Crown Broadcast FM30R 30W LPFM Translator w/ Built-In Receiver

Product Description

Crown transmitters are known worldwide for their integration, ease-of-use, and reliability. The FM30 series is the lowest-power member of Crown's family of LPFM stereo broadcast transmitters. The FM30R is a 30-watt low-power FM translator with a built-in receiver.

The integration is most apparent in the standard transmitter configuration which incorporates audio processing, stereo generation, and RF amplification without compromised signal quality. A single Crown transmitter can replace several pieces of equipment in a traditional system.

Ease-of-use is apparent in the user-friendly front panel interface and in the installation procedure. Simply select your operating frequency (using 5 external switches), add an audio source, attach an antenna, and connect AC or DC power and you're ready to broadcast. Of course, the FM series of transmitters also feature more sophisticated inputs and monitoring connections if needed.

Reliability is a Crown tradition. The first Crown transmitters were designed for rigors of worldwide and potentially portable use. The modular design, quality components, engineering approach, and high production standards ensure stable performance.

Remote control and metering of the transmitter are made possible through a built-in I/O port. For more direct monitoring, the front panel includes a digital multimeter display and status indicators. Automatic control circuitry provides protection for high VSWR as well as high current, voltage, and temperature conditions.

Features

• Frequency agile from front panel
• SWR metering from remote control
• Ability to control output power from remote control
• 3-year warranty
• 24-hour service support
• Meets or exceeds all FCC requirements

Specifications

• Frequency Range 87 to 108MHz (Japanese frequency available 74-90MHz as an option) Front panel agile
• RF Power 3 to 30 watts with front panel adjustment
• RF Output Impedance 50 Ohms unbalanced
• VSWR 1.7:1 Maximum with automatic foldback at higher VSWR
• Frequency Stability Better than +/- 1KHz over operating temperature range
• Modulation Type Direct Frequency Modulation of Carrier
• Modulation Indication LED Indicators with Peak indicators
• FM S/N Ratio (FM noise) Better than 60 dB (70 to 80 dB typical)
• Asynchronous AM S/N Ratio Better than 50 dB referenced to 100% modulation @ 100 Hz, no de-emphasis.
• Synchronous AM S/N Ratio Better than 50 dB with 100% modulation @ 100 Hz, no de-emphasis (typical >60dB)
• RF Harmonics/Spurious Products Better than -65 dB (75 dB typical)
• RF Bandwidth +/- 120 KHz, better than -35 dB; +/- 240 KHz better than -45 dB
• Temperature 0 to 50 degrees C
• Humidity 0 to 80% @ 20 degrees C (non-condensing)
• Maximum Altitude 10,000 ft (3,000 m)
• AC power 100 to 120 or 220 to 240 volts AC +/- 10%, 50 to 60 Hz
• Power factor Greater than 97% (lagging)
• DC Power 36 to 48 VDC (48V required for full output)
• Power Consumption 100VA
• Regulatory Notification for FCC part 73 and 74 Meets FCC requirements
• RF Output connector Standard type N, 50 Ohm
• Chassis dimensions 5.25 x 16.5 x 17.5 inches (13.4 x 41.9 x 44.5 cm) exclusive of rack mounts but inclusive of connectors
• Weight 25 pounds (11.3 Kg) shipping weight = 33 Pounds (14.9 Kg)

Wide Band composite operation

• Composite Inputs 1
• Composite Input level 3.8 Vp-p for +/-75KHz deviation
• Composite total harmonic distortion + noise < 0.05% from 50Hz to 15 Hz (0.03 typical)
• Sub-carrier inputs 3
• Sub-carrier input level 3.8 Vp-p for +/-75KHz deviation
• Sub-carrier amplitude response +/-0.3 dB from 40Hz to 100KHz

Monaural operation w/ built in Audio Processor

• Audio Input impedance 50 Kohms bridging, balanced
• Audio Input level 3.8 Vp-p for +/-75KHz deviation
• Audio Frequency response Conforms to 75uS pre-emphasis curve for +/- 0.25 dB from 50Hz to 15KHz
• Pre-emphasis Selectable 50, 75 uS or flat

Stereo Operation w/ built in Audio Processor and Stereo Generator

• Audio Input impedance 50 Kohms bridging, balanced
• Audio Input level -10 dBm to +10 dBm selectable for 75KHz deviation @400Hz
• Frequency response +/- 0.3 dB from 50Hz to 10KHz, +/- 1.0dB from 10Hz to 15KHZ
• Total Harmonic distortion + Noise 0.4% or less @ 15KHz (0.2 typical)
• Stereo Separation Better than 40 dB from 50Hz to 15KHz
• Linear Cross Talk Main to sub and sub to main, -40 dB or better from 50 Hz to 15 KHz
• 38 KHz Sub-carrier suppression >60dB
• Pilot Stability +/-.5 Hz @ 9% modulation

For more information on this product, please visit the Crown Broadcast website.

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