BE FM 1C, 1 KW, Solid State FM Transmitter

Power Output: 1000 watts to 250 watts capability. RF Output Load Impedance: 50 ohms.

Output Connector: "N" type.

Load VSWR: 1.2:1 without output matching. Open and short circuit protected.

Harmonic and Spurious Suppression: Meets or exceeds FCC, DOC and CCIR requirements.

Frequency Range: 87.5 MHz to 108 MHz, tuned to specific operating frequency. Exciter programmable in 10 kHz steps.

Frequency Stability: +300 Hz, 0 to 50° C.

Type of Modulation: Direct frequency modulation of carrier frequency.

Modulation Capability: Greater than ±350 kHz.

Pre-emphasis: FCC 75 uS, CCIR 50 uS (where specified), 25 uS (Dolby) or flat response, selectable.

Asynchronous AM Signal to Noise Ratio: 55 dB

below reference carrier with 100% AM modulation at 400 Hz, 75 uS de-emphasis (no FM modulation present).

Synchronous AM Signal to Noise Ratio: 50 dB

below 1 kW reference carrier at 100% AM modulation at 400 Hz, 75 uS de-emphasis (with FM modulation ±75 kHz @ 400 Hz).

MONAURAL OPERATION

Audio Input Impedance: 600 ohm balanced, resistive, adaptable to other impedances, 60 dB common mode suppression.

Audio Input Level: +10 dBm nominal for ±75 kHz deviation at 400 Hz.

Audio Frequency Response: ±0.5 dB, 30 Hz to 15 kHz, selectable flat; 25, 50, 75 uS pre-emphasis.

Total Harmonic Distortion + Noise: 0.02% or less at 400 Hz.

SMPTE Intermodulation Distortion: 0.02% or less, 60 Hz/7 kHz, 4:1 ratio.

CCIF Intermodulation Distortion: 0.02% or less, 15kHz/14kHz, 1:1 ratio.

Transient Intermodulation Distortion: 0.02% or less, sine wave/square wave.

FM S/N Ratio: 85 dB below ±75 kHz deviation at 400 Hz, measured in a 20 Hz to 30 kHz bandwidth with 75 uS de-emphasis.

WIDEBAND COMPOSITE OPERATION

Composite Inputs: 3 total, (1) unbalanced and (1) balanced plus front panel test; all connectors BNC.

Balanced Composite Input Impedance: 10K or

50 ohm, nominal, resistive, selectable.

Unbalanced Composite Input Impedance: 10K

ohm, nominal, resistive.

Composite Input Level: 3.5 V p-p nominal, for ±75 kHZ deviation.

FM S/N Ratio: 85 dB below ±75 kHz deviation at 400 Hz, measured in a 20 Hz to 30 kHz bandwidth with 75 uS de-emphasis.

Composite Total Harmonic Distortion + Noise:

0.02% or less at 400 Hz.

Composite SMPTE Intermodulation Distortion:

.05% or less, 60Hz/7MHz, 1:1 ratio
Composite CCIF Intermodulation Distortion:

0.02% or less, 15 kHz/14 kHz, 1:1 ratio.

Composite Transient Intermodulation Distortion:

0.02% or less, sine wave/square wave.

Composite Amplitude Response: ±0,05 db, 30 Hz to 53 kHz.

Composite Phase Response: ±0.25 degrees from linear phase, 30 Hz to 53 kHz.

Composite Group Delay Variance: ±10

nanoseconds, 30 Hz to 100 kHz.

Composite Slew Rate: 9 V/microsecond (symmetrical).

Subcarrier Inputs: (3) total, unbalanced, BNC connectors.

Subcarrier Input Impedance: 100K ohm, nominal, resistive.

Subcarrier Input Level: 3.5 V p-p, nominal, for ±7.5 kHz deviation.

Subcarrier Amplitude Response: ±0.2 db, 40 to 100 kHz.

STEREO OPERATION

Modulation Type: Digitally synthesized stereo, digitally synthesized pilot; no pilot phase adjustment required.

Audio Input Impedance: 600 ohm balanced, resistive, floating (adaptable to other impedances).

Audio Input Level: +10 dBm, ±1 db, for 100% modulation at 400 Hz (adaptable to other input levels).

Audio Input Filters: 15 kHz LPF with delay equalization for minimum overshoot.

Frequency Response: ±0.5 dB, 30 to 15,000 Hz, 75 uS pre-emphasis (flat, 25 or 50 uS Pre-emphasis selectable).

Total Harmonic Distortion + Noise: 0.05% or less at 400 Hz.

SMPTE Intermodulation Distortion: FM1C, 0.08% or less, 60 Hz/7 kHz, 4:1 ratio.

CCIF Intermodulation Distortion: 0.05% or less, 10 kHz/14 kHz, 1:1 ratio.

Transient Intermodulation Distortion: 0.05% or less, sine wave/square wave.

FM S/N Ratio: 82 dB below ±75 kHz deviation at 400 Hz, measured in a 20 Hz to 30 kHz bandwidth with 75 uS de-emphasis.

Stereo Separation: 50 dB or better; 30 to 15,000 Hz (sine wave).

Dynamic Stereo Separation: 50 dB or better; 30 to 15,000 Hz (normal program content).

Linear Crosstalk: Main to Sub/Sub to Main due to amplitude and phase matching of left and right channels, 30 to 15,000 Hz, 45 dB minimum below 100% modulation.

Non-Linear Crosstalk: Main to Sub/Sub to Main due to distortion products. 70 dB minimum below 100% modulation.

38 kHz Subcarrier Suppression: 80 dB, minimum, below 100% modulation.

Pilot Stability: ±0.5 Hz, 0° to 50° C.

Modes: Stereo, Mono L+R, Mono (L) and Mono (R) remote controlled (see FS 30 data sheet for full details).

SCA OPERATION

Subcarrier Inputs: (3) total, unbalanced, BNC connectors.

Subcarrier Input Impendence: 100K ohm, nominal, resistance.

Subcarrier Input Level: 3.5V p-p, nominal, for ±7.5 kHz deviation.

Subcarrier Amplitude Response: ±0.2 dB, 40 to 100 kHz.

Subcarrier Frequency: 67 kHz (39 to 95 kHz to order).

Crosstalk, SCA to Stereo: -60 dB or better below 100% modulation of left or right, 75 uS de-emphasis.

Crosstalk, Stereo to SCA: -50 dB or better below ±6 kHz deviation of SCA using 150 uS de-emphasis and FS30 stereo generator.

Cross talk, SCA to SCA: -50 dB or better below ±6 kHz deviation of either SCA using 150 uS de-emphasis.

AC Input Voltage: 196 to 252 VAC, 50/60 Hz, single phase.

Overall Efficiency: 45% or better.

Operating Temperature: +32 to +122° F (0 to +50° C).

Operating Altitude (AMSL): 10,000 feet (3048 meters), 60 Hz; 7,500 feet (2286 meters), 50 Hz.

Size: 19 in (48.3 cm) wide x 22 in (55.9 cm) deep x21 in (53.3 cm) high.

Weight: 103 Ib (45 kg); 170 Ib (77 kg) packed.

System performance is specified using model FX50 FM Exciter, FS30 Stereo Generator, and FC30 SCA Generator where applicable, measured at rated transmitter power of 1 kW.

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