Just back from the 25th G-QRP Mini Convention, where I disappointed the punters by presenting again. I broke up the monotony of my talk with some examples of "QRP" TV test cards and thought it would be nice to design a new one, featuring our beloved Franciscan...
My subject took the simple ideas of last year's "Occam's Microcontroller" project and stretched them to embrace Software-Defined Radio, whilst keeping it all within the Arduino family.
The idea was embodied in the SDR rig which you see below, mounted on a piece of scrap plywood from my youngest daughter's house renovation project...
This project will, henceforth, be known (with apologies) as SDRduino.
Those fortunate enough to have missed the talk can see my slides here.
The Si5351 generated quite a lot of discussion at the Convention and I promised to put up some code. There is now a version of the "RF for Superhets" code available from this Github repository. I've tested it on 40m on my modular BITX - but would appreciate any bug reports from early "beta test" users!
...-.- de m0xpd