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# HF WSPR stand-alone Receiver
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OpenWSPR receiver is a stand-alone HF receiver for [WSPR](https://en.wikipedia.org/wiki/WSPR_(amateur_radio_software)). Just connect an antenna, internet and a DC power supply and you're ready to go! With this tiny receiver you can decode and relay WSPR messages to [WSPRnet.org](https://en.wikipedia.org/wiki/WSPR_(amateur_radio_software)). Since the entire project is open source, receivers can be easily reprogrammed to receive signals other than WSPR. The nanoPi board inside runs Armbian OS and several user programs, which are automated by custom scripts, making the receiver completely maintenace-free.
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- Basic configuration is loaded from a plain-text configuration file from an external USB stick, through which where you can easily set-up your callsign, locator, frequency and other parameters
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- Advanced settings can be accessed through SSH
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## Basic Parametrs
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- HF bands: **0.1 - 50** MHz
- Power supply (microUSB): **5 V** / **300 mA** typical
- Antenna conection: SMA (RF input)
- Internet: LAN - RJ45
- USB host: USB A
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- Two signalization LEDs (STATUS and Sucessful decode message signalization)
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- Aluminum case with a heat sink
- NanoPi Neo
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## Block diagram
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![BLOCK SCHEMATIC](img/WSPR-RX.png)

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## Schematic openWSPR HF Receiver shield
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![SCHEMATIC](img/SCH.png)

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## Project photos
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![Picture 1](img/01.jpg)
![Picture 2](img/02.jpg)
![Picture 3](img/03.jpg)
![Picture 4](img/04.jpg)