====== ULARI Transceiver VHF 7W Duo2 Hardware ======

[[http://microsat.com.pl/product_info.php?products_id=181|ULARI Transceiver VHF 7W Duo2]] is based on NanoPi Duo2 512 MB module from FriendlyARM. The device consists of a microprocessor module and a motherboard with all necessary external components including VHF transceiver, hybrid power amplifier, 7-pole low-pass filter. The whole system includes::

  * **SMA VHF antenna connector**,
  * A 100 Mbit Ethernet connector with surge protectors,
  * Two USB connectors with surge protectors, 5V/1A total current consumption (suitable for moderm LTE modems),
  * Wifi chip with external antenna,
  * RS-232 serial port (via 6-pin minidin connector),
  * DS18B20 thermometer connector,
  * Four leds informing about device operation,
  * SD CARD connector for operating system image.

>This device is a standalone VHF tranceiver. All you need to do is to connect a proper VHF antenna and you can send and receive RF signals from VHF band.

=== Technical parameters ===

  * Dimensions (without connectors): 100x94x32mm,
  * Weight: 280g
  * Housing material: aluminium, PCB panels,

  * RX frequency: 136-174 MHz,
  * TX frequency: 136-174 MHz,
  * TX power: 3-7 W,
  * Low-pass filter: 7-pole,

  * VHF antenna connector: SMA female,
  * Wifi connector: SMA female (antenna included),
  * Power connector: round 5.5/2.1mm (with plus at center),
  * Thermometer connector: terminal with screws,
  * Serial port connector: minidin 6-pin female (1 serial port),

  * Supply voltage: 12-14 VDC,
  * Power consumption (at 12V): TO-BE-MEASURED

=== ULARI Transceiver VHF 7W Duo2 photos ===

{{:ulari_vhf7w_01.jpg?300|ULARI Transceiver VHF 7W Duo2 front view}}
{{:ulari_vhf7w_03.jpg?300|ULARI RTransceiver VHF 7W Duo2 rear view}}
{{wiki:ulari_vhf7w_duo2_01.jpg?300|ULARI Transceiver VHF 7W Duo2 PCB view}}
{{:nanopiduo2_01.jpg?200|ULARI Transceiver VHF 7W NanoPi Duo2 module}}

=== NanoPi Duo2 pinout ===

NanoPi Duo2 pinout diagram with with description of used pins.

{{:nanopiduo2_02.jpg?|NanoPi Duo2 pinout diagram}}

=== Rear panel RS-232 port pinout ===

RS-232 port can be used to connect any serial port devices with RS-232 voltage levels. Devices with low current consumption can also be powered from this connector. [[http://microsat.com.pl/product_info.php?cPath=29&products_id=171|GPS-RS232/Microsat/2]] is compatible and works nice.

{{:minidin.png?|Minidin 6 pinout}}

  * Pin 1 – 5V output, do not short-circuit, max. current 100mA,
  * Pin 2 – GND,
  * Pin 3 – hard-wired to negative voltage for WS-2300/WS-2350 weather station support,
  * Pin 4 – RS-232 Port 2 TXD,
  * Pin 5 – RS-232 Port 2 RXD,
  * Pin 6 – not used.