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Power Supply
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Internal power supply
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Battery Status
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Yes
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RF Carrier Frequency Range
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470-865, 944-952 MHz depending on region
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Working Range
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UR1, UR2
150 m (500 ft.), under typical conditions
500 m (1600 ft) line-of-sight, outdoors for a single system.
NOTE: Actual working range depends on RF signal absorption, reflection
and interference.
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Audio Frequency Response
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40 – 18,000 Hz, (+1 dB, –3 dB).
NOTE: Overall system frequency response depends on the microphone element
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Gain Adjustment Range
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UR1: –20 to +35 dB
–10 dB recommended for guitar
UR2: –10 to +20 dB
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Modulation
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FM (45 kHz max. deviation), compander system with pre- and de-emphasis
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Dynamic Range
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>105 dB, A-weighted
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Image Rejection
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>110 dB typical
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RF Sensitivity
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UR4S+
–110 dBm Typical
12 dB SINAD
–105 dBm Typical
30 dB SINAD
UR4D+
–107 dBm Typical
12 dB SINAD
–102 dBm Typical
30 dB SINAD
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Spurious Rejection
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>90 dB typical
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Ultimate Quieting (ref. 45 kHz deviation)
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>100 dB, A-weighted
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Signal Polarity
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Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on XLR output pin 2 with respect to XLR pin 3 and on the tip of the 1/4-inch output jack.
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System Distortion (ref. ± 45 kHz deviation, 1 kHz modulation)
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<0.3% Total Harmonic Distortion typical
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Power Requirements
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UR1, UR2: Two 1.5V AA batteries
UR1M: Two 1.5V AAA batteries
UR4+:100 to 240 VAC, 50/60 Hz
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Current Drain
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UR1, UR2: 180 mA max. (normal RF power setting)
240 mA max. (high RF power setting)
UR4D+, UR4S+: 0.8 Amps max.
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Battery Life (Typical)
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UR1, UR2: 9.5 hours (normal RF power), 6 hours (high RF power)
UR1M: 5 hours (normal RF power), 3 hours (high RF)
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Operating Temperature Range
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–18° to +57° C (0° to +135°F)
NOTE: Battery characteristics may limit this range
NOTE: Electrical safety approval is based on a maximum ambient temperature of 35°C (95°F)
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Overall Dimensions
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UR1: 98 mm L x 60 mm W x 17 mm D (3.84 x 2.38 x 0.66 in.)
UR2/SM58: 261 mm L x 51 mm Dia. (10.27 x 2 in.)
UR2/SM86: 261 mm L x 51 mm Dia. (10.27 x 2 in.)
UR2/SM87A: 254 mm x 51 mm Dia. (10 x 2 in.)
UR2/KSM9/BK, UR2/KSM9/SL: 250 mm x 49 mm Dia. (9 7/8 x 1 15/16 in.)
UR2/BETA 58: 258 mm L x 51 mm Dia. (10.15 x 2 in.)
UR2/BETA 87A, UR2/BETA 87C: 254 mm x 51 mm Dia. (10 x 2 in.)
UR4S+/UR4D+: 44 mm H x 483 mm W x 366 mm D (1.72 x 19.00 x 14.39 in.)
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Net Weight
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UR1: 97 g (3.4 oz.) without batteries
UR2/SM58: 356 g (12.6 oz.) without batteries
UR2/BETA 58: 314 g (11.1oz.) without batteries
UR2/SM86: 317 g (11.2 oz.) without batteries
UR2/SM87A: 298 g (10.5 oz.) without batteries
UR2/KSM9/BK, UR2/KSM9/SL: 410 g (14.5 oz.) without batteries
UR2/BETA 87A, U2/BETA 87C: 325 g (11.5 oz) without batteries
UR4S+: 4.8 kg (10.6 lbs)
UR4D+: 5.0 kg (11.0 lbs)
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Housing
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UR1, UR1M: Cast magnesium
UR2: Aluminum die-cast handle and aluminum machined battery cup
UR4S+, UR4D+: Galvanized steel
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