Motorola APX 4000 VHF P25 Portable Radio – H51KDF9PW6AN
The Motorola APX 4000 VHF P25 Portable Radio (Part #: H51KDF9PW6AN) is a rugged, professional-grade radio designed for reliable mission-critical communication. Built on Motorola’s ASTRO 25 P25 platform, this VHF portable radio combines advanced digital communication, TDMA capability, GPS/GNSS, Bluetooth, trunking support, noise reduction, and flexible encryption features in a compact and durable design.
With 512 channels and support for P25/TDMA, the APX4000 is an excellent choice for public safety, government, utilities, transportation, security, public works, and other professional organizations that require dependable VHF communications.
Motorola APX 4000 VHF H51KDF9PW6AN Features
This specific APX 4000 configuration includes a comprehensive set of professional features and software capabilities:
Manufacturer: Motorola
Model: APX4000
Part #: H51KDF9PW6AN
Primary Band: VHF
Channels: 512
P25 digital operation
P25 Phase 2 / TDMA capability
ASTRO IMBE digital operation
ASTRO 25 9600 Baud trunking
SmartZone Omnilink MultiZone operation
GPS/GNSS operation enabled
Bluetooth operation enabled
APCO Packet Data Interface
Conventional Voting Scan
Extreme one-sided noise reduction
Hardware multikey encryption
ADP software encryption
Legacy software system key enabled
Flashcode: 142060-J11690-0
The supplied flashcode identifies the feature configuration of this particular radio. The programmed features include:
Q806 – ASTRO IMBE Digital Operation
Provides digital voice operation using Motorola’s ASTRO IMBE digital technology.
H869 – Hardware Multikey Encryption
Provides hardware-based multikey encryption capability, allowing supported encryption keys and algorithms to be managed on the radio.
QA00570 – Primary Band: VHF
Identifies VHF as the radio’s primary operating band.
QA00583 – Bluetooth Operation Enabled
Enables Bluetooth functionality for compatible wireless accessories and devices.
QA01749 – Legacy Software System Key Enable
Enables legacy software system key functionality where applicable.
QA01833 – Extreme 1-Sided Noise Reduction
Provides advanced noise-reduction capability designed to improve voice intelligibility in challenging environments.
Q361 – ASTRO 25 9600 Baud Trunking
Provides support for compatible ASTRO 25 9600-baud trunking systems.
Professional P25 and TDMA Communication
The APX 4000 supports P25 digital communications and TDMA, making it suitable for organizations operating compatible P25 infrastructure. Its support for ASTRO 25 trunking and SmartZone Omnilink MultiZone operation provides additional flexibility for users operating across larger or interconnected radio systems.
Because P25 features depend on system infrastructure and programming, buyers should verify compatibility with their existing radio system before purchasing.
GPS/GNSS and Bluetooth
This particular H51KDF9PW6AN configuration has GPS/GNSS operation enabled, providing location capability on supported systems and applications.
Bluetooth operation is also enabled, allowing compatible wireless accessories and devices to be used with the radio. This can be especially useful for professional users who need greater mobility while working in the field.
Advanced Noise Reduction
Communication can become difficult around vehicles, machinery, emergency equipment, and other loud environments. The APX4000 includes Extreme 1-Sided Noise Reduction (QA01833) to help improve voice intelligibility in challenging conditions.
This makes the radio suitable for users who need dependable communication in demanding operational environments.
Encryption Capability
This specific APX 4000 includes Hardware Multikey Encryption (H869) and ADP Software Encryption (Q667).
Limited Encryption Upgrades Available
Additional encryption algorithms may be available as a custom upgrade, subject to the radio’s existing configuration and available upgrade inventory.
Available upgrade options may include:
AES 256-bit
DES
DES-XL
ADP
If more than one encryption algorithm is required, the radio must already support multikey functionality. OTAR (Over-the-Air Rekeying) requirements also depend on the radio already having the appropriate OTAR feature enabled.
Encryption upgrades are limited and subject to availability. If you require an additional encryption algorithm, please contact us for a custom quote before ordering.
We strongly recommend that customers consult their local radio administrator or system manager to confirm the required encryption algorithm, key management requirements, OTAR requirements, and compatibility with their existing P25 system.
Built for Professional Use
The Motorola APX 4000 is designed for professional users who need dependable communication equipment capable of handling demanding field conditions.
It is well suited for:
Law enforcement
Fire and emergency services
Public safety
Government agencies
Utilities
Transportation
Public works
Security organizations
Industrial operations
Field-service teams
Why Choose This Motorola APX4000?
The Motorola APX 4000 H51KDF9PW6AN offers a strong combination of P25 digital communication, TDMA, GPS/GNSS, Bluetooth, advanced noise reduction, trunking capabilities, and encryption functionality.
With 512 channels, this configuration provides substantial capacity for organizations managing multiple channels, talkgroups, or operational requirements.
For customers looking for a used Motorola APX 4000 VHF P25 radio, this configuration can provide professional Motorola ASTRO 25 capabilities at a potentially lower cost than purchasing new equipment.
Product Specifications
Specification
Details
Manufacturer
Motorola
Model
APX4000
Part Number
H51KDF9PW6AN
Primary Band
VHF
Channel Capacity
512 channels
Technology
P25 / TDMA
Digital Operation
ASTRO IMBE
Trunking
ASTRO 25 9600 Baud
MultiZone
SmartZone Omnilink
GPS/GNSS
Enabled
Bluetooth
Enabled
Encryption
Hardware Multikey + ADP
Noise Reduction
Extreme 1-Sided Noise Reduction
Data
APCO Packet Data Interface
Scan
Conventional Voting Scan
Flashcode
142060-J11690-0
Important: Radio features and system compatibility depend on the exact radio configuration, firmware, programming, and infrastructure. P25 trunking, encryption, GPS/GNSS, Bluetooth, OTAR, and other advanced functions may require compatible system infrastructure and appropriate programming. Verify the exact configuration with your radio administrator before deployment.
Purchase assurance: This radio purchase is guaranteed for 3 months, subject to the applicable terms and conditions of sale.
For encryption upgrades, availability is limited. Additional algorithms must be custom quoted, and customers should verify their requirements before ordering.
