Motorola APX 4500 — 110W P25 Phase 2 Command Mobile
Full-size P25 Phase 2 mobile with 110W RF output across VHF and 700/800MHz — the highest power class in the comparison — in a 3.4kg chassis. Dual control heads support two-position operation so command vehicles run dispatch from front and rear seats with one radio. Full-color display with adaptive brightness, Wi-Fi-enabled over-the-air programming, and enhanced audio architecture for high-noise patrol environments. AES-256 encryption with OTAR over-the-air key management, GPS/GLONASS. Built for police interceptors, fire command units and EMS supervisor vehicles where P25 Phase 2 trunking compliance, 110W coverage reach and encrypted multi-agency interoperability are contractual requirements.
Motorola DM4400e — 1-45W Voice-Only DMR Terminal at 1.2kg
Streamlined DMR mobile sharing the same 1-45W variable RF output and DMR Tier III / Capacity Max compatibility as the DM4601e — but without display, keypad, Wi-Fi or Bluetooth. GPS-only for fleet tracking (no GLONASS), 98 phon audio output with intelligent volume adjustment for engine-noise environments, IP54 with MIL-STD-810G, AES-256 encryption. 1.2kg — 200g lighter than the DM4601e thanks to simplified electronics — with remote-mount installation via control head cable. The voice-only terminal for taxi fleets, delivery vans, school buses and municipal service vehicles where push-to-talk dispatch is the only requirement.
| Specification | APX 4500 | DM4400e |
|---|---|---|
| Protocol | P25 Phase 2 public-safety | MOTOTRBO DMR (Tier III / Capacity Max) |
| RF Output | 110W max (VHF + 700/800MHz dual-band) | 1-45W variable |
| Chassis | Full-size 3.4kg, dual control heads (front + rear seats) | Compact 1.2kg no-display, remote-head option |
| Display & Control | Full-color display with adaptive brightness | None — voice-only PTT |
| Audio | Enhanced high-noise patrol architecture | 98 phon intelligent volume adjustment |
| Encryption | AES-256 + OTAR key management | AES-256 |
| Location | GPS/GLONASS | GPS only |
| Fleet Programming | Wi-Fi over-the-air | Simplified electronics, wired service |
The Vehicle-Installation Decision
Choose the APX 4500 when the vehicle is part of a public-safety response chain: police interceptors, fire command units and EMS supervisors operate under P25 Phase 2 trunking contracts where 110W coverage reach, OTAR key management, dual-head front-and-rear dispatch and multi-agency encryption are non-negotiable. Choose the DM4400e when the fleet needs disciplined voice dispatch at minimum hardware cost: taxi, delivery, school-bus and municipal fleets get the same 1-45W DMR foundation and AES-256 as higher-tier MOTOTRBO mobiles in a 1.2kg no-display package that survives engine noise with 98 phon audio — for less than half the weight of a command-class chassis. APX 4500 buys contractual P25 interoperability and 110W reach; DM4400e buys voice-only dispatch economics for commercial fleets.
