Motorola GP328 Two Way Radio (Discontinued)
Discontinued — contact us for a replacement
DISCONTINUED – Replaced by the Motorola DP2400e and Motorola DP4400e
The Motorola GP328 is the practical Two-Way radio solution for professionals who need to stay in contact. This practical radio increases productivity by streamlining your radio use.
- Frequency Band: 136 – 174 MHz, 403 – 470 MHz, 450 – 527 MHz
- Power: 5W VHF & 4W UHF
- Channel Capacity: 16 Channels
Product enquiry — need a formal quote, availability, technical help or an alternative? Send us your details below.
Unsurpassed Audio Quality
Equipped with Motorola’s special voice processing technology, X-PAND™ and LLE, enables crisper, clearer and stronger audio quality, allowing you to keep communicating, even in noisy environment.
Smart Choices
Motorolaâs unique MDC signalling allows the transfer of data communications at the high-speed rate of 1200 bits per second.
The Forward error correction technology enables radio to receive a message, like call alert and send out the PTT-ID even though the voice signal is too weak to be heard.
Expandable & easy to install in the field, by simply adding on option boards like voice storage board whenever your needs arise. The option board also allows up to 2 minutes of recording.
The plug-in man-down option board feature will trigger an emergency procedure in situations where the radio is horizontal or still for longer than a pre-programmed time. It is critical for radio users who work alone or in isolated environments.
The GP328 is certified by the US Factory Mutual standard intrinsically safe to operate in a hazardous atmosphere.
The built-in voice-activated feature (VOX) enables users to transmit their message in a hands-free environment, without pressing the push-to-talk button.
Easy To Use
Switchable RF Power Levels: with one button, users can switch between high and low power with reference to their specific application to conserve battery life.
Tri-colour LED Battery Gauge indicates battery status with early warning on low battery strength.
Tone Tagging allows 8 different ringing tones to be assigned to 8 specific users/talkgroups making audio caller identification to these 8 groups possible.
Lightweight Lithium Ion battery option makes the radio one of the lightest in its range.
Additional information
| Analog | Yes |
|---|---|
| Digital | No |
| Bluetooth | No |
| WiFi | No |
| Frequency Band | VHF, UHF-1, UHF-2 |
| Intrinsically Safe | No |
| IP Rating | No |
| Channel Capacity | 16 |
| Power (W) | 4W, 5W |
| Keypad | No |
| Screen | No |
| Side Connector | M4 |
| Manufacturer | Motorola |
Find the right earpiece, headset or microphone
Accessories connect to two-way radios with different plug types. Check your radio’s connector before ordering, or call us on 1300 266 682 and we’ll confirm compatibility for you.
Frequently Asked Questions
How Far Can Two-Way Radios Reach?
Two-way radios operate using line-of-sight communication, which means buildings, hills, steel structures and other obstacles can affect range. Actual distance depends on the environment, radio power, antenna type and system setup.
Typical examples:
- Small offices or retail: hundreds of metres
- Warehouses and construction sites: 1–3 km
- Open outdoor areas: several kilometres
- Repeaters or Push-to-Talk over Cellular systems: Australia-wide coverage
If coverage is critical, Radio Industries can help design the right communication solution.
What Channels Can I Use?
In Australia, radios can operate on:
- UHF CB channels (1–80) – public shared channels available for general use
- Private licensed frequencies – dedicated channels licensed through ACMA for business use
- Digital radio systems – for improved audio and advanced features
- Push-to-Talk over Cellular (PoC) – communication over mobile networks and Wi-Fi
The right option depends on your application and operating environment.
Which Radio Is Best?
There is no one-size-fits-all answer. The best radio depends on:
- Your industry
- Required coverage area
- Team size
- Indoor or outdoor use
- Safety requirements
- Noise levels
- Whether you require UHF CB, licensed channels or nationwide communication
A warehouse team may need digital radios, while transport fleets may benefit from Push-to-Talk over Cellular systems.
Do I Need A Private Frequency?
Not always. UHF CB channels are suitable for many general communication applications.
However, private frequencies are recommended where:
- Communication is safety critical
- Teams operate around cranes or major construction projects
- Privacy is important
- Multiple users share the same location
- Interference must be minimised
Dedicated channels help improve reliability and reduce unwanted outside traffic.
What Is The Difference Between a Two-Way Radio, Walkie Talkie and Handy Talkie?
They generally refer to the same type of device.
In professional environments, Two-Way Radio is the preferred industry term. “Walkie Talkie” and “Handy Talkie” are commonly used for recreational or consumer products.
What Is The Difference Between Analogue and Digital Radios?
Analogue radios use traditional radio technology and are often suitable for basic communication requirements.
Digital radios provide:
- Clearer audio quality
- Better noise reduction
- Longer battery life
- Improved coverage performance
- Advanced features such as private calling and GPS
Digital systems are commonly used by businesses requiring higher performance and reliability.
What Is Push-to-Talk Over Cellular (PoC)?
Push-to-Talk over Cellular works like a two-way radio but uses 4G, 5G and Wi-Fi networks instead of traditional radio signals.
Benefits include:
- Australia-wide coverage
- GPS tracking
- Group communication
- No repeater infrastructure required
- Easy expansion across multiple locations
This solution is ideal for transport, security, events and nationwide operations.
Can Two-Way Radios Work Australia-Wide?
Traditional radios have distance limitations unless repeaters are used.
For nationwide communication, many businesses choose Push-to-Talk over Cellular systems, which operate across mobile networks and Wi-Fi.
Can Different Brands Of Radios Communicate Together?
Sometimes.
Compatibility depends on:
- Frequency settings
- Channel programming
- Analogue or digital mode
- Signalling protocols (IDAS, DMR, NXDN, TETRA, P25)
- System configuration (Capacity Plus, Capacity Max, P25)
Even radios from different manufacturers may communicate if correctly programmed.
Do Radios Need Programming Before Use?
Many professional radios require setup before deployment.
Programming may include:
- Channel configuration
- Private frequencies
- User groups
- Emergency functions
- Scan lists
- Button customisation
Radio Industries can pre-program and configure systems before dispatch.
Can I Use Headsets With Two-Way Radios?
Yes. Many industries use headsets and accessories to improve communication and safety.
Popular options include:
- Noise-cancelling headsets
- Hearing protection communication headsets
- Earpieces
- Remote speaker microphones
- Push-to-talk accessories
These are commonly used in construction, security, industrial sites and events.
Are Two-Way Radios Waterproof?
This depends on the model.
Many commercial radios include protection ratings such as:
- IP54 – Protected against limited dust ingress and resistant to water splashes from any direction. Suitable for indoor use, retail, warehouses and light outdoor environments.
- IP67 – Fully protected against dust and can withstand temporary immersion in water up to 1 metre for up to 30 minutes. Commonly used on construction sites, security operations and harsh environments.
- IP68 – Fully dustproof with enhanced water protection beyond IP67 standards. Exact depth and duration vary by manufacturer, but these radios are designed for more demanding environments with heavy dust, rain and exposure to water.
The right rating depends on your work environment.
Can Radios Be Used On Construction Sites?
Yes. Two-way radios are widely used across construction projects for coordination, safety and productivity.
Many sites use:
- Rugged digital radios
- Hearing protection headsets
- Vehicle-mounted radios
- Dedicated licensed frequencies
Radio Industries can recommend systems suited to site conditions and OH&S requirements.
Do You Offer Repairs And Ongoing Support?
Yes.
Radio Industries provides:
✔ Repairs and servicing
✔ Programming and setup
✔ Genuine parts and accessories
✔ System upgrades
✔ Technical support
✔ Australia-wide assistance
We support customers long after the initial purchase.
Still Not Sure Which Communication Solution You Need?
Every site and business is different. Speak with Radio Industries for expert advice on choosing the right radio communication system for your team.
Why Radio Industries? Two-way radio specialists since 1985, with Australia-wide supply, programming and support. About us → · Working in a hazardous area? Intrinsically safe radios →