Motorola RDU4160D Six Pack of 4 Watt 16 Channel UHF Radios

This is a six-pack of Motorola RDU4160d radios, the largest model in the RDx range.

Key specifications

• Color: Black.
• Use: Multi-department communication for large or obstructed on-site business operations.
• Frequency: UHF 438–470 MHz.
• Channel capacity: 16 channels using 89 business frequencies.
• Power: Up to 4 watts.
• Maximum published coverage: Up to 350,000 square feet or 30 floors. Actual coverage depends on terrain and site conditions.
• Package: Six radios.

Motorola's own model table makes the gap clear. The RDV2080d and RDU2080d transmit 2 watts across 8 channels on a non-removable antenna. The RDU4160d transmits 4 watts across 16 channels and its antenna is REMOVABLE. Double the power, double the channels, and the one radio in the family whose antenna can be changed or replaced rather than written off with the radio.

Four watts is the specification that decides a large or obstructed site. Sixteen channels is what a multi-department operation needs before it starts running separate fleets.

Motorola supplies each RDx radio with an antenna, a spring action belt clip, a Lithium-Ion battery and a power supply, and the antenna is specifically noted for the RDU4160d because it is the model that has one to fit. Settings copy across the fleet from one configured radio through the RLN6309 multi-unit charger or the RLN6303 radio-to-radio cloning cable, which is worth knowing before programming six radios one at a time.

Who it is for

Six RDU4160d radios is a fleet for a warehouse, a large store, a school or a multi-building site that needs 4 watts to reach across structure and 16 channels to keep departments apart. Motorola's user guide lists the RDU4160d as the UHF, 4 watt, 16-channel model with a removable antenna, against the 2 watt, 8-channel RDU2080d and RDV2080d whose antennas are fixed; the 4 watt models can also be programmed with custom frequencies within 438 to 470 MHz and to work with repeaters. UHF suits buildings and built-up sites; read UHF vs VHF two-way radios if the band choice is still open.

Battery and charging

• Battery life: Motorola estimates 8.5 hours on the standard Li-Ion battery, 17 hours on the high-capacity battery and 18.5 hours on the ultra-high-capacity battery at 4 W with battery save on, on a 5 percent transmit, 5 percent receive, 90 percent standby duty cycle. With the alkaline battery frame the radio runs at 2 W by default for an estimated 26 hours.
• Charging: the standard charger takes about 7, 12 or 13 hours for the standard, high and ultra-high-capacity batteries; the rapid charger about 1.5, 3 or 3.5 hours.
• Antenna: removable; Motorola lists the RAN4031 UHF whip for 438 to 470 MHz and the RAN4033 UHF stubby for 450 to 470 MHz.

Licence

This radio operates on licensed business frequencies. An FCC business radio licence (Part 90) is required to transmit; CMI can point you at the process when you order.

Accessories that fit

CMI connector code: MA. Motorola's RDX user guide names the RLN6351 standard 1100 mAh battery, the RLN6308 ultra-high-capacity 2400 mAh battery, the RLN6306 alkaline battery frame, the RLN6307 spring-action belt clips, the RLN6302 leather carry case, the RLN6303 radio-to-radio cloning cable, the RLN6175 standard drop-in charger, the RLN6304 rapid drop-in charger kit, the RLN6309 six-unit multi-unit charger and the RAN4033 stubby antenna. Ask CMI for an earpiece or speaker microphone for this radio by connector code.

Part number

CMI part number: CMI-RDU4160D-6PK, six radios. For the current RM series equivalents see the Motorola RMU2080 and RMU2080d; see CMI's RDX series collection, Motorola collection and business radio collection.