The Acorn II SDR Receiver is an upgraded version by Paul Darlington m0xpd, of the earlier “G0NQE-Acorn SDR receiver”. The original design created for a Pontefract Radio Club project, and was built by a large number of the club members in February 2011. It was a great success then, and still continues to be. Then the original kit covered 2 switched sections of the 80m phone band.
The Acorn II offers a 40m receiver kit, with two options of frequency control – Crystals or External Frequency Control using the “m0xpd Si5351A Arduino Shield”, this kit is also available from Kanga Products.
Provision is available on the PCB to add your own switchable Bandpass Filters, enabling the constructor to create a multiband SDR receiver.