More than just an FM exciter or amplifier, a Crown integrated FM transmitter system combines built-in audio processing and stereo generation in one rugged, compact unit. Each model provides excellent signal quality, ease of use, and economical long-term reliability with a variety of features including: quick set-up; built-in digital metering and diagnostics; 87-108 MHz user-selectable frequency range; 100/120 VAC, 220/240 VAC or DC operation. Reliable operation is a major design criterion. With Teflon circuit boards and copper heat spreaders in the RF chain, the unit functions with less heat and improved life span. A unique Automatic Level Compensation (ALC) circuit protects the unit from voltage, temperature and VSWR variations. If operating parameters move outside the safe operating range, the ALC automatically reduces output power to safe limits until normal conditions are restored. All Crown units feature a 5-year warranty.
To see the owners manual for the Crown FM 30, click on this
.87 to 108MHz (Japanese frequency available 74-90MHz as an option) Front panel agile3 to 30 watts with front panel adjustment50 Ohms unbalanced1.7:1 Maximum with automatic foldback at higher VSWRBetter than +/- 1KHz over operating temperature rangeDirect Frequency Modulation of CarrierLED Indicators with Peak indicatorsBetter than 60 dB (70 to 80 dB typical)Better than 50 dB referenced to 100% modulation @ 100 Hz, no de-emphasis.Better than 50 dB with 100% modulation @ 100 Hz, no de-emphasis (typical >60dB)Better than –65 dB (75 dB typical)+/- 120 KHz, better than –35 dB; +/- 240 KHz better than –45 dB0 to 50 degrees C0 to 80% @ 20 degrees C (non-condensing)10,000 ft (3,000 m)100 to 120 or 220 to 240 volts AC +/- 10%, 50 to 60 HzGreater than 97% (lagging)36 to 48 VDC (48V required for full output)100VAMeets FCC requirementsStandard type N, 50 Ohm5.25 x 16.5 x 17.5 inches (13.4 x 41.9 x 44.5 cm) exclusive of rack mounts but inclusive of connectors25 pounds (11.3 Kg) shipping weight = 33 Pounds (14.9 Kg)13.8 Vp-p for +/-75KHz deviation< 0.05% from 50Hz to 15 Hz (0.03 typical)33.8 Vp-p for +/-75KHz deviation+/-0.3 dB from 40Hz to 100KHz50 Kohms bridging, balanced3.8 Vp-p for +/-75KHz deviationConforms to 75uS pre-emphasis curve for +/- 0.25 dB from 50Hz to 15KHzSelectable 50, 75 uS or flat50 Kohms bridging, balanced-10 dBm to +10 dBm selectable for 75KHz deviation @400Hz+/- 0.3 dB from 50Hz to 10KHz, +/- 1.0dB from 10Hz to 15KHZ0.4% or less @ 15KHz (0.2 typical)Better than 40 dB from 50Hz to 15KHzMain to sub and sub to main, -40 dB or better from 50 Hz to 15 KHz>60dB+/-.5 Hz @ 9% modulation*Please consult a broadcast engineer to determine if this unit is right for your application and you are meeting all of the appropriate legal requirements. You can review the FCC regulations on LPFM and unlicensed usage below.
