250W EIRP FM Broadcast Transmitter System



250W EIRP 19 inch professional equipment rack with FM transmitter and RF amplifier

How Far Will 250W Reach?

Reports vary on 250W EIRP range, some customers claim up to 35km, others 20km. It's largely dependent on if the two way stacked antenna is 1. on a pole on the top of a building roof or 2. more professionally installed on the side of a large tower. More on FM Transmission Range

250W EIRP antenna system, operation and installation guide

100W FM Stereo Transmitter

This bold looking 2U 19 inch unit is made to last. Constructed from steel and power coated in black, it's here to stay. The internal boards and modules are no exception. Driven by the world renowned Veronica® PLL board to give super low noise and RF stable performance. The limiter and stereo coder can be completely disabled if you want to use an external processor such as Orban, Inovonics or PC generated MPX/RDS. More info on the 100W Transmitter

2 Way Stacked Dipole +4.8dBi

The 2 way stacked dipole will provide nearly double the radiated power over a single dipole without any increase in transmitter power. This antenna also covers 88 to 108 MHz without a retune. The 100W transmitter combined with this antenna and 20m of cable produces a radiated output of around 250W EIRP. More info on the 2 Way Stacked Dipole

20 Metre (66 Feet) Antenna Cable

This package uses 66ft / 20mt of LMR400 antenna cable. The loss on this cable and plus the antenna gain actually results in an EIRP of about 250 watts..

5 Years! Warranty
5 YEARS LIMITED WARRANTY
more information

Do You Have A Question?

Package Contents

QtyDescriptionItem
1100W FM Stereo Transmitter with Audio Processing
1LMR400 20m / 66ft Cable
2Standard FM VHF Dipole
1RF Splitter Boxes
2Mounting Clamps

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

250W Typical 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 250W EIRP Based On Customer Reports From Around The World
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