Shure WL83 Specifications download pdf (Page 13)

SPECIFICATIONS

SYSTEM

RF Carrier Frequency

150 to 216 MHz (15 frequencies between 167.875 and

213.8 MHz offered; others available)

Frequency Stability

0.005%, Crystal-Controlled

Ultimate Quieting

(ref. 12 kHz deviation)

>90 dB at 30m (100 ft); 60 dB, line-of-sight at 402m

(1/4 mi.)

Modulation

± 12 kHz deviation compressor-expander system with

pre- and de-emphasis

Distortion

(ref. 12 kHz deviation)

Less than 0.5% THD, 100 to 15,000 Hz; 0.3% at 1 kHz

typical

Dynamic Range

98 dB A-weighted

92 dB unweighted

Audio Frequency Response

50 to 15,000 Hz, ± 1 dB

Audio Polarity

Positive pressure on microphone diaphragm results

in positive voltage on pin 2 with respect to pin 3 of

OUTPUT connector, and positive voltage on tip of

AUX OUTPUT connector (&ohm and 10-kilohm posi-

tions) or negative voltage on tip (600-ohm position).

Negative voltage applied to tip of WA300 cable

results in same output polarities.

Temperature Range

Receiver

. . . . . . . . . . -18° to 54°C (0° to 130°F)

Transmitter (alkaline batt.) .

0° to 38°C (32° to 100

Transmitter (mercury batt.) .

4° to 54°C (40° to 130°F)

Transmitter (carbon-zinc) . . .

7° to 32°C (45° to 90

Certification

Type-accepted under FCC Parts 90 and 74

(FCC ID DD48NJW25DR)

RECEIVER

RF Sensitivity

Less than 0.5 µV for 12 dB SINAD

Image Rejection

At least 75 dB

Spurious Rejection

At least 80 dB

Squelch Quieting

125 dB

Squelch Threshold

Internally preset to 1.0 µV

Mic/Line Output

Line . . . . . . . . . . . .

600 ohms, + 13.5 dB maximum

Mic

. . . . . . . . . . . .

200 ohms, - 10 dB maximum (mic

level adjustable; -60 dB minimum)

Audio Output

8 ohms

. . . . . . . . . . . . . . . .

75 mW maximum

600 ohms

. . . . . . . . . . . 40 mW maximum

10 kilohms

. . . . . . . . . . . . . . .

0.2 mW maximum

Antenna Input Impedance

50 ohms nominal

Antenna

5/8 wavelength whip, UHF connector, length: 991 mm

(39 in.) (150 to 176 MHz); 762 mm (30 in.) (176 to 216

MHz)

Power

13.5 Vdc nominal (negative ground); 200 mA external

power converter supplied

Dimensions

88.9 mm (incl. feet) x 209 mm W x 211 mm D (3-1/2 in. x

8-1/4 in. x 8-5/16 in. ) (depth is 238 mm-9-3/8 in. in-

cluding front-panel controls and power connector

clip)

Weight

1.97 kilograms (4 lb 5-1/2 oz)

TRANSMITTER

RF Power Output

50 mW maximum; 30 mW typical

Modulation

54F3 ± 12 kHz deviation, 50 µsec pre-emphasis

Modulation Limiter

Internal compressor

Input Impedance

Actual:

16k (20k dc), pin 4 wired to pin 3 for WL83

microphone; 91k, pin 4 open for microphone or instru-

ment pickup

Gain Switch

High position

. . . . . . 0.0065 Vrms required for

100% modulation

Low position

. . . . . . . . .

0.065 Vrms required for

100% modulation

Gain Adjustment Range

Low Position . . . . . . . . . . . . . . . . . . . . . . . .

20 dB

High Position . . . . . . . . . . . . . . . . . . . . . . . .

30 dB

Antenna

Attached, 305 mm (12 in.), omnidirectional, flexible

wire

Power

Battery Type

. . . . . .

9-volt alkaline (NEDA

1604A); 8.4-volt nicad op-

tional

Battery Life

. . . . . . . . . .

6 to 8 hours typical

(alkaline); 1.5 to 2 hours

typical (8.4-volt nicad; per

charge)

Current Drain

. . . .

35 mA typical

Dimensions

102 mm H x 69.8 mm W x 25.4 mm D (4 in. x 2-3/4 in. x 1

in.) (not including antenna, controls and belt clip)

Weight

113 grams (4 oz); 170 grams (6 oz) with battery

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Shure WL83 Specifications Page 13

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