Dave Richards AA7EE

• A Passive Tunable HF Preselector
  When I built the VE7BPO DC Receiver Mainframe recently, it wasn’t intended to end up as a final finished project. The intention was more to have it as part of an experimental platform. The little box that contains the DBM, diplexer, and AF amplifier that make up the mainframe will most likely stay largely the […]
• The VE7BPO Direct Conversion Receiver Mainframe
  This is one of those projects that has been residing in my head for a long time, as something I wanted to build. I’ve always liked direct conversion receivers. With them, as with regens, I felt that they have been underestimated by many builders and hams as being novelty items. Their apparent simplicity can also […]
• Rod KQ6F Has A New SW200 AM Processor For Sale
  Please note that the above photo is of my SW200, though Rod’s no doubt looks exactly the same.   A few months back, I received this note from Rod KQ6F – Hi Dave – I very much enjoyed your review on this product.  It was largely the reason I bought one.  My application is AM […]