Decade FM-850 FM Transmitter – Professional FM Broadcast Transmitter
The Decade FM-850 is a high-performance professional FM transmitter designed for reliable broadcasting across the commercial FM radio band (87.9–107.9 MHz). Built for crystal-clear audio transmission and dependable long-term operation, the FM-850 is an ideal solution for community radio stations, campus radio, church and religious broadcasting, drive-in events, sports venues, tourism attractions, live events, and low-power FM applications.
Featuring selectable stereo or mono broadcasting, programmable RF power output up to 1.8 watts, and exceptional audio quality, the FM-850 delivers professional-grade FM broadcasting performance in a compact 1U rackmount design. It can also be used as an FM exciter with an external RF amplifier for extended broadcast coverage and higher transmission power.
Trusted by broadcasters, audio professionals, and sound contractors, the FM-850 combines easy operation, rugged construction, and certified compliance with FCC Part 73 and Industry Canada standards.
Professional FM Transmitter Features
- Professional FM stereo/mono transmitter
- Operates on the commercial FM broadcast band (87.9–107.9 MHz)
- User-programmable frequency and RF power settings
- RF output adjustable from 0 to 1.8 watts in 0.05W increments
- High-fidelity FM audio transmission
- LED display for frequency and power monitoring
- Automatic tuning with tuning lock indicator
- No manual tuning required
- Compatible with standard FM radios and car receivers
- Broadcast coverage up to 0.5 miles with portable FM radios and 1.5 miles or more with vehicle receivers
- Adjustable audio input level with modulation indicators
- Selectable bass boost and mono/stereo operation
- Balanced XLR and unbalanced 1/4" audio inputs
- SO-239 RF output connector
- Heavy-duty all-steel rackmount enclosure
- FCC Part 73 and Industry Canada BETS-6 / RSS-123 certified
Ideal Applications
The FM-850 professional FM broadcast transmitter is perfect for:
- Community FM radio stations
- Campus and college radio broadcasting
- Church and religious radio stations
- Drive-in theater audio transmission
- Stadium and arena audio broadcasting
- Tour guide and tourism audio systems
- Event broadcasting and temporary FM stations
- Emergency information broadcasting
- Low-power FM (LPFM) applications
- Audio distribution systems
Technical Specifications
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Frequency Range: 87.9 – 107.9 MHz
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Modulation: FM, 75 kHz deviation
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RF Output Power: 0 – 1.8W programmable
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Frequency Response:
- FM-800: 20 Hz – 20 kHz
- FM-850: 20 Hz – 15 kHz
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Signal-to-Noise Ratio: 70 dB minimum
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Stereo Separation: 40 dB minimum
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Harmonic Distortion: 0.3% maximum
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Load Impedance: 50 Ω
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Power Supply: 120 VAC standard (optional 240 VAC)
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Rackmount Size: 1U (19" W × 11" D × 1.75" H)
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Weight: 19 lbs
The Decade FM-850 delivers professional FM broadcasting performance, reliable RF transmission, and superior audio quality for broadcasters who demand dependable operation and flexible installation options.
