Posts tagged ‘SDR’

Multiband SDR with remote receivers

In past I assembled small SDR receiver based on Raspberry Pi and SDR USB dongle based on software developed by PA3FWM. The problem was with limited usability by multiple clients connected to the Raspberry pi at the same time. The old SDR was retired and put aside for few years.

Then András Retzler ha7ilm developed (and stopped developing) OpenWebRx, which was the base for now regulry maintained and further developed OpenWebRx.de.

I recently built homelab server based on “proper” server infrastructure with plenty of RAM and lots of processing cores. I decided to setup OpenWebRx in one linux virtual machine with raspberry pi only as remote receivers serving single user (server itself).

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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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