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 […]

Yup – It’s Another Si5351 VFO

To many, this will be just another Si5351 VFO project, with nothing to distinguish it from the others. In fact, that’s exactly what it is. The “how to” of connecting an Arduino board to an Si5351 board, wiring up a display, and loading the firmware, is straightforward, and well established. To me though, it was […]

The Manhattan Projects of Bob W3BBO

Bob W3BBO and I have been communicating via e-mail for a couple of years now, and I’ve been meaning to write this post for quite a long time. I’ve been on hiatus from home-brewing, and expect to be in the future too. The brief run of Manhattan projects I built was really fun, but I […]

Some New Tools and Construction Aids

I’ve added a few new tools and construction aids to the shack here recently and would like to pass the info on to you, in case it is of any help. The first is nothing out of the ordinary, but I’ll include it here, if for no other reason than the excellent instructions that were […]