1–7
Getting Acquainted
1.3 Transmitter/Exciter Specifications
Frequency Range87.9 MHz–108 MHz (76 MHz–90 MHz
optionally available)
RF Power Output (VSWR 1.5:1 or better)
FM303 - 30 watts, adjustable
FM10010 - 100 watts, adjustable
FM25020 - 250 watts, adjustable
RF Output Impedance 50 Ω
Frequency Stability Meets FCC specifications from
0-50
degrees C
Audio Input Impedance 50 kΩ 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 15 kHz)
Exciter only Less than 0.3% (50 Hz–15 kHz)
Stereo Separation
Complete transmitter Better than –40 dB (50 Hz–15 kHz)
Exciter only Better than –40 dB (50 Hz–15 kHz)
Crosstalk Main into sub, better than –40 dB
Sub into main, better than –40 dB
Stereo Pilot 19 kHz ±2 Hz, 9% modulation
To Next Page
Loading...
