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The RDU4100 has design enhancements that make it 30% louder than previous Motorola XTN and Ax models, ensuring clearer audio even in noisy environments.
These frequencies provide extra-secure and exceptionally clear signals, making communication more reliable and efficient in a business setting.
The RDU4100 meets military specifications for resistance against dust, wind, shock, and vibration, making it a rugged choice for challenging environments.
The lithium-ion battery offers enhanced performance, lasting longer than typical batteries and experiencing no memory 'over-charge' side effects.
Compatibility with duplex repeaters allows the RDU4100 to significantly extend your radio coverage area, optimizing communications by automatically switching between repeater and talkaround modes.
Review Summary
Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.
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UHF (438 - 470MHz)
2000mW
10 Channels
12.5kHz
With Standard 1100 mAH Li-Ion Battery: Up to 8.5 hours
With High Capacity 2400 mAH Li-Ion Battery: Up to 18.5 hours (with Battery Save On)
7.2 Volts DC (Li-Ion Battery Pack or Alkaline)
High: 4W
Low: 2W
< 2 ppm
< -50 dBc
40 dB at 12.5kHz / -45 dB at 25.0kHz
+-2.5kHz at 12.5 kHz / +-5.0 kHz at 25.0kHz
60dBc
< -20dBm at 12.5kHz / < -13dBm at 25kHz
+1 to -3 dB (0.3 - 3.0 kHz)
< 2%
-122 dBm (0.18 MuV)
60dB at 12.5kHz / 65dB at 25.0kHz
60dB
80 dB (blocking 1Mhz)
< 5%
-50dB
-50dB
-45dB
< -54dBm (< 1GHz)
< -52 dBm (> 1GHz)
1.5W at 8Ohms (At <5% Distortion)
-30 to 60 deg. C / -22 to 140 deg. F(Radio)
IP55
Polycarbonate Housing passes EIA 603
Satisfied EIA 603
MIL-STD-810-C, MIL-STD-810-D, MIL-STD-810-E, MIL-STD-810-F
With Standard Li-Ion Battery: 4.5 x 2.2 x 1.6" / 114.30 x 55.88 x 40.64mm
with High Capacity Li-Ion Battery: 4.5 x 2.2 x 1.8" / 114.30 x 55.88 x 45.72mm
With Standard Li-Ion Battery: 8.5oz / 240.97g
with High Capacity Li-Ion Battery: 10.3oz / 292.00g
723755540293
The RDX series brings workplace noise to its knees by helping to ensure exceptional audio quality in the loudest environments. Designed for noisy areas, their radios are 30% louder than previous Motorola XTN and Ax models as a result of new design enhancements. This business-essential radio provides the perfect partnership of excellent audio and exceptional durability. The RDU4100 4 watt two-way radio operates on an innovative 89 business-exclusive UHF frequencies and is 2013 FCC Narrowband ready. The default factory programming on this RDX radio is set to operate in 12.5kHz mode. Enhanced audio quality, a rugged design and versatile customer programming software, make this radio an exceptional choice for all of your on-site business needs.
Business-exclusive frequencies
89 UHF frequencies make signals extra-secure and exceptionally clear. 219 codes, including customized PL and DPL codes to help ensure a clear signal.
Exceptional voice quality
Delivers increased clarity through wind-noise reduction.
Rugged and water-resistant
Meets military specifications for sealing against dust, wind, shock, vibration and other adverse conditions.
Customer programming software
Allows users to perform programming functions and access new features.
Bright sensors
Tricolor LED indicator shows feedback of calling or monitoring features.
Enhanced battery performance
Lithium-ion battery lasts longer, with no memory "over-charge" side effects.
Simplified cloning
Quickly copies settings from radio to radio when used with accessory.
Voice activation
Enables hands-free operation when used with accessory.
Disable Channel
Allows users to disable and skip undesirable channels via the customer programming software (CPS).
Channel Annunciation
Voice support for channel announcement.
Repeater Capability
Compatible with duplex repeaters so you can significantly extend your radio coverage area.
Dynamic Talkaround Scan
Allows the radio to automatically switch between repeater and talkaround modes in order to optimize communications.