

5000W EIRP is an ideal power level for broadcasting to a large city, it can also typically reach up to 70 miles with excellent quality radios. With typical quality radios about half this range would be normal, say 35 miles. We can give more accurate predictions on range using satellite elevation data like this example on our Facebook page here
The crisp clear FM signal starts in this unit which provides 1000W super clean output in stereo with audio processing and limiting. For a small, but with a need to be quite powerful radio service, a big town for example, this transmitter is just the ticket with everything required included. More info on the 1000W Transmitter
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 four folded dipoles optimally spaced to produce 9dBi of gain. Cut short, this multiplies the signal pointing to the horizon by 6.25 times resulting in 5kW EIRP transmission signal.
RDS is now included on all stereo transmitters with audio processing. RDS shows your station name and more scrolling across the car radio display.
This RDS 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 can be programmed to 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.
| Qty | Description | Item |
| 1 | FM Stereo Driver with Audio Processing | ![]() |
| 1 | 1000W FM Power Amplifier | ![]() |
| 1 | LMR400/600 40m /131ft Cables | ![]() |
| 1 | All Other Connecting Cables | ![]() |
| 4 | Broadband High Power Folded Dipole Antenna with Tower Mounting Clamps and RF Splitters | ![]() |
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LIMITED WARRANTY |
This package uses 130ft / 40mt of LMR400 antenna cable. The loss on this cable and plus the antenna gain actually results in an EIRP of over 5kW.
The following range chart is derived from real-world customer reporting, providing a reliable baseline for expected broadcast coverage. This data reflects the typical ranges really ever recorded by stations utilizing this 100kW EIRP system.
• Data Source: Based on average customer reports in some directions.
• Verification: Reports are primarily compiled from direct listener communication (phone, text, WhatsApp, etc.) to radio station programs operated by our customers.
It is important to understand that FM transmission range is very difficult to predict precisely due to numerous influencing variables (e.g., terrain, antenna height, atmospheric conditions, local noise floor). For a detailed breakdown of the factors affecting signal propagation, refer to our dedicated page FM Transmission Range
The high-quality FM signal begins with the internal Veronica PLL (Phase-Locked Loop) driver, which serves as the 1W Exciter.
• Function: Produces a super low noise and highly stable FM signal.
• Trustworthiness: Using a trusted PLL driver is fundamental to preventing drift and ensuring carrier integrity, a hallmark of professional-grade equipment.
• Resource: More information on this core component can be found in our 1W Exciter (PLL driver)
After the PLL generates the stable carrier, the internal processing boards take over to shape the audio for the best listener experience:
1. Internal Stereo Coder: Generates the FM stereo signal.
2. Internal Audio Processor: Applies dynamic processing (like limiting and compression) to ensure a loud and crisp audio signal on the listener's radio.
For expert broadcasters who utilize specialized external equipment, our system offers complete bypass capabilities.
• Integration: If you are an audio professional preferring an external processor (such as Orban, Inovonics, or PC-generated MPX/RDS signals), the system is fully flexible.
• Bypass Capability: The internal limiter, stereo coder, and audio processor boards can be completely disabled.
• Benefit: This flexibility ensures that the signal chain meets the exact, precise specifications and processing signature required by the station's chief engineer.
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