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hardware_vhf7w
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hardware_vhf7w [2019/04/15 23:31] sq3plx |
hardware_vhf7w [2021/05/16 00:57] sq3plx |
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| + | <color red>**[Update 15 May 2021]**</color> | ||
| + | **ULARI Transceiver VHF 7W** device was discontinued because the manufacturer of Linux-based boards for these devices (NanoPi Duo modules) stopped manufacturing them without any earlier notice. Please check out my [[hardware_vhf7w_duo2|ULARI Transceiver VHF 7W Duo2]] for direct replacement with the same functionality. | ||
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| ====== ULARI Transceiver VHF 7W Hardware ====== | ====== ULARI Transceiver VHF 7W Hardware ====== | ||
| - | Still working on this... | + | ULARI Transceiver VHF 7W is based on NanoPi Duo 256 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 Radio Interface photos === | ||
| + | |||
| + | {{:ulari_vhf7w_01.jpg?300|ULARI Transceiver VHF 7W front view}} | ||
| + | {{:ulari_vhf7w_02.jpg?300|ULARI RTransceiver VHF 7W rear view}} | ||
| + | {{:ulari_vhf7w_03.jpg?300|ULARI Transceiver VHF 7W PCB view}} | ||
| + | {{:nanopiduo.jpg?200|ULARI Transceiver VHF 7W NanoPi Duo module}} | ||
| + | |||
| + | === NanoPi Duo pinout === | ||
| + | |||
| + | NanoPi Duo pinout diagram with with description of used pins. | ||
| + | |||
| + | {{:nano_pinout.jpg?|NanoPi Duo 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. | ||
hardware_vhf7w.txt · Last modified: 2021/05/16 00:57 by sq3plx
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