Lora@VSB TTN Gateway Assemble

For the LoRa@VSB gateway we use following components:

  • Raspberry-Pi 2 Model B

We use the Raspberry Pi 2 Model B as we mainly use only the cable Ethernet connection. The Raspberry Pi is maximally compatible with iC880 Concentrator.

We plan in the second generation use the industrial version – Raspberry Pi Compute Module. The main advantage of Raspberry Pi CM (the BCM2835 processor and 512Mbyte of RAM) is a 4Gbyte eMMC Flash device (which is the equivalent of the SD card in the Pi).

 

 

 

  • iC880A – LoRaWAN® Concentrator 868MHz

iC880A is able to receive packets of different end devices send with different spreading factors on up to 8 channels in parallel. Due to the fact that the combination of spreading factors and signal bandwidths results in different data rates the use of “Dynamic Data-Rate Adaption® becomes possible. That means that LoRa® nodes with high distances from the concentrator must use higher spreading factors and therefore have a lower data rate. LoRa® nodes which are closer to the concentrator can use lower spreading factors and therefore can increase their data rate. This allows to build easy to handle star or multiple star networks without the need of routers or repeaters. In combination with an embedded Linux board like Raspberry Pi and the HAL software from https://github.com/Lora-net a complete LoRaWAN® gateway can be setup easily

 

  • Waterproof cabinet SKYBOX MB2520D140 with IP65

    – simple full door cabinet with dimmension 200 x 250 x 140 mm
    – the symmetrical construction allows simply turning the cabinet changing the door hinge from the right or left
    – powder coating RAL 7034
    – the cabinet has simple lock, if needed the FAB lock can be ordered (Part No. SEZMB-FAB-KEY)
    – Degree of protection: IP65

 

 

 

  • 12 or 24V/1A DC adapter

    Our gateway is defended by passive POE system. We use 230V  to 12 V/1 A or 24 V/1 A source adapter.

 

 

 

 

  • DC-2-DC Step-Down converter

    – LM2596 DC-DC
    – Input voltage: 3 V ~ 53 V
    – Output voltage: 5 V ~ 35 V
    – Output current: 3 A (max)
    – Transform efficiency: 92 % (highest)

 

 

 

 

  • Ubiquiti OverVoltage protection

    Overvoltage protection will guarantee the operation of the connected device even at overvoltage of 100 V for 1 s or 1 kV / 1us discharge if the ground is properly grounded. Overvoltage protection supports PoE up to 50 V. Suitable use for 10/100/1000 Mbps networks.

 

 

 

 

 

  • Lightning Arrester SMA(m)-SMA(f)

 

 

 

 

 

 

 

  • U.FL(f)-SMA(f)panel. LP-088. 10cm

 

 

 

 

 

 

  • Collinear vertical antennas A10-868

    Model A10-868
    Operating frequency band, MHz 864-876
    Gain,dBi 10
    VSWR, not more than 1.3
    Polarization vertical
    Max. power input, W 50
    H-plane beamwidth 360В°
    E-plane beamwidth 15В°
    Impedance, Ohm 50

    Mechanical specifications:

    Model A10-868
    Length, mm 1570
    Weight, kg 0.75
    Rated wind velocity, m/s 40
    Diameter of radome, mm 30
    Radome white fiberglass
    Mounting On a mast 25-55 mm
    Connector N-female

  • An antenna holder (1 000 mm)

 

 

 

 

 

 

The final state: