#transmission module

[g-nicerf]

3KM Transmission Distance | Low Latency | 48K Sampling Audio Transmission Module - SA356 High Power Transmission Module

In wireless audio applications, long-distance audio transmission is widely needed in many fields, such as large conference systems, public broadcasting, outdoor events, and music performances. To meet these demands, audio transmission modules must have several key features, including long-distance transmission capability, high sound quality, low latency, stability, and anti-interference ability. In order to solve the problem of ultra-long-distance audio transmission, NiceRF has launched a high-power transceiver module solution for audio transmission.

For the SA326 series module, SA356-TX is a 5W transmission module, which can be paired with the SA326-RX receiver module. The SA356-TX is an amplified 5W version of the SA316-TX application board. It starts working as soon as it is powered on, and users can directly set the module's frequency, volume, and other parameters using PC software, significantly simplifying the development process. This product is widely used in scenarios requiring high audio quality.

Advantages of Audio Transceiver Module

1.Long-Distance Transmission: transmitting range 3000 meters in open area

Transmission distance is a crucial parameter for long-distance audio transmission. The SA356 module, equipped with a 5W transmission power, can achieve a transmission distance of 3000 meters in open, unobstructed environments. This makes it highly suitable for applications requiring wide coverage, such as large outdoor events and public square broadcasting.

2.Sound Quality Requirements: signal-to-noise ratio is 96 dB , the frequency response range from 20 Hz to 20 kHz.

High-fidelity audio transmission is essential for long-distance audio applications. The SA356 module has a high signal-to-noise ratio 96 dB, which can significantly reduce noise during transmission and ensuring purity of the audio signal. Additionally, its frequency response range from 20 Hz to 20 kHz covers the entire audible spectrum, from low bass to high treble, ensuring comprehensive transmission fidelity. This is particularly crucial for scenarios such as music performances and conference speeches that require high-quality audio, delivering an exceptional auditory experience.

Low Latency: Latency is less than 3ms

In real-time audio applications, latency is a critical factor, whether for live performances or video conferences where audio-video synchronization is crucial. The SA356 module maintains latency from microphone input to audio output within 3 milliseconds, almost negligible. This ensures perfect synchronization between sound and visuals, enhancing user experience and making it highly suitable for real-time applications.

Stability and Anti-Interference Capability: The module utilizes digital modulation scheme pi/4 DQPSK, occupying a bandwidth of less than 300 KHz.

In long-distance audio transmission, the stability of the signal and its resistance to interference directly impact audio quality. The SA356 module utilizes pi/4 DQPSK digital modulation, known for its strong anti-interference capabilities and transmission stability. Additionally, it occupies a bandwidth of less than 300 KHz, greatly enhancing spectral efficiency and reducing the likelihood of interference. This allows the SA356 module to maintain stable audio transmission even in complex wireless environments.

5.Transmission Rate and Sampling Rate：Transmission Rate 204.8 Ksps, Sampling Rate 48 KHz

To achieve high-quality audio transmission, transmission rate and sampling rate are crucial parameters to be considered. The SA356's 204.8 Ksps transmission rate and 48 KHz sampling rate ensure high fidelity and clarity of audio signals during transmission. A high sampling rate captures more sound details, providing a richer and more realistic audio experience, meeting the requirements for professional audio transmission.

SA356 Module Features

UHF frequency band：500 MHz

The transmission distance is 3000 meters in the open area

Audio signal to noise ratio: 96 dB

Frequency response: 20 Hz-20 KHz

The delay from microphone input to audio output is less than 3ms

Digital modulation method: pi/4 DQPSK

Occupied bandwidth: <300 KHz

Transmission rate: 8 Ksps

Sampling rate: 48 KHz

Electrical Characteristics

In summary, the SA356 audio module is very suitable for long-distance audio transmission in terms of transmission distance and sound quality. It is suitable for wireless microphones, large-scale outdoor activities, public broadcasting and other systems

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

[ask-widesmile-theredcaboose]

@live-wire-electra

Breaker breaker, Hello. I heard somebody likes little o me? ;]

Well good news good buddy, I quite like anyone who likes me too!

Oh and if you ever need a Caboose like me, I'm always on the radio modulating the mike so pick a radio channel and I'm sure I'll be on it.

Mod Talk: Hope this is okay for an interaction and wasn't to bothersome or anything like that. I found your blog through a mutual of mine and I couldn't help but send something as CB. lol 😅

Anyway ya don't got to respond and I understand if you do or don't.

[chinasopofiber]

External Modulation Optical Transmitter for Data Transmission #wdm #ampl...

[g-nicerf]

New Product: Next Generation Full-Duplex Audio Intercom Module SA618F22-C1

The SA618F22-C1 is an upgraded wireless digital and audio all-in-one full-duplex transmission module from NiceRF, supporting 8-channel concurrent high-quality calls. Users can not only achieve wireless data transmission via the serial port but also transmit voice signals through I2S digital audio or analog audio interfaces. This module is equipped with a high-speed microcontroller, echo cancellation circuit, ESD protection, high-performance RF chip, and amplifier, utilizing wideband spread spectrum technology, ensuring low power consumption, long-distance transmission, and flexible frequency adjustment. Additionally, the SA618F22-C1 is equipped with a hardware watchdog chip to prevent system crashes and features reverse polarity protection, overcurrent protection, and overvoltage protection circuits, ensuring the safety and stable operation of the device in various environments.

Core Features of the SA618F22-C1:

It can pass CE and FCC certifications: The SA6X8 series can obtain CE and FCC certifications, ensuring compliance with international safety and performance standards. This enhances the product's market competitiveness and guarantees its legal and compliant use in various regions.

SA618F22-C1 Module Features

 Frequency Band UHF 420-510MHz(Customizable 150-960 MHz)

Up to 8 devices transmit simultaneously ( Receive unlimited)

Echo cancellation function

VOX function

High integration and compact size

Low power consumption in sleep mode

1-3KM transmission distance in the open area

Supports 2 to 8 people in high-quality simultaneous calls

Shorter call latency

I2S Digital audio+analog audio

 Line In + Mic input

Full-duplex data transmission

 Multi-level wireless repeating

 Support OTA &Serial upgrade

 High reception sensitivity: -117 dBm

Applications

Headset Walkie-talkie

Handheld radio

The newly released SA618F22-C1 has a power output of 160mW, and we will soon launch the SA618F30-C1, a high-power intercom module with a power output of 1W. The SA618F30-C1 will also comply with CE and FCC certifications. All modules developed independently by Siwei Wireless are produced and tested using lead-free processes, meeting RoHS and REACH standards. We welcome inquiries from manufacturers.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

[ask-widesmile-theredcaboose]

"Heard of anything interesting, Lately?"

@stcnegaze

\\As the voice came over their headset CB could here a mumming or buzzing like feed back over the radio channel. CB sits up slightly and adjust there mic.//

Well hello there, what a pleasant surprise. I didn't expect to hear a Juice Truck over the line. I can hear the humming of your power.

An if I must say, there hasn't been much to keep eyes on around here lately, just some regular old railway things.

But I have had a few braker brakers so I've been modulating over the mike with some others that have been rolling through the burg.

So what about you Juice Jug, you rolling through the burg or calling in from else where?

[g-nicerf]

New Product Launch: Brand New 8-Channel Concurrent Full-Duplex Data Transmission Module with Ultra-Low Latency Wireless Communication

NiceRF has newly launched the SA618F30-FD, an 8-channel full-duplex wireless data communication module capable of handling up to 8 transmitters simultaneously without interference. It is designed for scenarios where multiple transmitters operate simultaneously in complex environments, minimizing the need for retransmissions and greatly reducing the chances of interference or being interfered with. The module combines LoRa modulation with 1W output power and features a low-power design for receiving and sleep modes, making it ideal for long-distance wireless IoT applications.

The SA618F30-FD full-duplex data transmission module integrates a high-speed microcontroller, high-performance RF transceiver chip, and power amplifier. It offers a standard serial port for easy communication with the module, allowing users to quickly set module parameters and control transmission and reception functions. Users simply need to connect the module to a serial port to achieve data transmission. Its ultra-compact size also allows for easy integration into various handheld devices.

Technical Specifications of SA618F30-FD

 Frequency Band 410~490MHz (Customizable 150-960 MHz)

 Up to 8 devices can transmit simultaneousl (no limit on reception)

 Echo cancellation function

8-way dynamic changes

Support OTA &Serial upgrade

3-4KM transmission distance in the open area

 High reception sensitivity: -117 dBm

Highly integrated and compact size

Core Advantages of the SA618F30-FD Full-Duplex Data Transmission Module:

The SA618F30-FD module introduces a new full-duplex feature, allowing simultaneous data transmission and reception, making the communication process more efficient. In traditional half-duplex communication, transmission and reception must alternate, but full-duplex eliminates this limitation, enabling continuous, real-time communication.

Full-Duplex Communication with 8-Channel Concurrent Operation (without Interference): Supports 8-channel concurrent communication where the receiving end is unrestricted, greatly reducing the likelihood of retransmission. Multiple transmitters can operate simultaneously without interference, ensuring seamless connection and smooth operation even when multiple sources are transmitting data at the same time.

Low Latency: The module is optimized for minimal transmission delay. Compared to other half-duplex data transmission modules, the full-duplex module achieves a latency rate of less than 50ms. 

Long-Range, Low-Power Communication: The SA618F30-FD utilizes LoRa modulation technology, combined with 1W output power, enabling transmission distances of 3-4 kilometers in open environments. Its low-power design ensures efficient performance in both receiving and sleep modes.

ESD Protection: Built-in electrostatic discharge (ESD) protection prevents damage caused by static electricity, enhancing the durability and stability of the module.

Customizable AES Encryption: Users can customize AES encryption functionality based on their needs to enhance the security of data transmission.

Dynamic 8-Party Changes: The module allows up to 8 people to communicate simultaneously, with the added flexibility of allowing participants to join or leave the conversation at any time, providing users with great adaptability.

Other Features of the SA618F30-FD Full-Duplex Data Transmission Module:

Efficient Transmission Performance

The SA618F30-FD utilizes advanced LoRa modulation technology, combined with 1W output power, achieving a transmission distance of up to 3-4 kilometers in open environments. The module also boasts a high reception sensitivity of -117 dBm, ensuring stable data reception even under weak signal conditions.

High Integration and Low Power Consumption Design

The module integrates a high-speed microcontroller, high-performance RF transceiver chip, and RF power amplifier, creating a highly integrated design that significantly reduces system size and cost. Additionally, the SA618F30-FD's low power consumption design ensures energy efficiency during long-term operation, extending the device's lifespan.

Flexible Configuration and Upgrades

The SA618F30-FD module offers a standard serial port, allowing users to quickly configure module parameters and control its transmission and reception functions through a simple serial connection. Moreover, the module supports OTA (Over-the-Air) and serial upgrades, enabling users to easily expand functionality and optimize performance without hardware changes.

Multiple Protections, Robust and Durable

The module features built-in ESD electrostatic protection and both software and hardware crash protection mechanisms, enhancing its durability and stability to withstand various harsh environments.

Application Areas of the SA618F30-FD Module:

AGV (Automated Guided Vehicles): In AGV systems, the low-latency full-duplex data transmission capability ensures real-time communication between the AGV and the control center.

Tower Crane Systems: For tower crane operations, the high-power and long-distance communication capabilities ensure the real-time and reliable control of the crane. The full-duplex function allows operators to simultaneously send and receive commands, preventing safety hazards caused by communication delays or interruptions.

Multi-Channel Full-Duplex Data Transmission Applications: In complex scenarios where multiple devices need to communicate simultaneously, the 8-channel concurrent full-duplex functionality is critical, allowing devices to communicate at the same time without interference.

The new product is now available. We welcome users to visit NiceRF official website : www.nicerf.com to learn more about the advantages of the SA618F30-FD module and its innovative technology.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).

[g-nicerf]

Efficient Transparent Transmission and Stable Communication - Functions and Applications of the SV651 Module

SV651 is an Industrial class & highly-integrated RF module. TTL / 232 /485 can be chosen corresponding to SV651-TTL / SV651-232 / SV651-485. SV651 has good sensitivity and 500mW output power to achieve long RF range and reliable RF communication. To avoid the interference, SV651 provides 40 frequency channels and configurable Net ID. SV651 is flexible but easy to use , it comes with many parameters, such as: frequency, data rate, output power, Net ID, Node ID. Users can configure the parameters through PC or customer’s own device.

Core Features of the SV651 Wireless Transparent Transmission Module

Frequency Band Flexibility:

Supports multiple frequency bands including 433 MHz, 470 MHz, 868 MHz, and 915 MHz.Customizable to meet specific application needs of the user.

High Anti-Interference:

Built-in anti-interference mechanisms effectively resist electromagnetic and other wireless signal interferences.Ensures the stability and reliability of communication.

Long-Distance Transmission:

Capable of transmitting up to 2800 meters in open environments.Especially excels in long-distance and penetration capability at low data rates (1.2Kbps), making it suitable for remote wireless communication needs.

Built-in Software Watchdog

Equipped with the ability to automatically monitor system faults and perform reboots, this feature ensures that the module can continue to operate stably even under abnormal conditions. This enhances the module's reliability and minimizes downtime in critical applications.

Built-in Hardware Anti-Crash and Self-Reset Circuit

Designed to resist strong external interference signals, this feature ensures the stability and reliability of the module in harsh environments. It safeguards the module's performance against unexpected disruptions, maintaining consistent operation even under challenging conditions.

Data Transmission Stability

Adopting GFSK modulation mode ensures the stability and reliability of data transmission. Meanwhile, the module supports RSSI signal strength monitoring, enabling real-time signal strength monitoring to optimize data transmission.

Other Features of the SV651 Wireless Transparent Transmission Module

High Reliability and Stability:The module is designed with a focus on reliability, making it suitable for industrial-grade applications and ensuring long-term stable operation.

Easy Configuration:Configuration is simple and convenient, allowing users to modify serial port and RF parameters easily through PC software or online settings.

Industrial-Grade Design:Conforms to industrial-grade standards with a wide operating temperature range (-40°C to +85°C), ensuring stable performance in various harsh environments.

Multi-Channel Support:Supports up to 40 communication channels, allowing users to select different channels for communication.

Network ID Configuration:Features a 4-byte network ID function, supporting multiple modules to work independently within the same network without interference, suitable for complex network environments and multi-node communication applications.

Wide Voltage Range:Operates within a voltage range of 4.0 to 6.5V, allowing the module to adapt to different power environments, broadening its application scope and suitability for various power supply situations.

What is Transparent Transmission? Applications of Transparent Transmission in Communication

Transparent transmission refers to the process of data transmission where the data itself is not altered, modified, or converted in any way during the transfer. In simple terms, the format and content of the signal remain unchanged after transmission.

Transparent transmission is a communication protocol that defines the format, encoding, and transmission speed of data during the transfer process. The main advantage of this protocol is that it does not interfere with or modify the data, ensuring its accuracy and thereby enhancing the reliability of data transmission.

Transparent transmission is commonly used in serial interface communications, such as serial port communication and data communication lines.

Transparent transmission has been widely applied in many fields, such as wireless communication, network communication, and the Internet of Things (IoT). It not only meets various types of data transmission needs but also effectively ensures the integrity and accuracy of the data.

What is the Process of Transparent Transmission?

Initialization and Parameter Setting

Configure the wireless module to transparent transmission mode

Data Transmission

The sender transmits the data to be sent to the wireless module via a serial port or other interfaces.

Data Packaging and Transmission

After receiving the data, the wireless module packages it into a specific frame format and transmits it to the receiving end through the wireless channel.

Data Reception and Unpacking

After the receiving wireless module receives the data frame, it automatically removes the frame format and passes the original data to the upper application through a serial port or other interfaces.

The advantages of transparent transmission are mainly reflected in the following aspects

Simplifies the development process

In transparent transmission mode, the wireless module does not process the transmitted data in any way. Developers do not need to focus on the underlying communication details and can concentrate solely on the transmission of upper-layer application data, thereby greatly simplifying the development process.

Ensure data integrity

Transparent transmission ensures data integrity and consistency, avoiding the risk of data modification or loss during the transmission process.

Improve communication efficiency

Since no additional processing of data is required, transparent transmission can reduce delays and overhead in the communication process, thereby improving communication efficiency.

High flexibility

Transparent transmission mode is suitable for various types of data transmission. Whether it is text, images, or audio and video data, it can all be transmitted through transparent transmission.

For details, please click：https://www.nicerf.com/products/ Or click：https://nicerf.en.alibaba.com/productlist.html?spm=a2700.shop_index.88.4.1fec2b006JKUsd For consultation, please contact NiceRF (Email: sales@nicerf.com).