3KW FM Broadcasting Transmitter
Reliable solid-state transmitter, designed for large-scale FM radio broadcasting with coverage up to 70 km.
Technical Specifications
Everything you need to know about the RS-3000 Series transmitter -- performance, specifications, our company, and certifications.
Performance & Technology
FM Compact Transmitters RS-3000 Series is a range of modular broadcast FM transmitters designed to operate in the whole 87.5–108 MHz frequency range for FM radio broadcasting, with power range 3000, 3500, 4000, 5000W and 6000W. Superior audio quality and sound purity — High Power 5kW FM Transmitter Broadcast Equipment.
- Very high efficiency — more than 75% for a complete 3 kW amplifier
- Latest LDMOS technology for power modules, ultra-high RF efficiency (>80% typ.), software optimized for each power level
- Lowest weight and dimensions in the industry — lower heating, lower space occupied, lower maintenance needed
- Longer component lifespan, reduced electricity and cooling costs, fewer fans required
Key Features
- Analog and digital (AES/EBU) audio signal input directly
- 5-inch color LCD with touch panel displays all parameters in real-time
- Intelligent protection: over PF, over SWR, over temperature, voltage, current
- Real hot-plug structure — modules can be repaired without stopping the transmitter
- RS232/RS485 and TCP/IP communication interface ready for remote control
Protection System
Over/Under Voltage DC & AC, RF and power supply over-temperature, RF coaxial output open or short circuit protection. Capable of long working time on short/open loads at all phase angles without damage. Integrated AC mains filtering and lightning protection, with delayed re-energizing after mains power blackout to prevent damage from voltage peaks.
Everything You Need to Go On Air
The transmitter alone isn't enough. A functioning FM broadcast station requires three core components working together. We supply all of them -- properly matched and tested as a system.
Signal Chain Overview
3KW FM Transmitter
The heart of your broadcast system. Converts audio to a high-power FM signal ready for transmission. Includes all audio inputs, control interfaces, and protection systems.
- Solid-state LDMOS amplifiers
- Built-in DSP stereo processor
- Remote monitoring via Ethernet
FM Broadcast Antenna
Radiates your signal in all directions with maximum efficiency. Antenna gain and height directly determine your coverage radius -- the right antenna can double your effective range.
- FM Dipole Antenna
- Matched to 3KW power rating
- Stainless steel construction
Low-Loss Coaxial Cable
Carries the RF signal from transmitter to antenna with minimal power loss. For 3KW systems, we recommend 1-5/8" low-loss coaxial cable to preserve your full output power.
- 1/2”, 1-5/8" or 7/8" options
- Pre-terminated connectors
- Custom lengths available
Need a Complete Broadcast Station?
We offer complete 3KW FM broadcast station packages --Apart from that, we also provide STL, audio processor, mixing console, studio microphones, table microphone stands, monitor speakers, and other related broadcasting equipments. All equipment is carefully selected, pre-matched, and tested to work together as a complete broadcast solution. Contact us for a custom quote based on your site requirements.
Get a Complete Station QuoteBuilt to Stay On-Air
Every Risheng transmitter ships with hardware-level protection systems and remote management capabilities -- engineered for stations where going off-air is not an option.
VSWR Protection
Built-in VSWR circuitry detects antenna impedance mismatches in milliseconds. Whether caused by a connector failure, lightning strike on the feedline, or a damaged antenna element, reflected power triggers an automatic hardware fold-back -- protecting PA transistors before damage occurs.
Over-Temperature Protection
When internal temperature reaches 60°C, a hardware thermal circuit automatically reduces output power or initiates a controlled shutdown -- protecting final-stage transistors. The fault is logged in the fault register and pushed as an alert via remote monitoring. The transmitter resumes normal operation automatically once temperature drops to a safe threshold.
Remote Telemetry
Monitor your transmitter in real time via built-in Ethernet interface. Read forward power, reflected power, VSWR ratio, PA module temperatures, supply voltages, and fault codes -- without being on-site. Optional RS-232/RS-485 and SNMP integration available on select models for third-party NMS compatibility.
Hot-Swappable Modules
On the 3KW FM transmitter, each PA module is hot-swappable. Remove and replace a failed module while the transmitter stays on-air -- remaining modules continue broadcasting at reduced combined power. No shutdown, no broadcast interruption. Replacement modules ship from our factory within 48 hours under warranty.
Low Reflected Power Redundancy
In the multi-module combiner architecture, each PA module monitors its own reflected power independently. If one module detects excessive reflected power, it isolates itself from the combiner output without taking down the entire transmitter. Combined with VSWR fold-back, this provides two independent layers of protection for both your antenna system and on-air continuity.
Remote Control
Adjust power level, change frequency, mute/unmute output, and reset faults remotely via web interface or SNMP -- no site visit required. For stations operating unmanned transmitter sites, this eliminates the need for physical presence during routine adjustments or fault recovery. Full control from anywhere in the world.
Two Independent Protection Layers
VSWR fold-back and low reflected power module isolation work simultaneously and independently. Even if one protection mechanism is engaged, the other remains fully active -- your PA transistors and your broadcast are protected by design, not by luck.
What You Can Monitor Remotely
- Forward power output (real-time)
- Reflected power & VSWR ratio
- PA module temperatures per module
- Supply voltages & current draw
- Active fault codes & fault history log
What You Can Control Remotely
- Output power level adjustment (10%-100%)
- Frequency change within 87.5-108 MHz
- Mute / unmute RF output
- Fault reset after review
- Individual module enable / disable (5U series)
Why Buy Direct from the Manufacturer?
Source factory pricing, no middlemen, full engineering support
5-Year Warranty
The longest warranty in the industry. We stand behind every unit we ship.
Factory Pricing
No distributor markup. You're buying directly from the production facility in China.
Free Shipping
Free delivery to most countries. Your transmitter arrives ready to install.
WhatsApp Support
Direct line to our engineers. We create a dedicated support group for every installation.
Who Actually Needs a 3KW FM Transmitter?
3KW sits in a sweet spot -- powerful enough for serious regional reach, yet manageable in terms of infrastructure and operating cost. Here's who we typically work with.
Licensed Commercial Radio Stations
Regional FM stations covering a city and its outskirts are the most common 3KW customer. If you hold an FM broadcasting license and need to serve a population center of 500,000+ people, 3KW is typically the minimum recommended power.
Large Religious Broadcasting Networks
Churches and religious organizations in the Philippines, Nigeria, Ghana, and across sub-Saharan Africa often operate their own FM stations to reach congregations across entire provinces. A 3KW transmitter lets a single broadcast point serve communities across a wide geographic area.
Government & Public Broadcasters
Municipal governments, state-run broadcasters, and emergency alert networks in developing markets frequently deploy 3KW transmitters as their primary or backup broadcast infrastructure. Reliability and long warranty coverage are critical for these operators.
University & Campus Radio Stations
Larger universities with regional outreach programs need more than a low-power campus transmitter. A 3KW system allows an educational broadcaster to serve the surrounding city and establish a genuine community presence beyond the campus boundary.
Broadcast Equipment Dealers & Integrators
We supply directly to broadcast system integrators and resellers across Africa, Southeast Asia, and Latin America. If you're building out a station for a client, we can provide complete technical documentation, white-label support, and competitive wholesale pricing.
Rural Development & Agricultural Networks
In regions where internet penetration is low, FM radio remains the most effective mass communication tool. Agricultural extension programs, rural health campaigns, and community development organizations use 3KW transmitters to reach dispersed rural populations across large areas.