Belar FMRR-4 Frequency Agile FM Rebroadcast Receiver



The Belar FMRR-4 Frequency Agile FM Rebroadcast Receiver is a microprocessor controlled, tunable receiver designed for rebroadcasting and other applications that require accurate FM reception and composite output.


The FMRR-4 features 10 memory locations for one-button access to 10 stations with call letters. Direct dial of any standard FM frequency is also possible, and UP/DOWN buttons are included. The station’s call letters can be programmed into the display with the frequency for quick and easy reference. A sophisticated, multistage filter ensures the highest possible performance.

The precision demodulator features two buffered 75 ohm composite (BNC) outputs and a 600 ohm, balanced (XLR) output suitable for rebroadcast of mono, stereo, and SCA signals.

Technical Specification

Technical Specification

RF Input Sensitivity
100 uv

Signal-to-Noise Ratio:
100 uV input 75 dB
500 uv input 85 dB

RF Input Impedance
75 ohms, BNC Connector

Input Attenuator
0, 6, 12, 18 dB

RF Frequency Range
87.75 – 107.95 MHz in 50 kHz increments

two 75 ohm buffered composite (BNC)

600 ohm, balanced (XLR)

Capture Ratio
1.5 dB

Alternate Channel
27 dB

3rd Adjacent Channel
46 dB

Harmonic Distortion
less than 0.03% @ 1 kHz, 75 kHz deviation

1 kHz 60 dB, 15 kHz 50 dB

1 EIA Rack Unit 1.75″H x 14.5″D x 19″W

Power Requirements
110/220 VAC, 50/60 Hz

Power Consumption
20 VA

optional power supplies available

Shipping Weight
11 lbs

© Copyright 2000 Belar Electronics Laboratory, Inc. All rights reserved.

New in 2015 – 3 Year Factory Warranty to all Belar Products.

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