The Shure UHF premier series

 Ultra-reliable series of radio transmitters / recievers, long battery life and easily arrayable using the antenna distribution system. Available with SM58 heads.

RF Carrier Frequency Range

554–862 MHz, depending on region

Working Range

U1: 152.4 m (500 ft.) minimum, under typical conditions; 487.6 m (1600 ft.) line of sight

NOTE: Actual working range depends on RF signal absorption, reflection and interference

Audio Frequency Response

50–15,000 Hz, +2 dB.

NOTE: Overall system frequency response depends on the microphone element

Gain Adjustment Range

U1: 0 to 40 dB

U2: 0 to 26 dB

Modulation

+10kHz to +100kHz deviation, depending on region; compressor-expander system with pre- and de-emphasis

RF Power Output

U1, U2: 10 mW maximum

Dynamic Range

>102 dB or >110dB, depending on region; A-weighted

Image Rejection

90 dB typical

RF Sensitivity

Spurious Rejection

75 dB typical

Ultimate Quieting (ref. 45 kHz deviation)

>100 dB, A-weighted

Audio Polarity

Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 with respect to pin 3 of low impedance output and the tip of the high impedance 1/4-inch output

System Distortion (ref. +45 kHz deviation, 1 kHz modulation)

0.3% Total Harmonic Distortion typical

Power Requirements

U1, U2: 1.5V AA alkaline battery; Nicad optional

U4: 90 to 230 Vac, 50/60 Hz

Power Consumption

U4S: 9.6 W min., 13.2 W max.

U4D: 12 W min.,16 W max.

Battery Life (Typical)

U1, U2: 12 hours