Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
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1.3 Transmitter/Exciter Specifications<br />
Frequency Range<br />
RF <strong>Power</strong> Output<br />
FM30<br />
FM100<br />
FM250<br />
RF Output Impedance<br />
Frequency Stability<br />
Audio Input Impedance<br />
Audio Input Level<br />
Pre-emphasis<br />
Audio Response<br />
Complete transmitter<br />
87.9 MHz–108 MHz (76 MHz–90 MHz<br />
optionally available)<br />
(VSWR 1.5:1 or better)<br />
3 - 30 watts, adjustable<br />
10 - 100 watts, adjustable<br />
20 - 250 watts, adjustable<br />
50 Ω<br />
Meets FCC specifications from<br />
0-50 degrees C<br />
50 kΩ bridging, balanced, or 600 Ω<br />
Selectable for –10 dBm to +10 dBm for<br />
75 kHz deviation at 400 Hz<br />
Selectable for 25, 50, or 75 µsec; or<br />
Flat<br />
Conforms to 75 µsec pre-emphasis<br />
curve as follows<br />
±0.30 dB (50 Hz–10 kHz)<br />
±1.0 dB (10 kHz–15 kHz)<br />
Exciter only<br />
±0.25 dB (50 Hz–15 kHz)<br />
Distortion (THD + Noise)<br />
Complete transmitter<br />
Exciter only<br />
Less than 0.7% (at 15 kHz)<br />
Less than 0.3% (50 Hz–15 kHz)<br />
Stereo Separation<br />
Complete transmitter<br />
Exciter only<br />
Crosstalk<br />
Better than –40 dB (50 Hz–15 kHz)<br />
Better than –40 dB (50 Hz–15 kHz)<br />
Main into sub, better than –40 dB<br />
Sub into main, better than –40 dB<br />
Stereo Pilot<br />
19 kHz ±2 Hz, 9% modulation<br />
Getting Acquainted<br />
1–7
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