Icom IP503H & IP503H Lite | LTE 4G/3G PTT Radios
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The Icom IP503H and IP503H Lite are LTE push-to-talk handheld transceivers offering full-duplex communication, nationwide coverage, and crystal-clear audio. The IP503H operates on the Telstra network, while the IP503H Lite is a multi-carrier version compatible with standard SIM cards — giving users flexible, reliable, and instant communication options.
Key Features (Both Models)
- Full-duplex LTE push-to-talk (4G/3G networks)
- Instant, wide-area communication – no repeaters required
- Group, individual, and priority interrupt calls
- Compact and lightweight (240 g with battery and antenna)
- Powerful 900 mW audio for clear, loud communication
- Built-in GPS and Bluetooth® connectivity
- Emergency, man down, and lone worker alerts
- Voice recording and playback features
- 500-contact address book for user and group lists
- IP67 waterproof and dustproof rating
- Long battery life – up to 17 hours (BP-272)
- Compatible with Icom VE-PG4 RoIP gateway for system integration
- Supplied with Li-ion battery, belt clip, antenna, and hand strap
Product enquiry — need a formal quote, availability, technical help or an alternative? Send us your details below.
Model Comparison
Icom IP503H (Telstra Solution)
The IP503H is the Telstra-based version of Icom’s LTE push-to-talk handheld radio. It uses Telstra’s enterprise-grade LTE network to deliver secure, wide-area communication. This model is ideal for organisations that require a closed, managed network for consistent coverage and performance.
Highlights:
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Operates on Telstra LTE/3G networks (closed network)
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Optimised for Australian business and government users
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Full-duplex communication for natural, simultaneous talking and listening
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Compatible with VE-PG4 RoIP gateway for extended integration
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Designed for mission-critical and enterprise-level reliability
Best For:
Government agencies, critical infrastructure, logistics, and industrial operations needing secure Telstra coverage.
Icom IP503H Lite (Multi-Carrier Solution)
The IP503H Lite provides the same advanced LTE features as the IP503H but operates with a multi-carrier SIM solution, offering flexible connectivity across major Australian networks. It’s ideal for users who need wide-area communication without being tied to a single carrier.
Highlights:
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Supports standard SIM cards (multi-carrier compatible)
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Same full-duplex performance as IP503H
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Ideal for cross-network or private SIM solutions
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Includes GPS, Bluetooth, and voice message functions
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Compact, rugged, and easy to operate in the field
Best For:
Businesses, contractors, and fleet users needing reliable LTE communication with freedom to choose their preferred carrier.
Why Choose Icom LTE Push-to-Talk Radios
Both the IP503H and IP503H Lite combine the simplicity of push-to-talk radios with the coverage of 4G LTE networks. They eliminate the need for traditional repeaters, allowing teams to communicate instantly across cities or states.
Their full-duplex capability means users can talk and listen at the same time — just like a mobile call, but with the speed and efficiency of radio communication. The result is faster coordination, fewer delays, and improved team safety.
Both models feature Bluetooth® connectivity, GPS tracking, and IP67 protection, ensuring performance in harsh environments. When integrated with Icom’s VE-PG4 RoIP gateway, they can also connect to digital (IDAS™), analog, or Wi-Fi radio networks — creating one unified communication system.
Included Accessories
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BP-272 Li-ion battery pack
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Antenna
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Hand strap
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Belt clip
Note: The IP503H uses Telstra’s private LTE network, while the IP503H Lite operates on multi-carrier commercial SIM cards.
Please confirm network compatibility and activation requirements before ordering. This product also requires system setup, a subscription, and SIM activation through Icom’s LTE-CONNECT service with a monthly or annual payment plan. Coverage availability may vary by region.
Additional information
| Analog | No |
|---|---|
| Bluetooth | Yes |
| GPS | Yes |
| IP Rating | IP67 |
| Manufacturer | Icom |
| Product Type | Radio – Portable (Handheld) |
| Radio Type | PoC (Push To Talk Over Cellular) |
| Side Connector | Icom 14 Pin |
| Warranty | 2 Years |
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 →