Crown Broadcast FM2000A 2kW Broadband FM Amplifier Package

Product Description

The FM2000A is a highly efficient amplifier package designed to set a new standard in FM transmitter design offering modularity, ease of use, and long-term reliability. The FM2000A package includes a PA2000 amplifier, PS2000 power supply, and an FM2K accessory pack.

The PA2000 broadband amplifier requires no tuning and typically provides 80% RF efficiency across the band. The PS2000 power supply is power factor corrected and 90% efficient. Modern MOSFET technology ensures high AC to RF efficiency (better than 70% overall) and long-term reliability. The unmatched efficiency of this power amplifier significantly improves your bottom line by providing cooler operation and lower power costs.

These modular units are uniquely designed to be lightweight and compact for convenient shipping, and require only seven RU spaces for installation. Installation is made simple with just three interconnections between the amplifier and power supply. In addition, built-in digital metering and status indicator capabilities enable intuitive operation to further augment the user-friendly design.

Economic long-term reliability is ensured through Crown's carefully engineered solid-state design. The PA2000 features four field-replaceable 500–watt power modules.

This power amplifier delivers 500 to over 2000 watts of RF power output. Use your existing exciter or purchase the FM2000T which includes Crown's award-winning FM150 exciter for an unbeatable 2 kW transmitter package.

Please specify 7/8" EIA output or DIN connector when ordering.

Specifications

• Frequency Range 87 to 108MHz Front panel agile
• RF Power 200 to 2000 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 -70 dB (-80dB 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 240 volts AC -15%/+10%, 50 to 60 Hz
• Power factor Greater than 97% (lagging)
• Power Consumption 2.8kW @ 2,000 watts output
• Regulatory Notification for FCC part 73 and 74 Meets FCC requirements
• RF Output connector 7/8th EIA Flanged (7-16 DIN optional)
• Total dimensions
  • Amp-7 x 17.25 x 23" (17.7 x 43.8 x 58.4cm) weight-66lbs (29.9kG) shipping wt 71 lbs
  • PS-5.25 x 17.25 x 23" (13.3 x 43.8 x 58.4) weight-46lbs (29.9kG) shipping wt 53 lbs

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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