UHF400R Heavy Duty DIN 5W UHF CB Radio | 12V/24V

📻 ORICOM UHF400R HEAVY DUTY DIN SIZE 5 WATT UHF CB RADIO – 12V / 24V

Heavy-Duty 5W UHF CB Radio Built for Australian Trucks, Transport, Commercial Vehicles & Machinery

📡 The Oricom UHF400R is a heavy-duty DIN-size 5 Watt UHF CB radio designed specifically for demanding Australian transport and commercial vehicle applications.

With automatic 12V / 24V power switching and a wide 10–30V DC operating range, the UHF400R can be installed directly into compatible 12V or 24V vehicles without requiring a separate voltage reducer simply to operate the radio.

A built-in dynamic front speaker, traditional rotary channel, squelch and volume controls, external heat-sink design and full 5 Watt RF output make it particularly well suited to trucks and machinery where simple operation, strong audio and dependable communications are priorities.

The UHF400R also provides 80 Australian UHF CB channels, up to 200 programmable receive-only channels, duplex repeater capability, Selcall, CTCSS/DCS signalling and multiple scan modes, giving professional operators a highly capable communications platform.

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⚡ KEY FEATURES

📻 Full 5 Watt UHF CB Output
Delivers up to 5 Watts RF transmission power for full-power Australian UHF CB communications.

🚛 Built for Australian Transport
Heavy-duty design makes the UHF400R particularly well suited to trucks, commercial fleets, agricultural machinery and other hard-working vehicles.

⚡ Automatic 12V / 24V Switching
Supports a wide 10–30V DC operating range, allowing installation into compatible nominal 12V and 24V vehicle electrical systems.

🔊 Built-In Dynamic Front Speaker
Front-facing audio output is particularly useful in truck dashboards and DIN-style installations where clear sound is essential.

🎛️ Rotary Channel, Squelch & Volume Controls
Traditional rotary controls provide fast, straightforward adjustment without navigating complicated menus.

🌡️ External Heat Sink
Designed to help manage operating temperature and maintain dependable full-power performance during demanding use.

🎙️ Automatic Level Control
ALC helps maintain consistent transmitted audio levels for clearer communication between different operators.

📡 80 Australian UHF CB Channels
Supports the standard 80-channel UHF CB system, including 75 voice channels.

📻 200 Programmable Receive-Only Channels
Provides additional receive-only channel capability for compatible frequencies within the unit's supported receiving range.

🔤 5-Digit Selcall ID with Alpha Display
Provides Selcall functionality with an alphanumeric display for compatible selective-calling applications.

🔐 38 CTCSS & 104 DCS Codes
Provides extensive signalling options for compatible group communications.

📶 Duplex Repeater Capability
Supports repeater operation using the standard +750kHz transmit offset to extend communications where a compatible repeater is available.

🔍 Open, Instant & Priority Scan
Multiple scanning options provide greater flexibility when monitoring UHF CB activity.

⭐ Priority Channel
Allows quick access and monitoring of a nominated priority channel.

🎙️ Rear Microphone Connection
Rear mic connection allows alternative microphone routing when used with the optional Oricom EXTC400 extension cable.

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🚛 PURPOSE-BUILT FOR TRUCKS & COMMERCIAL VEHICLES

The UHF400R is designed around the requirements of Australian transport operators rather than simply adapting a lightweight recreational radio.

Its combination of 12V / 24V compatibility, front-facing speaker, rotary controls and heavy-duty construction makes it particularly suitable for:

• 🚛 Prime movers and heavy trucks
• 🚚 Delivery and commercial vehicles
• 🚜 Agricultural machinery
• 🏗️ Earthmoving and plant equipment
• 🚙 4WDs and touring vehicles
• 🛻 Service and fleet vehicles
• 🏭 Industrial and site vehicles

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⚡ DIRECT 12V & 24V VEHICLE COMPATIBILITY

One of the biggest advantages of the UHF400R for truck installations is its broad 10–30V DC operating range.

This allows the radio to operate from compatible nominal:

• 🔋 12V vehicle systems
• 🔋 24V vehicle systems

The radio automatically accommodates the appropriate supply voltage within its specified operating range.

This can simplify installation in heavy vehicles where 24V electrical systems are common.

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📻 FULL 5 WATT RF OUTPUT

Maximum RF Output Power: 5 Watts

The UHF400R provides full-power UHF CB transmission despite being designed around convenient in-dash operation.

Combined with an appropriately selected 50-ohm antenna system, this makes it suitable for demanding transport, convoy, worksite and touring communications.

⚠️ Actual communication range depends heavily on antenna selection, antenna mounting location, terrain, buildings, surrounding vehicles and whether simplex or repeater operation is being used.

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🌡️ EXTERNAL HEAT SINK FOR DEMANDING USE

The UHF400R incorporates an external heat sink designed to assist with heat dissipation during operation.

This is particularly useful in commercial environments where radios can see frequent transmission use and may be installed within crowded dashboards or equipment consoles.

The design helps the radio maintain reliable full-power operation under appropriate installation conditions.

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🔊 BUILT-IN DYNAMIC FRONT SPEAKER

The built-in front-facing dynamic speaker makes the UHF400R particularly practical for in-dash installation.

Unlike radios where the speaker may be facing downwards or hidden behind trim, front-directed audio helps keep incoming communications clear and accessible to the driver.

Maximum Receiver Audio Output: 3 Watts

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🎛️ SIMPLE ROTARY CONTROLS

The UHF400R uses dedicated rotary controls for:

• 📡 Channel selection
• 🔇 Squelch adjustment
• 🔊 Volume control

This straightforward control layout is particularly useful in trucks and machinery where operators need to adjust the radio quickly without working through multiple menus.

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📡 80 UHF CB CHANNELS

The UHF400R supports:

80 UHF CB Channels

75 Voice Channels

Channel Spacing: 12.5kHz

UHF CB TX/RX Frequency Range: 476.425–477.4125MHz

This provides compatibility with the Australian UHF CB channel system.

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📻 200 USER-PROGRAMMABLE RECEIVE-ONLY CHANNELS

In addition to the standard UHF CB channels, the UHF400R provides up to 200 user-programmable receive-only channels.

The technical information lists receiving coverage extending through the 400–512MHz range.

This can provide useful additional monitoring capability where appropriate frequencies are programmed.

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📶 DUPLEX REPEATER OPERATION

The UHF400R supports both simplex operation and repeater operation with a +750kHz transmit offset.

Where an appropriate UHF CB repeater is within coverage, duplex operation can extend communication beyond normal direct vehicle-to-vehicle range.

⚠️ Duplex does not automatically increase range. A suitable repeater must be available and within communication range.

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🔍 OPEN, INSTANT & PRIORITY SCANNING

The UHF400R includes multiple scanning modes:

• 🔍 Open Scan
• ⚡ Instant Scan
• ⭐ Priority Scan

This allows users to monitor channel activity more effectively rather than remaining on a single channel at all times.

Scanning Speed: Approximately 130ms Per Channel

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🔤 5-DIGIT SELCALL ID

The UHF400R incorporates a five-digit Selcall identification system with alpha display capability.

Selcall can provide selective signalling between compatible radios, which may be useful in transport fleets and organised work environments.

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🔐 38 CTCSS & 104 DCS CODES

The radio provides:

38 CTCSS Codes

104 DCS Codes

These signalling systems can help compatible groups reduce unwanted received audio from other users on the same channel.

⚠️ CTCSS and DCS do not make a UHF CB channel private or encrypted. Other users can still transmit on and monitor the underlying channel.

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🎙️ AUTOMATIC LEVEL CONTROL – ALC

Automatic Level Control is designed to maintain more consistent transmitted audio levels.

This can be useful in fleet environments where different operators may hold the microphone at different distances or speak at different volumes.

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🎙️ REAR MICROPHONE CONNECTION

The UHF400R includes a rear microphone connection for applications where alternative microphone cable routing is preferred.

The EXTC400 is not included with the standard radio.

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🛡️ BUILT-IN ELECTRICAL PROTECTION

The UHF400R incorporates several electrical protection features:

• ⚡ Over-voltage protection via voltage regulation
• 🛡️ Over-current protection via 2A fuse
• 🔄 Reverse-polarity protection via series diode

These protections complement, rather than replace, correct electrical installation practices.

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🔧 50-OHM ANTENNA SYSTEM

Required Antenna Impedance: 50 Ohms

A properly selected and installed UHF antenna is critical to achieving good real-world communication performance.

The best antenna will depend on the vehicle and operating environment. Highway trucks, open-country touring vehicles and equipment operating in hilly terrain may benefit from different antenna characteristics.

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📋 TECHNICAL SPECIFICATIONS

Brand: Oricom

Model: UHF400R

Product Type: Heavy-Duty UHF CB Radio

Installation Style: DIN Size

RF Output Power: 5 Watts Maximum

UHF CB TX/RX Frequency Range: 476.425–477.4125MHz

Additional Receive Coverage: 400–512MHz

Programmable Receive-Only Channels: Up to 200

Number of UHF CB Channels: 80

Voice Channels: 75

Channel Spacing: 12.5kHz

Operating Modes: Simplex & Repeater

Repeater TX Offset: +750kHz

Scanning Modes: Open / Instant / Priority

Scanning Speed: 130ms Per Channel

Priority Channel: Yes

Selcall: 5-Digit ID with Alpha Display

CTCSS Codes: 38

DCS Codes: 104

Antenna Impedance: 50 Ohms

Operating Voltage Range: 10–30V DC

12V / 24V Auto Switching: Yes

Transmit Current Consumption: Approximately 1.6A with 50-Ohm Antenna Termination

Over-Voltage Protection: Voltage Regulator

Over-Current Protection: 2A Fuse

Reverse-Polarity Protection: Series Diode

Frequency Stability: ±2.5ppm

Modulation: F3E / FM

Maximum Deviation: 2.5kHz

Spurious Emissions: <-30dBc

TX Audio Pre-Emphasis: 6dB/Octave from 300Hz to 3kHz

Receiver Circuit Type: Dual Conversion Superheterodyne

Intermediate Frequencies: 1st IF 30.85MHz / 2nd IF 450kHz

Maximum Usable Sensitivity: < -123dBm at 12dB SINAD

Maximum Audio Output Power: 3 Watts

RX Audio De-Emphasis: -6dB/Octave from 300Hz to 3kHz

Spurious Immunity: >70dB

Built-In Speaker: Dynamic Front Speaker

Channel Control: Rotary

Squelch Control: Rotary

Volume Control: Rotary

Automatic Level Control: Yes

Rear Microphone Connection: Yes

Rear Microphone Extension Cable: Optional EXTC400 Required

Compliance: AS/NZS 4365:2011

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🔧 INSTALLATION CONSIDERATIONS

• Suitable for compatible 12V or 24V electrical systems within the specified 10–30V DC range
• Retain the specified 2A fuse protection
• Use an appropriate 50-ohm UHF antenna system
• Position the antenna to achieve suitable coverage for the vehicle
• Allow appropriate airflow around the external heat sink
• Route power and antenna cables away from excessive heat and abrasion
• Plan microphone routing before completing the DIN installation
• Use the optional EXTC400 where the rear microphone extension configuration is required

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❓ FREQUENTLY ASKED QUESTIONS

Is the UHF400R designed specifically for trucks?

Yes. It is designed as a heavy-duty UHF CB for Australian transport applications, with features such as 12V / 24V auto switching, a front speaker, rotary controls and an external heat sink making it particularly suitable for commercial vehicles.

Can I install it directly into a 24V truck?

Yes, provided the vehicle supply is within the UHF400R's stated 10–30V DC operating range. The radio features automatic 12V / 24V switching.

Do I need a 24V-to-12V reducer?

Not simply to operate the UHF400R from a compatible 24V vehicle system. Its 10–30V operating range is specifically designed to accommodate both nominal 12V and 24V systems.

Is it still a full 5 Watt radio on 24V?

The UHF400R is specified with a maximum RF output of 5 Watts and is designed for operation throughout its supported 10–30V supply range.

Why does it have an external heat sink?

The heat sink assists with heat dissipation, which is particularly useful for demanding commercial applications where the radio may transmit frequently.

Does it have a speaker built in?

Yes. The UHF400R has a built-in dynamic front speaker with up to 3 Watts maximum audio output.

Is a front speaker better for a truck installation?

It can be. With the radio mounted into a dashboard or DIN-style location, a front-facing speaker directs audio toward the cabin rather than into the dash structure.

Does it have the full 80 Australian UHF CB channels?

Yes. The UHF400R supports 80 UHF CB channels, with 75 identified as voice channels.

What are the extra 200 channels?

They are user-programmable receive-only channels. They allow additional compatible frequencies to be monitored but do not provide transmission outside the normal UHF CB channels.

Can I transmit anywhere between 400 and 512MHz?

No. The broader 400–512MHz coverage relates to additional receiving capability. UHF CB transmission remains within the specified Australian UHF CB frequency range.

Can I use repeaters with this radio?

Yes. Duplex repeater operation is supported using the standard +750kHz transmit offset.

Will using duplex automatically give me more range?

No. Duplex only provides additional range when a suitable repeater is available and within coverage.

How far will the UHF400R communicate?

There is no single accurate distance. UHF range depends heavily on terrain, antenna selection, antenna location, surrounding vehicles and whether communication is direct or through a repeater.

What antenna do I need?

The UHF400R requires a 50-ohm antenna system. The ideal antenna gain and mounting position depend on whether the vehicle operates mainly on open highways, mixed terrain, urban areas or hilly country.

Does an antenna come with it?

An antenna is not identified as included in the information provided here, so check the package contents before ordering if you require a complete radio and antenna installation.

What does Selcall do?

The UHF400R provides a five-digit Selcall identification system that can be used for selective signalling between compatible radios.

What are CTCSS and DCS used for?

They allow compatible radios to mute transmissions that do not contain the selected signalling code, helping reduce unwanted audio on busy shared channels.

Do CTCSS or DCS make communications private?

No. They are signalling and squelch functions, not encryption. Other users can still monitor the underlying UHF CB channel.

What scan modes does it have?

The UHF400R provides open, instant and priority scan modes, along with a dedicated priority-channel function.

Can I relocate the microphone connection?

The radio includes a rear microphone jack. The optional Oricom EXTC400 extension cable is required for the applicable rear-extension arrangement.

Does the EXTC400 come with the radio?

No inclusion is stated here. The EXTC400 is described as an optional extension cable and should be purchased separately where required.

How much power does the radio use when transmitting?

The specified transmit current consumption is approximately 1.6A with a 50-ohm antenna termination.

What size fuse does it use?

The specification lists a 2A fuse for over-current protection.

Does it have reverse-polarity protection?

Yes. The UHF400R uses a series diode for reverse-polarity protection.

Is it suitable for agricultural machinery and earthmoving equipment?

Yes. Its heavy-duty design, 10–30V operating range and straightforward rotary controls make it well suited to many agricultural and plant-equipment installations.

Would this be better than a compact micro UHF for a truck?

The UHF400R is particularly attractive where you have suitable dashboard space and want a dedicated front speaker, conventional rotary controls, direct 24V compatibility and additional receive-only channel capability. A micro UHF may be preferable where physical mounting space is the main concern.

What should I check before buying?

Confirm you have a suitable installation position, make sure the vehicle supply is within the 10–30V DC operating range, select an appropriate 50-ohm antenna and decide whether you need the optional EXTC400 cable for rear microphone routing.

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🚛 HEAVY-DUTY UHF COMMUNICATION BUILT FOR AUSTRALIAN TRANSPORT

The Oricom UHF400R combines full 5 Watt UHF CB performance with the features that matter in demanding commercial vehicles.

With automatic 12V / 24V operation, a built-in dynamic front speaker, traditional rotary controls, external heat-sink design, 80 UHF CB channels, 200 programmable receive-only channels, Selcall, duplex repeater capability and multiple scan modes, it is built to be practical and dependable behind the wheel.

For trucks, transport fleets, agricultural machinery and commercial vehicles where clear communication and straightforward operation matter, the UHF400R is a serious heavy-duty UHF solution.