Airspan AirUnity 545

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Airspan AirUnity 545 eNB25 (B41HL)

FCC approval date: 14 February 2017

Type: 4G LTE router, LTE modem

Power: 12 VDC, 3.5 A
Connector type: barrel

CPU1: Freescale (NXP) i.MX6SX (792 MHz)
CPU2: Qualcomm FSM9916
FLA1: 4 GiB 4,096 MiB <br />4,294,967,296 B <br />33,554,432 Kib <br />4,194,304 KiB <br />32,768 Mib <br /> (Kingston EMMC04G-M627)
FLA2: 4 GiB 4,096 MiB <br />4,294,967,296 B <br />33,554,432 Kib <br />4,194,304 KiB <br />32,768 Mib <br /> (SanDisk SDIN7DP2-4G)
RAM1: 1 GiB 1,024 MiB <br />1,073,741,824 B <br />8,388,608 Kib <br />1,048,576 KiB <br />8,192 Mib <br /> (Samsung K4B4G1646D-BYK0 × 2)
RAM2: 2 GiB 2,048 MiB <br />2,147,483,648 B <br />16,777,216 Kib <br />2,097,152 KiB <br />16,384 Mib <br /> (Samsung K4B4G1646D-BYK0 × 4)

Expansion IFs: Mini PCIe, USB 2.0
Mini PCIe slots: 2
USB ports: 3

WI1 module: Qualcomm Atheros QCNFA344A
WI1 module IF: Mini PCIe (NGFF)
WI1 chip1: Qualcomm Atheros QCA6174A
WI1 802dot11 protocols: abgn+ac
WI1 MIMO config: 2x2:2
WI1 antenna connector: MHF4
WI2 module: SerComm Ninja LTE Module (LC4R-T)
WI2 module IF: Mini PCIe (USB 2.0/UART)
WI2 chip1: GCT Semiconductor GDM7243Q
WI2 802dot11 protocols: cellular
WI2 antenna connector: SMA

ETH chip1: Qualcomm Atheros AR8033
ETH chip2: Qualcomm Atheros AR8033
Switch: Freescale (NXP) i.MX6SX
LAN speed: 1GbE
LAN ports: 2


Additional chips
PLIC;Altera;51M60Z;E64C5N, N CADA6, 1725A;1;

Stock bootloader: U-Boot Secure Boot

Stock FW OS: Linux 4.1.15 airunity

Flags: LTE Cat.6, femtocell, SIM Card slot

Default IP address:
the IP is used by 1248 additional devices
of which 0 are Airspan devices

802dot11 OUI: 28:56:5A
Ethernet OUI: 00:A0:0A

For a list of all currently documented Freescale (NXP) SoC's with specifications, see Freescale.
For a list of all currently documented GCT chipsets with specifications, see GCT.
For a list of all currently documented Qualcomm chipsets with specifications, see Qualcomm.
For a list of all currently documented Qualcomm Atheros (QCA) chipsets with specifications, see Qualcomm Atheros.

LTE Mobile Digital Station

  • AirUnity 545 (Sprint Magic Box)
  • AirUnity 546 (B41HL), BH (B41HL, B25) • FCC Label
CPU: NXP (Freescale) MCIMX6X2EVN10AB @792MHz
WLAN: Qualcomm Atheros QCNFA344A NGFF M.2
FCC ID: PPD-QCNFA344A (05/01/2015)
P/N: Hon Hai (Foxconn) T77H644.01


  • Device includes two distinct boards within. Primary board used for system
control and carrier traffic relaying drivin by the LC4R-T modem.
  • Second board is dedicated to Femtocell operation. Boards are connected using a 14 pin
ribbon connector for 12v power along with a STP RJ45 cable for network access.
  • SSDP packets generated from the relay board for controlling the femtocell board.
  • System contains tamper detection circuitry. It appears booting the relay board
disconnected from the display and femtocell board will set it off.
Also booting the unit with the case open will set it off.


  • Relay Board: U-Boot console disabled.
3.3v TTL UART located on right hand side (back PCB facing)
Pin1 (RX) - Pin2 (TX) - Pin3 (GND)
115200 Baud
  • Femtocell Board:
RS232 port is connected to TTL UART with active voltage levels and no console output.
UART running at 1.8V stepped up to 3.3V prior to the RS232 controller.

Solder points exist for a second RS232 controller however no components have been placed.