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50kW EIRP Complete FM Broadcasting Package

50000W EIRP 19 inch professional equipment rack with FM transmitter and RF amplifier
50000W EIRP antenna system, operation and installation guide

How Far Will 50kW Reach?

On open rural land with good antenna height you can expect 50kW EIRP to reach 185km and maybe a little more. 50kW EIRP is a formidable power and is suitable for regional broadcasting as opposed to local broadcasting. This power level is also useful in densely urbanised cities where there are tall buildings, a lot of steel and concrete. In extreme cases in some directions we have had customers report signals up to 240km with this power level. Transmission distance is always the most difficult question we have to answer. For more accurate predictions we can make plots based on GPS coordinates, antenna height and radiated power like these HERE

4kW FM Transmitter Power

To achieve 50kW EIRP only 4kW of transmitter power is needed if the correct antenna is installed with high grade coaxial cable. The 4kW of transmitter power comes from 4 separate 1kW amplifiers that are driven by a distribution amplifier and Veronica® 1W PLL driver. All our big systems above 10kW EIRP are configured this way using more than just a single 1kW amplifier. Due to this a complete shutdown or signal failure can only occur if the 4 amplifiers (1kW each) go down at exactly the same time, this is nearly impossible with super high odds. So if you need system reliability and a station on air, always, with no breakdowns, 4 or more if possible, 1kW amplifiers are perfect.

+12dBi Gain, Eight Antennas

This is where the magic happens, this huge eight way antenna transforms the transmitter power by 10 times to 4000W and this is even after taking the cable losses into account. This transformed signal is effective radiation, what it means is that if you stand at the horizon many miles away, the signal voltage with this eight way antenna will be exactly the same and indistinguishable from the signal voltage of a 4000W transmitter using just one dipole antenna. The power is effectively identical, hence the name Effective Isotropic Radiated Power (EIRP).

Inc. Delivery to UNITED STATES

US$ 15243

US$ 184.10

RDS Option

As an optional extra this transmitter is available with dynamic and programable RDS fitted. If you want RDS option please (rds-upgrade) ADD TO CART

Do You Have A Question?

Package Contents

1FM Stereo Driver with Audio Processing
1Distribution Splitter Amplifier
41000W FM Power Amplifier
4LMR600 40m /131ft Cables
1All Other Connecting Cables
8Broadband High Power Folded Dipole Antenna with Tower Mounting Clamps

5 Years! Warranty

40 Metre (130 Feet) Antenna Cable

The 40mt of LMR600 cable supplied with this system is robust yet flexible making installation much easier. If you prefer the more rigid type, that's okay, just let us know and we will change the system to that. LMR600 has a very high specification with just over a fraction of 1dB loss for 40mt at 100MHz. In addition, if 40mt is not sufficient in length, just let us know and for a small additional cost we will quote for the extra length.

FM Stereo Audio and Processing

The FM signal starts in the internal Veronica PLL which produces the super low noise and highly stable FM signal. You can find more info on this at in our 1W Exciter (PLL driver). Then the internal stereo coder and audio processor boards provide a loud and crisp audio signal on the listeners radio. If your more of an expert, you can if you want use an external processor such as Orban, Inovonics or PC generated MPX/RDS, the limiter and stereo coder we supply can be completely disabled.

Declaration of Conformity

European Union

We hereby declare that this equipment complies with;
• ETS 300384 European Telecommunications Harmonised Standard when used with an audio compressor limiter supplied and tested by Aareff
• EN 301489-11 V1.3.1 (2006-05) EMC Electromagnetic Compatibility when used with 1 meter AC mains cord supplied. If the installation engineer needs to extend this cord, this and the audio input cable should be no more than 3 meters in length to remain in compliance with EMC directive.
• 2006/95/EC Directive (2006-12) LVD Low Voltage Directive.

Equipment compliance is possible using equipment from and in conjunction from other manufacturers, but since this is beyond the control of Aareff Systems, Aareff Systems cannot or be expected to guarantee compliance in this situation.

United States

The following list are the FCC technical requirements for FM broadcasting. We confirm and verify that this transmitter complies with the technical requirements.

47 CFR Chapter I Federal Communications Commission sections:
• 73.1560, 2.1046 RF Power
• 73.1545, 2.1055 Frequency Stability
• 73.317, 2.1049 (e)(3) Emission Limitation, Emission Mask
• 73.317, 2.1057, 2.1051 Emission Limits, Spurious Emissions at Antenna Terminal
• 73.317, 2.1057, 2.1053 Emission Limits, Field Strength of Spurious Emissions

50kW Maximum Range Chart

This graph is based on average customer reports in some directions. Basically this shows the typical ranges really ever recorded. Most of the reports were radio station listeners that phoned, texted, WhatsApp etc. into the radio station programs operated by our customers. Range is very difficult to predict as there are many factors that effect it. More info on FM Transmission Range

Maximum FM Transmitter Range For 50000W EIRP Based On Customer Reports From Around The World


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