#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]

SA628F39 8W High Power Full-Duplex Audio Transmission Module

[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]

LoRa MESH Network: Wireless Transmission Modules for Multi-Scenario Applications

[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).