1.3 Transmitter/Exciter Specifications
Frequency Range 87.9 MHz–107.9 MHz (76 MHz–90 MHz
optionally available)
RF Power Output (VSWR 1.7:1 or better)
FM600 Up to 660 watts output
RF Output Impedance 50 Ohms
Frequency Stability Meets FCC specifications from 0-50
degrees C
Audio Input Impedance 50k Ω bridging, balanced, or 600 Ω
Audio Input Level Selectable for –10 dBm to +10 dBm for
75 kHz deviation at 400 Hz
Pre-emphasis Selectable for 25, 50, or 75 µsec; or flat
Audio Response Conforms to 75 µsec pre-emphasis
curve as follows:
Complete Transmitter ±0.30 dB (50 Hz–10 kHz)
±1.0 dB (10 kHz–15 kHz)
Exciter only ±0.25 dB (50 Hz–15 kHz)
Distortion (THD + Noise)
Complete Transmitter Less than 0.7% (at 15kHz)
Exciter only Less than 0.3% (50Hz-15kHz)
Stereo Separation
Complete Transmitter Better than –40dB (50Hz-15kHz)
Exciter only Better than –40dB (50Hz-15kHz)
Crosstalk Main into Sub, better than –40dB
Sub into Main, better than –40dB
Stereo Pilot 19 kHz ±2 Hz, 9% modulation
1-7 Getting Acquainted
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