communication signal of the network operator. The Poc walkie-talkie is based on the 2g/3g/4g mobile public network to implement calls. You can think of the Poc radio as a mobile phone, which requires a SIM card or WIFI to make a call.

Poc radio has the following advantages: 1. The distance is not restricted, and the cell phone signal covers the area, you can freely talk to each other.

2. Digital signal, clear sound quality and loud sound.

3. The confidentiality of the call is strong, and there will be no leakage of the same frequency.

4. Rich multimedia communication functions, which can realize voice, video and data services.

5. Low construction cost, relying on the public mobile network, no need to deploy base stations.

6. Scalable and powerful multimedia scheduling function.

Of course, it also has these disadvantages: 1. Where there is no network or the network signal is not good, this walkie-talkie is equivalent to a brick. It's useless.

2. Different providers may correspond to different public network platforms. Public network platforms are limited by the brand and cooperative operators, and a certain platform fee must be paid every year.

3. Poc radio needs to pay a certain amount of traffic fee every year. Mainly depends on how much traffic is used.

Most of the Poc radio systems are Android and Linux. You can even install your familiar applications on the Poc radio of the Android system, such as WhatsApp, just like a mobile phone. The public network platforms of Poc radio from different suppliers are quite different. Walkie-talkies with different platforms cannot make calls. There may be different platforms under one supplier. The cost of the platform is also different. And a walkie-talkie corresponds to a platform account. When purchasing Poc radio in large quantities, you also need to pay the same amount of platform account fees. Therefore, Poc radio is more suitable for those who have higher requirements for long-distance communication and have certain needs for multimedia data communication such as video and data. For example, our Q8, which has a camera function, can also send photos to the caller, it is very suitable for people who need to take pictures.

The traditional analog walkie-talkie is a communication mode in which voice, signaling, and signals are modulated onto the carrier frequency of the walkie-talkie in a continuous wave manner, and optimized processing such as amplification. It has the advantages of mature technology, complete system and relatively low cost.

The digital walkie-talkie is a digital communication mode that digitizes the voice signal, uses a specific digital encoding method and a specific baseband modulation form, and uses a digital signal processor for optimization.

The digital walkie-talkie is a digital communication mode that digitizes the voice signal, uses a specific digital encoding method and a specific baseband modulation form, and uses a digital signal processor for optimization.

The first is to make better use of spectrum resources. Similar to cellular digital technology, digital walkie-talkies can load more users on a designated channel and increase spectrum utilization. This is a solution to frequency congestion.

The second is to improve the call quality. Because digital communication technology has an error correction function in the system, compared with analog walkie-talkies, it can achieve better voice and audio quality in a wider range of signal environments, and it will receive less audio noise and more sound. Clear.

The last point is to improve and improve the integration of voice and data, and to change the weakness of the control signal that decreases as the communication distance increases. Compared with similar integrated analog voice and data systems, digital walkie-talkies can provide better data processing and interface functions, so that more data applications can be integrated into the same two-way wireless communication base station structure, providing voice and data services The integration is more complete and more convenient.

Compared with traditional analog walkie-talkies, it has strong voice anti-interference ability, high confidentiality, narrower channel bandwidth, and stronger data transmission ability.

Many customers want to know what walkie-talkie has the farthest call range. Let's talk about it today. Walkie-talkies are divided into analog walkie-talkies, digital walkie-talkies and poc walkie-talkies. For analog walkie-talkies and digital walkie-talkies, the distance of the call depends on the power of the walkie-talkie, the antenna, and the conditions of the surrounding environment. The distance of the analog car-mounted walkie-talkie is generally better than that of the handheld walkie-talkie. The poc walkie-talkie uses wifi or sim card, which is similar to a mobile phone. As long as there is a wifi signal or an operator signal, you can talk. Therefore, the poc walkie-talkie can realize a nationwide call or even a global call. Therefore, the voice range of the poc walkie-talkie is the farthest.This Q8 is such a PoC walkie talkie.

What is mobile radio? What’s the difference between handheld walkie talkie ( handheld radio) and mobile radio? Let’s see what their differences.

A sales person or radio repair shop would understand the word mobile to mean vehicle-mounted: a transmitter-receiver (transceiver) used for radio communications from a vehicle. ( From Wikipedia ).

Output:

Handheld radio: Normally the output is less then 5 watts, talk range is short.

Mobile radio: The output range from 15 to 100 watts, talk range is longer then handheld radio.

Power supply:

Handheld radio: Battery power supply. The radio normally can change the replacement battery easily.

Mobile radio: Use Household Power Supply ( need Transformer ) or Cigarette Lighter power supply ( QYT KT-8900 series radio use cigarette lighter power supply ).

Installation location:

Handheld radio: Put in walkie talkie case, easy to carry

Mobile radio: Need a fixed place in car or home, need the power cable

Team use:

Handheld radio: Suit for short distance, when user moving fast, the signal maybe worse then standing

Mobile radio: Talk range is longer, when the vehicle moving it works better then handheld radio

Price:

Handheld radio: The price is lower then mobile radio, normally the price is several to dozens dollars

Mobile radio: Generally the mobile radio cost is higher than handheld radio. Usually the price is tens to hundreds of dollars

Misunderstanding:

1. Don’t use the handheld radio connect to the cigarette lighter as mobile radio. In this way, the machine is very easy to be damaged.

2. Don't blindly seek the limit. The maximum output power of the radio is 100W. You should not use it always on 100 watts. Although it can be used normally, it also causes damage to the radio.

Walkie talkies are essential communication devices in many industries and recreational activities. However, their performance can be significantly influenced by various weather conditions. Understanding these effects can help users optimize their communication strategies in different environments.

Rain and Humidity
Rain and high humidity can have a noticeable impact on walkie talkie signals:

Signal Attenuation: Water droplets in the air can absorb and scatter radio waves, reducing signal strength.

Reduced Range: In heavy rain, the effective communication range of long range walkie talkies may decrease.

Interference: Raindrops hitting antennas can create static noise.

Mitigation: Use waterproof devices and consider higher power settings in rainy conditions. For better performance, especially in challenging weather, opting for high power walkie talkies can significantly enhance communication clarity.

Fog and Mist
Fog and mist, while less impactful than rain, can still affect signal propagation:

Slight Signal Absorption: Water particles in fog can absorb some of the radio waves.

Minimal Range Reduction: The effect is usually less severe than rain.
Mitigation: Generally, standard operating procedures are sufficient in foggy conditions.

Snow and Ice
Snow and ice can have varying effects:

Signal Reflection: Snow can sometimes reflect radio waves, potentially extending range in some directions.

Antenna Icing: Ice buildup on antennas can detune them, affecting performance.

Cold Battery Issues: Extreme cold can reduce battery life and efficiency.

Mitigation: Keep batteries warm and ensure antennas are free of ice buildup.

Wind
Wind itself doesn't directly affect radio waves, but it can indirectly impact communication:

Antenna Movement: Strong winds can move antennas, affecting signal consistency.

Background Noise: Wind can create noise when blowing across microphones.

Mitigation: Use wind shields on microphones and ensure antennas are securely fastened.

Temperature and Pressure Changes
Extreme temperatures and pressure variations can affect walkie talkie performance:

Thermal Expansion/Contraction: Can affect electronic components.

Pressure Changes: May impact the ionosphere, affecting long-range communications.

Mitigation: Use devices rated for extreme temperatures when necessary.

Lightning and Thunderstorms
Thunderstorms pose significant challenges:

Electromagnetic Interference: Lightning can cause severe radio interference.

Safety Concerns: Using walkie talkies in thunderstorms can be dangerous.

Mitigation: Avoid using walkie talkies during thunderstorms for safety reasons.

Clear Skies and Optimal Conditions
Ideal weather for walkie talkie use:

Maximum Range: Clear, dry conditions often allow for the best signal propagation.

Minimal Interference: Less atmospheric moisture means clearer signals.

Weather conditions play a crucial role in walkie talkie performance. Rain, snow, and extreme temperatures can all affect signal strength and clarity. Users should be aware of these factors and adjust their usage accordingly. In critical operations, having backup communication methods or higher-powered devices, like professional grade walkie talkies, can be beneficial. Regular maintenance and proper storage of walkie talkies can also help mitigate weather-related issues, ensuring reliable communication in various environmental conditions, especially when utilizing high power walkie talkies for enhanced reliability.

Walkie talkies, also known as two-way radios, remain one of the most reliable communication tools in situations where cellular networks and internet connections aren't available. One key feature of walkie talkies that often gets overlooked is the number of channels they support. But why is the number of channels important, and how does it affect your choice of device? Let’s explore this critical aspect in more detail.

How Many Channels Do Most Walkie Talkies Have?

Most consumer-grade walkie talkies typically support 22 channels, especially in countries like the U.S. where radios operate on the FRS (Family Radio Service) and GMRS (General Mobile Radio Service) frequencies. However, professional or commercial-grade walkie talkies, such as those offered by QYT Electronics Co., Ltd., may support hundreds or even thousands of channels. These advanced models are often programmable, allowing users to customize channels to specific frequencies or communication needs.

Why Does the Number of Channels Matter?

The number of channels supported by a walkie talkie determines how flexible and interference-free your communication can be. Here's why it matters:

Avoiding Channel Overlap: With more channels, you have a better chance of avoiding interference from other users in crowded areas, such as events, construction sites, or urban settings. For example, a device with 16 or fewer channels may experience congestion, while a walkie talkie supporting 50+ channels offers more options for clear communication.

Custom Use Cases: For professionals, such as security teams or emergency responders, having access to dedicated channels is crucial. Businesses may assign specific channels for teams working on different tasks, ensuring privacy and efficient communication.

Access to Specialized Frequencies: High-end walkie talkies, like those from QYT, often support UHF (Ultra High Frequency) or VHF (Very High Frequency) bands across a wide range of channels. This capability allows users to operate on licensed frequencies for better range, clearer signals, and reduced interference.

Choosing the Right Walkie Talkie for Your Needs

When selecting a walkie talkie, consider how many channels you'll realistically need. For casual users, such as hikers or families on a camping trip, devices with 22 channels are usually sufficient. However, if you’re part of a business or industry that requires secure and uninterrupted communication, opting for a programmable model with hundreds of channels is a wise investment.

At QYT Electronics Co., Ltd., we offer a variety of walkie talkies designed for both consumer and professional use. Our devices are known for their reliability, wide channel support, and advanced features, making them ideal for industries like construction, logistics, and security.

Conclusion

The number of channels a walkie talkie supports may not seem like a big deal at first glance, but it plays a significant role in ensuring clear, uninterrupted communication. Whether you're a casual user or a professional, understanding the importance of channels can help you choose the right device for your needs. With QYT’s high-quality walkie talkies, you can enjoy enhanced connectivity and performance, no matter where you are.

1. What is a Two Way Radio?

A two way radio is a device that allows for two-way communication, meaning you can both send and receive messages. It operates using radio waves and can be used for both short and long-range communication. The QYT KT-9900 mobile radio, for example, is a popular choice due to its efficient communication features and durable design.

2. How Does a Two Way Radio Work?

A two way radio works by transmitting radio signals between a transmitter and a receiver. When you press the “talk” button, the two way radio converts your voice into a radio signal that is broadcast over a specified frequency. The receiving unit then picks up the signal and converts it back to sound. The QYT KT-7900D mobile radio supports multiple channels and frequency bands, offering a wider communication range, making it perfect for users who need continuous contact.

3. What are the Advantages of Using a Two Way Radio?

The main advantages of a two way radio include its reliability and cost-effectiveness. Unlike mobile phones, two way radios do not rely on cellular networks, making them useful in remote areas without phone service. Moreover, two way radios are easy to use, require minimal maintenance, and provide instant communication over long distances. The QYT CB-58 handheld radio, for example, offers excellent signal reception, making it suitable for a variety of environments, especially for users who need a rugged device.

4. Can a Two Way Radio Be Used for Long Distances?

Yes, the communication range of a two way radio can vary greatly depending on the model and frequency. Some two way radios are designed for short-range communication (less than a mile), while others, especially those using lower frequencies, can cover several miles or more. For example, the QYT KT-7900D can cover wider areas with multiple frequency bands, suitable for users needing long-range communication. However, obstacles such as buildings and trees can affect signal transmission.

AC cooling fan introduction - Chungfo Electronic

AC cooling fan is the major aspects of different varieties of industrial products, including electrical machinery and electronic digital products which all demands cooling fan as the major device for energy managing. By developing the environment flow, cooling fan provides cool air to decrease the temperatures of your industrial equipment, also, will help the industrial electrical or electronic digital projects to hold our prime effectiveness as well as its performance is definitely not minimized due to the heat produced.

As the part of the electronic digital components, AC cooling fans are widely developed in the home appliance or different varieties of industrial electronic digital machinery. It is because AC coolinf fan offers stable air movement consistently, which assists to stable the machinery performance, hence the machinery is definitely not from operate due to the overheat.

AC cooling fan works with AC power, and by operating of your impellers to generateair flow to decrease the temperatures of your machinery, which will help prevent the machinery from overheat. The many between AC fan and DC fan is – AC cooling fan air flow is stable and consistently, that may typical the machinery temperatures. Also, by changing the fan speed to meet the objective of energy managing.

AC coolinf fan could be categorized in 2 major models, depending on its design –

AC axial fans – the air flow it creates is vertical with the fan impeller, the air in and out is in the same direction. AC axial fans’ main advantages are – big air flow, easy assembly, high efficiency, and high speed. With multiple product selection with different air flow and speed, it allows the users to choose the axial fans meets their requirements most. External rotor axial fans provides stronger air flow and higher speed, and with metal impeller design, it fits better for customers who need to use the fans in a rugged circumstance.

AC cross-flow fan the air-in direction is horizontal with air-out. The design of impeller and air-out area is narrow, which fits most to install on the flat machines, like elevators, air conditioners,electronic equipment and so on.

If you need to know more about Chungfo AC fan,please don’t hesitate to contact with us.

AC, DC, EC fans Features

When it comes to cooling fans, it is estimated that everyone is very familiar with them. They are indispensable in our life, such as household appliances, electronic products, digital computers, medical equipment, etc. They will be used as long as they need cooling and exhausting. Cooling fans can be divided into AC fans, DC fans and EC fans. Here, I will explain the difference between AC / DC / EC fans:

AC fan is what we call AC cooling fan. The principle and manufacturing method of this kind of fan are very simple. Its characteristic is that the power frequency is fixed and will not change with the positive and negative voltage.

DC fan and EC fan belong to DC cooling fan, but there are some differences between them. A simple summary: DC input is DC, EC can input AC, which converts AC into DC.

Advantages of AC fan:

1. Provide stable and continuous air volume.

2. Hot air can be discharged and colder air can be inhaled.

Advantages of DC fan:

1. Minimal electromagnetic interference.

2. Low energy consumption.

Advantages of EC fan:

It has the characteristics of high intelligence, high energy saving, high efficiency, long service life, low vibration, low noise and continuous work.

We are Chungfo, a professional manufacturer of cooling fans. We prodece DC axial fan, DC blower fan, DC frameless fan, AC fan, AC / DC cross flow fan, EC fan and so on.