Archive for the ‘APRS’ Category.

Add weather report from local weather station to APRS node

I recently set up a APRS gateway. Check instructions in older posts. In the script pymultimonaprs you can set weather when set in a json-file. eg: “weather”: “/path/to/weather.json”. I live next to the automated weather station for our city. Instead of building own WX I decided to use the data from this nearby station. The data is provided in XML from our national agency ARSO. The data is available for some major cities in Europe, too.

Main idea was to prepare PHP script to parse the XML data and prepare text file, which is acceptable for pymultimonaprs. Next step is to wget this text from some server and copy it to the raspberry pi with cron job.

This page will give you an example how to:

  • parse XML file with weather data using PHP script
  • output the text for pymultimonaprs weather file
  • prepare cron job with raspberry pi

m117

 

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Raspberry Pi + RTL SDR dongle = APRS Rx only gate (Part Two – Decoder)

This is part two (here is part one) of the tutorial how to use Raspberry-Pi in APRS gateway.

rpi

In part one I explain how to install OS for Raspberry Pi and get RTL dongle up and running, which enables radio reception and listening received signal with FM demodulator on audio jack (simple FM receiver).  For next steps you will need HAM licence with own call sign. Mine is S54MTB.

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Raspberry Pi + RTL SDR dongle = APRS Rx only gate (Part one – FM Radio)

rtl

Introduction

I have couple of raspberry pi’s laying around doing nothing useful. I decided it’s time to use it better than dust collectors. This tutorial is placed here for reference for any OM who would like to setup APRS Rx only node based on R.pi. Here’s what you’ll need (hardware):

… and software:

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