
217Experiment 13: Going Further with Radio
of software-defined radios (I once built one, it worked, and the instructions
were thorough), available at www.softrock.com, and I have seen several
promising kits from QRP Labs (which I have not tried). Many of these use
the quadrature sampling detector design. These are more advanced than
the projects in this book and require soldering. Several of the projects are
transceivers for the amateur bands and require an amateur license to
operate, but there are receive-only options too.
I want to give one final piece of advice: Do not make it too complicated from
the start by trying to get all possible featur ...