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The U1 body-pack is a compact transmitter that offers all the benefits of Shure handheld transmitters. The U1 functions with the full range of Shure lavalier, headworn, and instrument microphones, as well as guitar cables.

Features:

• Supports the full range of Shure lavalier, headworn and instrument mics as well as guitar/bass cables
• U1 comes with a standard 4 pin mini connector
• U1L comes with a LEMO connector
• Easy-to-read, programmable, multi-function LCD to set and view: Group and channel, Five-segment battery fuel gauge, Frequency lock, power lock, and on/off status
• 1/4 wave whip antenna
• Power on/off LED
• 3 position attenuator switch for adjusting input level
• Adjustable Audio gain control
• Combined power on/off and mute switch
• Power and frequency lock
• Durable all metal housing
• 12-hour battery life
• Two AA Batteries

Specifications:

• 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
• 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
• Operating Temperature Range: ?20? to 50? C (?4? to 122? F); NOTE: Battery characteristics may limit this range
• Overall Dimensions: U1: 98.4 mm L x 64.7 mm W x 24.6 mm D (3-7/8 x 2-1/2 x 31/32 in.)
• Net Weight: U1: 175.2 g (6.1 oz.) without battery