The Elektor SDR

摘要

The Elektor Software Defined Radio with USB interface was published in May 2007. Since then it. has become one of the most widely-used SDR hardware projects. The SDR board can receive not only AM and DRM signals but also amateur radio (both SSB and CW), marine weather services, and stations from all over the world. SDR software is continuously being improved and new features added, also by members of the ham radio community all over the world.rnThe project is an ideal low-cost introduction to SDR technology. The preselector circuit described here makes a big difference to the performance of the receiver: RF preselection coupled with better antenna matching allow the radio to pick out a much greater range of stations. Furthermore, if it is not feasible or desirable to use an outdoor antenna, the preselector circuit can work as a tuned loop antenna.