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Software Defined Radios

What is Software Defined Radio (or SDR)? Wikipedia gives a definition...

In short: an SDR is a radio with no IF, Modulator, or Demodulator stages as we generally understand those terms: a receiving RF preamp feeds directly into a (very fast) A-to-D converter, which is connected to a computer DSP/CPU to tune a signal and extract the modulated audio or data; on the transmit side, the CPU and DSP generate the modulation directly, and feed it to an RF power amp.

In the HF and ham world, it has appeared in 2 distinct phases; in use in high end amateur transceivers and receivers, and utilizing a PC as a controller, letting external software define how the SDR is addressed and utilized.

Please add any appropriate links for SDR here. The forum for this wiki can be found here

Additional Links to manufacturers, reviews, applications and more can be found on Page 2 of this wiki


Manufacturer/Distributor Links



Computer Driven

Other Receivers
eHam Reviews

Software Support

SDR Specific Applications

Other Applications That Support SDR

  • Ergo
    • Supported radios can be found here
    • The Yahoo mailing list for this software can be found here
  • Shortwave Log
    • The Yahoo group for this software can be found here; however it has its own extensive forums
    • EHam comments on this software can be found here

Online Radios


Mailing Lists

Yahoo Groups

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