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Shure Incorporated
21/24
Battery Life
up to 14
hours
(alkaline)
BLX4R
BLX4R
Output Impedance
XLR connector
200
Ω
6.35 mm (1/4") connector
50
Ω
Audio Output Level
Ref. ±33 kHz deviation with 1 kHz tone
XLR connector
–20.5 dBV
(
into 100 kΩ load
)
6.35 mm (1/4") connector
–13 dBV
(
into 100 kΩ load
)
RF Sensitivity
-105
dBm
for 12 dB SINAD, typical
Image Rejection
>50
dB
, typical
Dimensions
1.65 in. X 7.80 in.X 6.42 in. (42
mm
X 198
mm
X 163
mm
) H x W x D
Weight
without antennas
2.2
lbs
(998
g
)
Housing
Molded ABS, steel
Power Requirements
12
–
15
V DC
@ 260
mA
, supplied by external power supply (tip positive)