Top Softrock V6.1 80M/40M SSB/CW TCVR(Ready for assembly), Bottom assembled Softrock Lite V6.2 RX 30M and 20M. (June, 16, 2007)
SDR Construction.
SDR(Software Defined Radio) is the convergence of recent emerging technologies where Radio
Communication modulation, and de-modulation techniques are defined in software, using DSP(Digital
Signal processing) methods. In its simplest form SDR uses a PC soundcard to process signals using
DSP from/to a Tayloe detector/modulator. The out-board Tayloe circuit is nothing more than a
hand-full of digital, as well as analogue components, which are used to up-convert/down-convert
from AF signals to RF signals, and from RF signals to AF signals. The result of the two working
together produces a power-ful SDR RX or TX which matches the best conventional Direct Conversion or
Superhet Radios.
SDR Projects
At the moment I am looking at the SoftRock line of SDR radios for projects. I am considering
using SDR principles, combined with DDS(Direct Digital Synthesis) to construct a multi-band HF RX.
