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25kW EIRP Complete FM Broadcasting Package



25000W EIRP 19 inch professional equipment rack with FM transmitter and RF amplifier - Stock Code: 25000w8a40
25000W EIRP antenna system, operation and installation guide

How Far Will 25kW Reach?

On open rural land with good antenna height you can expect 25kW EIRP to reach 170km, maybe a little more. In a dense city like New York with tall buildings made of steel and concrete, this would cause great attenuation to the signal and reduce the coverage area by 10 times, you could expect only a few miles. So, the transmission distance really depends on many factors. If you send us the GPS coordinates of your antenna site and the antenna height, we can make a plot of you using satellite elevation data of where the signal can be received. We have a great example of this HERE

2kW FM Transmitter Power

To achieve 25kW EIRP only 2kW of transmitter power is needed if the correct antenna is installed with high grade coaxial cable. The 2kW of transmitter power comes from 2 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 2 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, 2 or more if possible, 1kW amplifiers are perfect.

12dBi Antenna Gain

In these systems the antenna is everything, you must treat the antenna like your best friend, even a brother (sister too! for the pc sensitive). The antenna just looks like lumps and rods of aluminum screwed together, and it is! but it is much more, the antennas length, shape, installation and height dictate if you signal is going to do tens of miles or less than one mile. The antenna is more important than the transmitter and amplifiers. This antenna system uses eight folded dipoles optimally spaced to produce 12dBi of gain. Cut short, this multiplies the signal pointing to the horizon by 12.5 times resulting in 2000W EIRP transmission signal.

RDS Option

If you want to see your station name and more scrolling across the car radio display add the RDS Option, 'Add To Cart' rds-upgrade in the price panel.

This RDS Option is not just ordinary RDS, it is fully programmable dynamic RDS. This means the transmitter can be connected to a PC by a USB cable. The transmitters RDS circuit will pick the Artist and Song name from any folder on the PC disk drive. This folder is easy to set up in the DJ playout software, like Zara Studio etc. Detailed information HERE.

2kW Professional FM Radio Transmitter Stereo Audio and Processing

Inc. Delivery to UNITED STATES

25kW EIRP 40M OF CABLE FM STEREO WITH AUDIO PROCESSING (25000w8a40)
US$ 10564

FULLY PROGRAMMABLE REAL TIME DYNAMIC AND STATIC RDS (rds-upgrade)
US$ 99.30

Do You Have A Question?

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Package Contents

QtyDescriptionItem
1FM Stereo Driver with Audio Processing
1Distribution Splitter Amplifier
21000W FM Power Amplifier
2LMR600 40m /131ft Cables
1All Other Connecting Cables
8Broadband High Power Folded Dipole Antenna with Tower Mounting Clamps

5 Years! Warranty
5 YEARS
LIMITED WARRANTY
MORE INFORMATION

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.


Maximum FM Transmitter Range For 25000W EIRP Based On Customer Reports From Around The World

25kW 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

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






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