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7500B-B True Diversity Dual-Receiver Wireless Microphone System

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7500B-B True Diversity Dual-Receiver Wireless Microphone System

7500B-B SYSTEM SPECIFICATIONS cont'd

Emission/Modulation: Direct FM, crystal controlled, 15-kHz deviation, 60F3.

Harmonic Distortion: 0.5% maximum, below transmitter limiting; 0.25% typical at 1 kHz.

Operating Temperature: -20°C to +50°C (-4°F to + 122°F).

FCC Data: Approved under Parts 15, 74, and 90, as applicable.

Standard Accessories: Operation Manual, Rackmount ears, Screwdriver, Fuse, Battery, Hex Wrench

SPECIFICATIONS OF DIVERSITY RECEIVER UNIT

Receiver Type: Single-frequency, singleconversion, superheterodyne FM.

Image Rejection: 80 dB, typical.

Intermediate Frequency: 10.7 MHz.

Sensitivity: 1.6 µV for 50 dB S/N (processed), 20 kHz bandwidth.

Ultimate Quieting: 105 dB (20 kHz flat); 108 dB (A-weighted).

Squelch Quieting: Greater than 105 dB. (referenced to 15 kHz deviation).

Audio Output:
Line Level: + 12 to -18 dBm (at full deviation), + 16 dBm minimum at clipping.

Mic Level: -18 to -46 dBm at full deviation (-30 to -60 dBm with normal headroom).

IF Selectivity: 200 kHz, 9 poles, monolithic ceramic and LC filters.

RF Selectivity: Approximately 5 MHz, 4-pole LC filter.

Local Oscillator: Bipolar transistor, thirdovertone crystal controlled, low=side injection.

Audio Processor: 2:1 logarithmic expander.

Adjustments/Controls: Power switch, mic/line switch, output level adjust control.

Indicators: Audio-level bargraph, diversity A/B LED's,
RF signal detect A/B LEDs, power ON/OFF LED.

Power: 115 or 235 Vac (internal switch selectable) 50/60 Hz, 10 Watts.

Dimensions: (excluding rack-mount ears) Height: 1.75 inches. (4.45 cm)
Width: 16.9 inches. (42.9 cm)
Depth: 9.0 inches. (23 cm)

Weight: 6 lbs., 10 oz (3 kg). SPECIFICATIONS OF BODYPACK TRANSMITTER

Power Output: 50 mW nominal.

Frequency Stability: ±0.005%.

Spurious Output: -45 dB minimum, -55 dB typical.

Controls: Power on/off, audio on/off, mic-level adjust, battery overload/low indicator.

Audio Adjustment Range: 30 dB.

Battery life: 8-10 hours with one 9-V alkaline battery.

Antenna: Attached external limp wire

Dimensions: (excluding belt clip) Height: 1.0 inches (2.54 cm) Width: 2.5 inches (6.35 cm) Depth: 4 inches (10.16 cm)

Weight: 5.5 oz (159.7 g), with battery.

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