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• Qualcomm Atheros IPQ4028 Quad-core ARM cortex-A7 710MHz CPU

• 2*256MB System Memory

• 32MB NOR Flash

• 2×2 On-board 5GHz radio, up to 867Mbps physical data rate

• 2×2 On-board 2.4GHz radio, up to 300Mbps physical data rate

• Supports Dynamic Frequency Selection (DFS)

1x M.2 Key B Connector Slot for 3G/4G or other USB modules

– Can support Quectel EM12-G 4G LTE module now !!! Same as EC25, EP06 or EM7455 modules


• 802.11n/ac Access Point

• Point-to-MultiPoint High Capacity Wireless Bridge

• Wireless Customer-Premises Equipment (CPE)

• 802.11ac Wave 2 LTE Gateway – WPJ428 board only provide M2 slot for 3G/4G module, LTE supported frequencies/channels and LTE supported antenna are determined by the 3G/4G module.

Max connected clients for 11ac radio in wpj428 is about 245users. (class C Network)


Product Type Wireless Embedded Board
Chipset IPQ4028
CPU Frequency 710MHz
Architecture ARM cortex-A7
System Memory 256MB
NAND Flash 128MB
Flash Memory 16MB
Wireless Standard 802.11n, 802.11g, 802.11b, 802.11ac, 802.11a
MIMO Channels 2×2
Frequency Range 2.412 ~ 2.472 GHz, 5.180 ~ 5.850 GHz
Wireless Speed 300Mbps, 867Mbps
NGFF Slot Single Slot
Interface 1x JTAG 20 Pin Conector, 1x Serial Port 12 Pin Connector, 1x NGFF (M.2) Slot, 2x Gigabit Ethernet Port, 4x U.FL Connector
Reset Button Hardware Reset, Software Reset
LED 7x LED Indicator
Power over Ethernet Passive POE support (LV version) or IEEE 802.3af, IEEE 802.3at (HV version)
DC Jack 12-24V (LV version) or 24V-48V (HV version)
Power Consumption 19W (board only)
Operating System CompexWRT or OpenWRT*
Certification RoHS Compliance
Temperature Range Operating: -20ºC to 70ºC, Storage: -40ºC to 90ºC
Humidity Operating:5% to 95% (non-condensing)
Extra 2x SIM Holder


2.4Ghz (Per Chain)
Data Rate TX RX
802.11b/g 6Mbps 23 -90
54Mbps 22 -75
11n HT20 MCS0 23 -90
MCS 7 20 -72
11n HT40 MCS0 23 -88
MCS 7 20 -70


WPJ428 Datasheet

WPJ428 Hardware Guide

Weight 0.2 kg
Dimensions 15 × 12 × 2 cm


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