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Building a Ham Transceiver with an RTL-SDR, Raspberry Pi and Rpitx

November 4, 2015

A few days ago we posted about RpiTx, a piece of software that allows you to turn your Raspberry Pi into a multi purpose transmitter by modulating the output on one of the GPIO pins.

Now over on YouTube user HA7ILM has uploaded a video showing his related software qtcsdr. Qtcsdr runs on the Raspberry Pi and interfaces with an RTL-SDR dongle and RpiTx to create a simple transceiver radio. In the video HA7ILM shows the software in action by using a microphone and RTL-SDR plugged into the Raspberry Pi, and showing the microphone transmitting via RpiTx and being received via the RTL-SDR.

Qtcsdr can be downloaded from https://github.com/ha7ilm/qtcsdr.

As always with this type of thing only transmit if you are licensed and take care with the transmitted distance and filter the antenna output when transmitting over a distance that is further than your room. Also regarding this, on the qtcsdr GitHub page the author mentions that a Raspberry Pi shield called the QRPi filter + amplifier is currently in development (white paper).

QTCSDR Control GUIQTCSDR Control GUI

Building a Ham Transceiver with an RTL-SDR, Raspberry Pi and Rpitx

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Building a Ham Transceiver with an RTL-SDR, Raspberry Pi and Rpitx

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