1000 Watt Professional FM Broadcast Transmitter

1000W FM Stereo Broadcasting Transmitter with Audio Processing Front Panel


1000 watts is high power and with the right antenna, for example an 8 way stacked dipole, and high ground it could propagate a signal up to 100km. Our 10kW EIRP system is a fine example of this. If you need big distance or just sheer brute power to penetrate concrete and steel in a large city, this is the one. As ever, we have tried to make installation and power up as easy as possible. For the Stereo with Audio Processing and RDS version all you need is a quality mixer (and great radio presenters). Just connect the output of the mixer directly the gold plated RCA inputs on the back panel of the driver. Connect the transmitter 1000W output to a suitable 50 ohm antenna that can handle 1000W. That's it!! switch on, if you don't see any reflected power on the front panel, you are broadcasting serious power and serious distance.

Temperature Protection

The power output of this transmitter is 1000W continuous day and night non stop 24/7. It has reflected power protection and it has over temperature protection. In the event of any of these protections being activated, the power will reduce to a safe level to prevent any damage. When the fault that triggered the protections clears, the power restores automatically back to full.

VSWR Protection

The final output section of this transmitter uses a BLF188XR, they say the XR means 'eXtremely Rugged' This LDMOS RF power transistor is designed for the toughest engineering environments and is capable of withstanding a severe load mismatch with VSWR greater than 65:1 at 5 dB of compression. The BLF188XR is actually capable of providing an outstanding 1600 W of peak output power and still pass extreme ruggedness testing. For ultra reliability we just run it at 1000W maximum. It can be set at lower power levels, right down to 10W if required.

Configuring Power, Dev. and Freq.

The frequency, power level and deviation is easy to set using the integral frequency counter and controls on the underside panel. More information on this in the user manuals shown in the link below.

Rear Panel of 1000W FM Stereo Broadcasting Transmitter with Audio Processing

Five Years! Warranty
more Information

Which Version Do You Need?

The stereo version with audio processing and limiting is available or the straight raw composite MPX version. If you're not sure which version you need, then it's a high probability that need the stereo version with audio processing and limiting. In any case the stereo version has the option of MPX input, it can be used for both. If you wish to connect the unit to external processing such as Optimod, Inovonics, Breakaway, StereoTool etc you should use the MPX version More Information HERE.

User Manual

User Manual

1000W FM MPX Broadcasting Transmitter Front Panel


The transmitter will work with any 50 ohm antenna rated at 1000W or higher. Suitable antennas that we sell for this unit are:

Vertical 5/8 Wave
4 Way Stacked Dipole
8 Way Stacked Dipole

Our 10KW EIRP and 5KW EIRP include this transmitter packaged in with coaxial cable and a suitable antennas. These full systems are engineered to comply with the EU standards and regulations for licensed broadcasting and most other countries regulations in the world.

Do You Have A Question?


The stereo version with audio processing and limiting meets all the regulatory standards required out of the box and pre configured. In fact if you send us a copy of your permit and it's conditions, we will set it up exactly to the specification. This equipment complies with EU/CE harmonised standards and FCC technical requirements for FM broadcasting. More information HERE

All stated measurements were made at 220VAC at 27 Degrees Celsius ambient temperature unless stated.

RF Specification

Power Output Adj. 1-1000 Watts into 50 ohms
Spurious Emissions Less than -75 dB ref to carrier
Harmonic Emissions Less than -70 dB ref to carrier
Freq Stability +/- 1 KHz max. typ. +/-300 Hz
Deviation Sensitivity Stability +/-2 % max
Freq Fine Adj > +/- 1000 Hz
Freq Range 87.5 to 108 MHz in 100 KHz steps
Out of Lock RF Muting Less than -70 dB ref to carrier
Residual AM Less than 0.5 %
Synchronous AM Less than 0.5 %
RF Ruggedness Any VSWR phase or length of time
Output Connector
Operating Temp -20 to +40 Deg C

AF Specification

Pre-emphasis (50 uS/ 75 uS/ None) Selectable
Audio Input Connector Phono/ RCA type unbalanced sockets
Audio Input Sensitivity +4 dBu for +/- 75 KHz dev.

Version MPX Stereo and Audio Processor
Signal To Noise Ratio80dB 65dB
Frequency Response 30Hz-76KHz 30Hz-15KHz
Audio Distortion 0.2% THD Max0.2% THD Max (at MPX section)

AC Specification

Input Voltage 90-264 V AC 135-370 V DC 47-63 Hz
Input Power 1500W for 1000W RF OUT with RF SWR less than 1.5
Working Humidity 20-90% RH non-condensing
Safety Standards UL60950-1 TUV EN60950-1 BSMI CNS14336 CCC GB4943 J60950-1 approved
EMC Emission Compliance to EN55022 class B EN61000-3-2 3 FCC PART 15 / CISPR22 class B CNS13438 class B GB17625.1
EMC Immunity Compliance to EN61000-4-2 3 4 5 6 8 11 light industry level criteria A