Working on 50W FM Transmitter Stereo Broadcast

Working on 50W FM Transmitter Stereo Broadcast series is a profesional FM stereo/Mono broadcasting transmitter. The advanced digital technologies,Digital Signal Processor(DSP), are used in the transmitters to get little size , high performance and high reliability. They are widely used for professional radio stations to transmit high quality FM radio programs. 

More than that, the RS-CM1500W FM transmitter is now gradually showing its high-quality characteristics to the world, especially in the radio station equipment market.


50W FM Transmitter Stereo Broadcast


50W FM radio transmitter is highly reliable, lighter in weight and easier to operate than previous version of transmitter. This transmitter adopts a simple-style design concept. It integrates the 50W Fm Stereo Transmitter exciter, power amplifier, output filter and switching power supply in a 1U high 19-inch standard case, reducing the connecting cables between the components.


• User-friendly digital LCD panel, using one rotary knob to control.

• The integrated LCD screen displays all the parametric including: transmitter frequency, stereo and mono, volume, amplifier tube temperature, audio signal UV meter, forward power, reflected power, modulation mode, pre-emphasis etc,.

• 1U 19-inch thickened all-aluminium case, strong and excellent heat dissipation.

• Precise PLL frequency generation system, to ensure that the frequency not drift away for more than10 years, with built-in high-quality stereo encoder.

• Outstanding power AGC balance control system, adjustable power output from 0 to 50 watts, and automatic gain power control to maintain output power within set range without drifting.

• Signal input supports XLR and RCA audio inputs, and also SCA and RDS signals using the BNC connector AUX.

• The RF amplifier uses LDMOS transistors to withstand even severe load mismatch exceeding the 65: 1 VSWR at a 5dB compression point.

FM broadcast radio station


· Hearing similar to CD

· All-digital technologies DSP+DDS

· Built-in audio signal limiter

· Analog and Digital (AES/EBU) audio signal input directly.

· AGC circuit can keep the Output Power stability.

· Big LCD display all the parameters in real time.

· Communication Interface by RS232 for remote

· Five kinds of protections for the security

· Compact structure

Equipments included


1. Frequency Range 87.5MHz~108 MHz
2. Frequency Setting step 10KHz
3. Carrier Frequency precision ±200Hz
4. Residual Wave Radiation ≥65dBc
5. Audio Input Impedance 600Ω,Balance
6. Separation 60dB Pilot Signal Modulation
7. Audio Input Level ±10dBm,step 0.01dB
8. S/N ≥75dB(30H~15kHz,100%)
9. Audio Harmonic Distortion <0.05%
10. Audio response ±0.05dB(30Hz~15KHz)
11. Output Load Impedance 50Ω
12. Output Power 50W
13. Pre-emphasis 0μS,50μS,75μS
14. Deviation ±75kHz
15. Pilot Frequency 19 kHz±1Hz
16. Sub-carrier Suppression ≥65dB
17.RF Output Connector 7/16'(female)or7/8'Flange
18.Size 460mm*480mm*88mm
19.Weight 7KG
20.Pilot Signal Modulation 8%~10%



50w 350w 4




1). Community Radio stations
2). LPFM radio stations
3). City radio stations
4). Christian Church radio stations

Warranty: 6 years for all transmitters in our factory.


1) OVERHEAT PROTECTION: The transmitter will switch to auto-protection with alarm message and a beep sound once the working temperature gets higher than normal range.

2) OVER SWR PROTECTION: SWR is the indication of antenna system connection with transmitter. Once the connection is bad and causing a high SWR Value, the transmitter will switch to automatic protection mode by showing alarm message on the screen with a beeping sound meanwhile.

3) FAN ERROR ALARM When the fan stops running, the alarm message will be displayed on the screen.

4) ADJUSTABLE POWER OUTPUT The RF out of this 50W Fm Transmitter is continuously adjustable from 0-50 watt at the stepping of 0.1watt, which means you can tune it to 1w, 1.1w, 1.2w...50w, with just one transmitter you’ll get multiple modes of outputs and easy to tune as per your needs

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