Tag Archives: SDR

Configuring Hermes Lite 2 SDR, Quisk, Direwolf and Hamlib

Posted on March 23, 2020 by Steve Netting OH3SPN

After multiple failed attempts to trigger Quisk PTT via CAT on a virtual serial port, I discovered later Direwolf versions include support for Hamlib. This itself was also not straightforward as by default, Direwolf is not compiled with Hamlib support. … Continue reading →

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70W HF Linear Amplifier Project

Posted on February 1, 2020 by Steve Netting OH3SPN

Whilst very happy with the performance of the Hermes SDR, I’ve been considering a matching HF linear to provide a moderate (6-9dB) increase in output power. I have ideas about operating portable using battery power; ~50W seems a nice balance … Continue reading →

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Hermes Lite 2 SDR Transceiver

Posted on January 8, 2020 by Steve Netting OH3SPN

The Hermes-Lite is a low-cost direct down/up conversion software defined amateur radio HF transceiver based on a broadband modem chip and the Hermes SDR project. It is entirely open source and open hardware, including the tools used for design and fabrication files. Over … Continue reading →

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Adventures with Software Defined Radio

Posted on May 29, 2016 by Steve Netting OH3SPN

Some time ago I purchased an RTL ‘TV’ USB tuner. I was immediately impressed by the way whole chunks of the RF spectrum are visualised; tuning as simple as clicking a signal of interest plus ‘brick wall’ filters by the drag … Continue reading →

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