Category: Software


QUCS for Filter Design

Introduction QUCS, or Quite Universal Circuit Simulator, is a freeware utility that allows you to draw circuit schematics, and perform AC & DC simulation, noise simulation (for S-parameters, and AC simulations), S-parameter simulation, and...

The main RFSim99 display, showing a multi-pole low pass filter. 30

Free RF simulation software

I’ve been using RF sim 99 (aka RFSim99) for over a decade, and it’s proved invaluable again and again during that time, and continues to do so. RFSim99 is a freeware RF simulation software utility....



The other evening, I decided it’d be a good idea to update my FT-991 with the latest firmware.Aside from this being a good idea generally, to keep up with the latest and greatest improvements...