50 Watt FM Transmitter for Community Radio, Church & Campus Broadcasting
Specifications
Product Introduction
50W FM Transmitter — Professional Grade · 1U Compact
Overview
The 50W FM Transmitter is the definitive professional-grade solution for medium-range and community coverage. Engineered with an oversized 50W MOSFET, this unit never runs at its absolute limit, ensuring relentless 24/7 operation in any climate without overheating. Optimized for US FM Translators and international deployment, strictly meeting FCC and EU/CE technical standards.
Performance & Technology
RS-50W Transmitter is a Family of FM stereo Transmitters that guarantees a superior transmission quality and top performances. Output power from 0W to 50W, using High Efficiency latest LDMOS technology, housed into an ultra-compact cabinet of only 1U height.
Build Quality & Reliability
RS is now presenting a new version of 50W FM transmitter with well made chassis and fine workmanship. It has professional stereo sound with excellent separation, very small distortion and good Signal/Noise ratio. The advanced temperature and SWR protection mode keep the transmitter in safe during operation.
Versatility & Applications
This transmitter can be used as ultra-compact stand-alone station, as well as a driver in complex high power transmitters and N+1 systems. For any application, RS is the ultimate solution that meets the most demanding customer requirements and guarantees professional features at an affordable price.
Audio & Smart Features
If you’re seeking a transmitter that balances powerful broadcasting with strict legal compliance, this version is your definitive choice. It eliminates complexity for both new and experienced broadcasters. The unit features automatic audio level adjustment, ensuring your 150 watt transmitter always adheres to state regulator specifications. Start broadcasting legally and effortlessly.
Remote Control & Connectivity
- REMOTE CONTROL BY TCP/IP: WEB + SNMP OF ALL SIGNAL PARAMETERS.
- EXTERNAL 10MHz and 1PPS SYNCHRONIZATION FOR USE ON SFN APPLICATIONS.
- SEVEN SELECTABLE COMPLETE SET-UPS: READY FOR USE IN 7+1 SYSTEM.
Compliance & Configuration
- COMPLIANT WITH ALL THE STANDARD: ETSI – CCIR - FCC.
- RF Harmonics and RF Spurious exceed ETSI/EBU/CCIR/FCC requirements.
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How Far Can a 50W FM Transmitter Reach?
Based on actual field tests conducted by our engineering team, a 50W FM transmitter installed with a 30-meter antenna height can typically achieve a coverage radius of approximately 3–5 kilometers in normal urban environments with standard population density.
| Environment | Estimated Coverage | Typical Application |
|---|---|---|
| Urban Areas | 3 – 5 km | Community radio, schools, churches |
| Open Rural Areas | 4 – 9 km | Farms, villages, outdoor broadcasting |
| Elevated Antenna Installations | Up to 10 km | Hilltop installations, small-town FM stations |
* Actual FM coverage depends on antenna height, terrain, antenna gain, cable loss, and surrounding interference
What You Need to Start Your FM Station
Building a broadcast-quality FM radio station requires three essential components working together. Missing any one will prevent your station from going on-air.
FM Transmitter (50W)
Converts your audio signal into an FM radio frequency. The Risheng 50W unit handles this with studio-grade precision.
FM Broadcast Antenna
Radiates the RF signal into the air. A 1-bay FM dipole antenna is recommended for 50W installations. Antenna height is the #1 factor affecting coverage distance.
50 Ohm Coaxial Cable
Connects the transmitter to the antenna. Low-loss cable (LMR-400 or 7/8" foam coax) minimizes signal loss between your 50W transmitter and the antenna.
Pro Tip: We offer complete 50W FM station kits including transmitter, antenna, and coaxial cable -- everything pre-matched and tested at the factory. Contact us for bundle pricing.
Features of our 50W FM transmitter
Intelligent Overheat Protection
The 50W FM transmitter automatically switches to protection mode when the internal temperature exceeds the normal operating range. Visual alarm messages and audible alerts help ensure safe and stable FM broadcasting operation during continuous use.
VSWR Protection System
Built-in SWR protection helps prevent damage caused by antenna mismatch or poor RF connection. When abnormal VSWR values are detected, the transmitter automatically activates protection mode with on-screen alarm notifications and warning sounds.
Cooling Fan Failure Alarm
The transmitter continuously monitors fan operation status. If the cooling fan stops working or encounters a fault, an automatic alarm message will appear on the display to protect the transmitter from overheating.
Adjustable RF Power Output
The RF output power is continuously adjustable, allowing flexible FM broadcasting configurations for different coverage requirements. Users can easily fine-tune the transmitter power output according to antenna setup, installation environment, and local broadcasting needs.
Advanced Digital FM Modulation Technology
The transmitter uses a fully digital FM modulation architecture combining DSP and DDS technologies for precise audio processing and stable FM signal transmission. Digital filtering, stereo encoding, pilot tone generation, and FM modulation are processed digitally for improved broadcast audio quality.
User-Friendly Control
The transmitter features an intuitive front-panel control knob that allows users to easily adjust frequency, audio volume, and RF power output directly from the display interface. You can easily control them by simply rotating the knob left or right. The adjustable frequency range is 87.5 MHz to 108 MHz, while the volume level can also be easily adjusted from 0–14.
How to Install a 50W FM Transmitter?
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Install the FM Antenna
Set the broadcast antenna in an open and elevated position, preferably around 20–30 meters high for better coverage.
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Connect the RF Cable
Use a high-quality 50Ω coaxial cable to connect the antenna to the FM transmitter securely.
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Connect the Audio Source
Connect your mixer, microphone, computer, or audio player to the transmitter audio input interface.
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Set the FM Frequency
Choose an unused FM frequency between 87.5 MHz and 108 MHz to avoid local signal interference.
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Power On and Test
Turn on the transmitter and verify the broadcast signal, audio quality, and SWR status for safe operation.
Video Guide
50W FM Transmitter Installation Demo
Recorded in our factory, this video shows the real setup and testing process of our FM transmitters and broadcasting systems.
Related FM Transmitter Broadcast Equipments
Apart from that, we also provide STL, audio processor, mixing console, studio microphones, table microphone stands, monitor speakers, and other related broadcasting equipments
Mixing Console
Our mixing console allows precise control over different audio channels, making it easy to manage and balance multiple sound sources.
Audio Processor
Our audio processor can enhance your audio quality and is built for long-lasting durability.
Monitor Speaker
Monitor speakers allow you to hear your audio exactly as it is for precise monitoring and adjustment.
Studio MIC
The studio microphone can capture clear, detailed sound, ensuring your voice is natural, clean, and professional for broadcasting.
Table Microphone Stands
Our table microphone stands offer 360° rotation, they are very stable and convenient for your broadcasting.
Closed Listening Headphones
Our closed-back headphones provide clear, isolated sound with minimal leakage, ideal for accurate monitoring during broadcasting.
Key Features of the 50W FM Transmitter
Every Risheng 50W FM transmitter is engineered for professional broadcast reliability -- from community stations to commercial radio.
High RF Stability
Phase-locked loop (PLL) frequency synthesis ensures rock-solid carrier frequency accuracy of ±0.5 ppm. No frequency drift under temperature variation or load changes -- critical for licensed broadcast operations.
Low Harmonic Emissions
Multi-stage LC low-pass filter network suppresses harmonic and spurious emissions to <−60 dBc, well below FCC Part 73 and ITU-R SM.329 requirements. Ensures interference-free coexistence with other broadcast services.
24/7 Continuous Operation
Industrial-grade components rated for continuous duty cycle operation. Thermal management system with smart fan control and over-temperature protection at 60°C automatically reduces power before any damage occurs -- keeping you on-air around the clock.
Who Uses a 50W FM Transmitter?
The 50W output power is the sweet spot for medium-range community broadcasting -- powerful enough for a city district, compact enough for indoor rack installation.
Church & Religious Broadcasting
Broadcast sermons and worship music to your congregation and surrounding community. Perfect for drive-in church services.
School & Campus Radio
Run a student radio station covering your campus and surrounding neighborhood. Ideal for journalism programs and campus announcements.
Drive-In Theater
Transmit audio directly to car radios at your drive-in cinema or drive-in event. Clean, interference-free audio for every vehicle in your lot.
Community Radio Station
Launch a licensed community FM station serving a town or district. The 50W power level meets LPFM licensing requirements in many countries.
Farm & Rural Broadcasting
Cover a large agricultural estate or rural township with news, weather, and entertainment. No internet infrastructure required.
Hotel & Resort In-House Radio
Broadcast your own music and information channel across your resort property. Guests tune in on bedside radios or poolside speakers.
Outdoor Events & Festivals
Provide FM audio for outdoor concerts, sporting events, and festivals. Attendees receive crystal-clear audio on personal FM receivers.
Factory & Warehouse PA
Replace wired PA systems with FM broadcast for large factory floors, warehouses, or industrial complexes. Workers use personal radios.
Compare FM Transmitter Power Levels
Not sure which power level fits your project? Compare these transmitters to find the perfect match for your coverage needs.
Ideal for: Campus radio, church, small community
Ideal for: Community radio, school, LPFM station
Ideal for: Regional community radio, church network
Ideal for: Local commercial radio, town-wide broadcast
50W FM Transmitter FAQ
Request a Quote or Ask a Question
Tell us about your broadcast project. Our team will recommend the right transmitter and provide a competitive factory-direct quote within 24 hours.
"As the source manufacturer, we can offer you the best price with the best quality. Single unit orders are welcome -- no minimum order quantity required."