In high-stakes environments where communication is crucial, public safety professionals need a tool that’s reliable, secure, and easy to carry. The Motorola APX 4000 answers that call with a rugged yet compact design, advanced digital audio, and Project 25 (P25) compliance. Whether you’re in law enforcement, EMS, or campus security, the APX 4000 delivers dependable voice communication when it matters most.
Motorola designed this radio to meet the needs of budget-conscious agencies looking for an entry-level P25 solution without sacrificing performance or durability.
What Is the Motorola APX 4000?
The Motorola APX 4000 is a single-band P25 Phase 2-capable portable two-way radio developed for users who need essential features in a compact and cost-effective form. It belongs to the trusted APX series, which is widely used by first responders and government agencies across the country.
With its lightweight design, intuitive interface, and clear digital audio, the APX 4000 provides a solid communication solution for both daily operations and emergency response.
Key Features of the Motorola APX 4000
Compact and Lightweight
Weighing just under 11 ounces with the battery, the APX 4000 is one of the most compact radios in the APX lineup. It’s easy to wear all day without fatigue—perfect for patrol officers, campus police, or EMTs.
P25 Phase 2 Operation
The radio is compliant with APCO P25 Phase 1 and Phase 2 standards, ensuring interoperability across agencies and jurisdictions while maximizing bandwidth efficiency.
Clear, Loud Audio
Equipped with Noise Suppression and AMBE+2™ digital voice coding, the APX 4000 delivers crisp and intelligible audio even in high-noise environments like traffic scenes or construction zones.
Rugged Design
The APX 4000 meets MIL-STD-810 specifications and has an IP67 rating, meaning it’s dust-tight and waterproof for up to 30 minutes in 1 meter of water—ideal for harsh field conditions.
Simplified Interface
It features top display and limited keypad options, with programmable buttons for frequently used functions. The intuitive layout ensures fast, one-handed operation.
AES and ADP Encryption (Optional)
For secure communication, the APX 4000 supports AES-256 and ADP encryption. This makes it suitable for law enforcement, SWAT teams, and any agency that requires encrypted voice traffic.
GPS and Over-the-Air Programming (Optional)
With optional GPS tracking and OTAR/OTAP (Over-the-Air Rekeying/Programming), the APX 4000 can be remotely managed, reducing downtime and enhancing coordination.
Motorola APX 4000 Specifications
| Feature | Specification |
| Frequency Bands | VHF, UHF R1/R2 |
| Channels | Up to 512 |
| Display | 1-line top display |
| Keypad Options | Limited or None |
| Encryption | AES-256, ADP (Optional) |
| Battery Life | Up to 14 hours (typical use) |
| Waterproof Rating | IP67 |
| Audio Output | 1W speaker with noise suppression |
| Dimensions | 5.1 x 2.4 x 1.4 in (with battery) |
| Weight | Approx. 10.6 oz (with battery and antenna) |
Who Should Use the APX 4000?
The Motorola APX 4000 is designed for frontline personnel and support staff who require mission-ready performance in a smaller, more affordable radio. Ideal users include:
- Patrol officers and sheriff’s deputies
- Campus and hospital security teams
- Firefighters using VHF/UHF frequencies
- Emergency medical services (EMS)
- Corrections officers and jail staff
- Transportation safety teams
Its size and weight make it a great backup radio or a primary device for users who don’t need all the high-end features of flagship models.
Pros and Cons
Pros:
- Affordable entry point into the APX series
- Compact and easy to carry
- Loud, clear audio with digital noise suppression
- Secure communications with optional encryption
- Durable and water-resistant
Cons:
- Single-band only (no multi-band support)
- Smaller screen and no full keypad
- Limited features compared to APX 6000 or 8000
- No Wi-Fi or LTE integration
How the APX 4000 Compares
| Feature | APX 4000 | APX 6000 | APX 8000 |
| Bands | Single-band | Single-band | All-band (VHF, UHF, 700/800) |
| Display | Top display only | Top + front display | Full-color front and top display |
| Keypad | Optional limited | Optional full | Full keypad standard |
| Encryption | Optional | Standard | Advanced |
| Size | Most compact | Compact | Larger |
| Use Case | Budget-conscious agencies | Tactical professionals | Multi-jurisdiction response teams |
The Motorola APX 4000 is a compact, durable, and budget-friendly option for professionals who need secure and reliable communication on the go. While it lacks the multi-band and advanced features of the higher-end APX models, it excels in simplicity, durability, and ease of use.
If you’re looking to equip your team with radios that are tough, secure, and easy to carry, the APX 4000 is a solid investment in mission-critical communication.