Software Defined Radios

From The RadioReference Wiki

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

Manufacturer/Distributor Links



Computer Driven

  • NASWA Review of the Perseus
  • N9EWO Perseus Review
  • An additional review of the Perseus can be found in the September 2009 MT article by Larry Van Horn, 'Perseus Software Defined Radio - A Whole Universe of Listening Possibilities' pp.66-68
Other Receivers

Software Support

  • Ergo
    • Supported radios can be found here
    • The Yahoo mailing list for this software can be found here
  • Ham Radio Deluxe
    • Extensive list of supported radios here.
    • Comments on EHam about Ham Radio Deluxe can be found here
    • The Ham Radio Deluxe support forums 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