Motorola GP328 Professional Two-Way Radio

The Motorola GP328 is a professional-grade analog two-way radio designed for reliable and efficient communication in demanding business and industrial environments. Built as part of Motorola’s Professional Series, the GP328 focuses on clear audio, straightforward operation, rugged construction and dependable communication for users who need to stay connected while working.

With 16 channels, switchable RF power levels, Motorola X-PAND™ voice processing, Low Level Expansion (LLE), emergency functionality, VOX capability and MIL-STD environmental protection, the GP328 is well suited for professional teams operating in security, construction, industrial, hospitality, logistics, facility management and event environments.

Important: The Motorola GP328 is a discontinued/legacy model and is no longer available as a current product from Motorola Solutions. Availability and the condition/authenticity of individual units should therefore be confirmed with the seller before purchase.

Key Features

Clear and Reliable Audio

The GP328 incorporates Motorola’s X-PAND™ voice processing technology and Low Level Expansion (LLE) to provide clearer, stronger and more intelligible audio, particularly in noisy working environments. This makes communication easier when teams are operating around machinery, construction activity, traffic or other sources of background noise.

Professional 16-Channel Communication

The radio supports 16 channels, allowing users to organize communication across different teams, departments, work areas or operational requirements. Channel configuration depends on the specific radio programming and frequency variant.

Switchable RF Power Levels

The GP328 supports selectable high- and low-power operation. Users can choose an appropriate power level for their operating requirements, while lower power can help conserve battery life when maximum output is not required.

Built for Demanding Work Environments

The GP328 was designed with a rugged professional housing and is specified to meet MIL-STD-810 C, D and E environmental standards. Motorola also lists the radio as IP54 rated, making it suitable for a variety of demanding workplace environments.

Hands-Free VOX Operation

The built-in Voice-Operated Transmit (VOX) capability allows compatible hands-free communication without continuously pressing the Push-to-Talk button, which can be useful when workers need to keep their hands available for operational tasks.

Emergency Functionality

The GP328 includes an emergency button, providing users with an additional communication option for critical situations. Specific emergency behavior and programming can depend on the radio configuration.

Battery Status Indicator

A tri-colour LED battery gauge provides visual indication of battery status and gives users an early warning when battery strength is getting low.

Tone Tagging

The GP328 supports Tone Tagging, allowing different ringing tones to be assigned to specific users or talkgroups, helping users distinguish incoming calls or communications. Motorola specifies support for up to eight different ringing tones for eight users/talkgroups.

Expandable Functionality

Motorola designed the GP328 with support for optional plug-in boards and accessories. Depending on the configuration, optional functionality can include features such as voice storage and man-down functionality. These should be treated as optional features rather than standard features on every GP328 unit.

Audio Performance

The GP328 is particularly suitable for workplaces where communication clarity is important. Motorola’s X-PAND™ technology and LLE are designed to improve voice intelligibility and maintain stronger audio performance in noisy environments.

This makes the radio useful for communication in areas such as construction sites, factories, warehouses, transportation facilities, security operations and large commercial properties.

Technical Specifications

Motorola’s official specifications list multiple frequency variants and different output levels depending on VHF/UHF configuration. Therefore, the exact frequency and power specification should be confirmed from the individual unit before purchase.

Frequency & Power Options

Depending on the specific GP328 variant, Motorola lists the following frequency ranges:

VHF: 136–174 MHz

UHF: 330–400 MHz, 403–470 MHz and 450–527 MHz

The official Motorola specification lists 5W output for the 136–174 MHz VHF version and 4W for the 403–470 MHz and 450–527 MHz UHF versions.

Because GP328 radios were produced in different regional and frequency configurations, customers should verify the exact frequency range of the particular unit before purchase.

Battery Performance

With the standard high-capacity NiMH battery and Motorola’s specified 5/5/90 duty cycle, the official GP328 specification lists approximately:

8 hours at High Power

10 hours at Low Power

Actual operating time can vary depending on transmission frequency, power setting, battery condition, accessories, operating temperature and usage pattern.

Rugged Construction & Environmental Protection

The Motorola GP328 was engineered for professional environments where radios may be exposed to demanding working conditions.

The radio is specified to meet MIL-STD-810 C, D and E requirements and carries an IP54 environmental protection rating according to Motorola documentation.

This makes the GP328 a suitable choice for businesses that require a practical and durable communication tool rather than a consumer-grade radio.

Professional Communication for Multiple Industries

The Motorola GP328 can be used in a wide range of professional environments, including:

Security Services
Useful for security guards, supervisors, facility security teams and personnel who need fast team communication.

Construction Sites
Helps supervisors, engineers, technicians and workers communicate across active construction areas.

Industrial Operations
Suitable for factories, plants, workshops and industrial facilities where reliable team communication is important.

Hotels & Hospitality
Can support communication between security, maintenance, housekeeping, operations and management teams.

Logistics & Transportation
Useful for warehouses, transport operations, loading areas and distribution facilities.

Events & Organizations
Can help event management, security, technical and support teams coordinate operations.

Facilities Management
Useful for communication between maintenance, security and facility operations teams.

Commercial & Business Operations
Suitable for businesses that require simple, fast and dedicated radio communication between mobile staff.

Why Choose Motorola GP328?

The GP328 remains a recognizable professional radio model because of its practical design, straightforward operation and professional-grade communication features.

Its key advantages include:

• Professional Motorola build quality
• Clearer audio with X-PAND™ and LLE technology
• 16-channel operation
• VHF and UHF variants
• Switchable RF power levels
• Emergency button
• VOX hands-free capability
• IP54 environmental protection
• MIL-STD-810 C/D/E compliance
• Battery status indication
• Tone Tagging
• Optional functionality through accessory/option boards
• Professional analog communication platform
• Suitable for a wide range of business and industrial applications

Simple & Practical Operation

One of the strengths of the GP328 is its straightforward interface. The radio does not use a display or complicated keypad, allowing users to focus on communication and their primary job responsibilities.

This simple design can be particularly useful for organizations where employees need to communicate quickly without navigating complex menus.

Optional Accessories

Depending on availability and configuration, GP328-compatible accessories can include:

• Batteries
• Chargers
• Remote speaker microphones
• Earpieces
• Surveillance accessories
• Heavy-duty headsets
• Helmet communication accessories
• Throat microphones
• Receive-only earpieces
• Antennas
• PTT accessories

Motorola’s official GP328 documentation lists a range of compatible accessories. Exact compatibility should be confirmed for the specific radio variant.

Who Is the Motorola GP328 For?

The Motorola GP328 is ideal for organizations that need simple, professional and reliable analog two-way communication without unnecessary complexity.

It can be considered for:

• Security companies
• Construction companies
• Factories
• Industrial facilities
• Hotels
• Restaurants and hospitality operations
• Warehouses
• Logistics companies
• Transportation businesses
• Event management companies
• Facility management teams
• Commercial organizations
• Maintenance teams
• Large work sites

Important Product Note

The GP328 is a legacy/discontinued Motorola Solutions model. Motorola Solutions officially states that the product has been discontinued and is no longer available as a current product from Motorola.

Therefore, when listing this product on an e-commerce website, it is better to clearly mention the actual condition of your specific stock, such as New Old Stock, Used, Refurbished or Pre-Owned, only when that description is accurate.

Similarly, claims such as “Original Motorola,” “Genuine,” “1-Year Warranty,” “Best Choice,” or a specific communication range should only be published when you can verify them for your actual inventory and sales terms.