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 FM600 TECHNICAL SPECIFICATIONS
Frequency Range 87 to 108MHz (Japanese frequency available 74-90MHz as an option) Front panel agile
RF Power 60 to 600 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 –74 dB (80 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  (200 VAC or more required for full output power)
Power factor Greater than 97% (lagging)
Power Consumption 1.6KVA
Regulatory Notification for FCC part 73 and 74 Meets FCC requirements
RF Output connector Standard type N, 50 Ohm
Chassis dimensions 7 x 16.5 x 17.5 inches (17.8 x 41.9 x 44.5 cm) exclusive of rack mounts but inclusive of connectors
Weight 38 pounds (24 Kg) shipping weight = 45 Pounds (27.2 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

 

The FM600 is available in three configurations:  The FM600E is a basic exciter with composite input only.  The FM600T is a perfect choice for the lower power broadcaster, with its built in audio processor and stereo generator.  The FM600R is the translator option with built in receiver.

Crown Broadcast is a division of International Radio & Electronics Corporation located in Elkhart, Indiana.

© Copyright 2000 International Radio & Electronics Corporation.