As a hamradio homebrewer I often use my NanoVNA to measure filters, antennas and crystals. But a NanoVNA is much more than that, you can also measure components with it.
After a few weeks I decided to setup the dish temporary in my backyard and made some cables to wire every thing up.. The original setup had a off focus placed 4.5 turn helix which was ok, but didn't give the expected punch and the signals where a little bit weak in SSB on the QO-100. Other operators told me that the signal was readable but not that strong. So that was one thing to improve and the idea a of a new Helix feed was born.
A few months ago I ordered a ATU100 kit from China (without a case), and on a rainy weekend I decided to build it together. This ATU is equipped with a 1.3" OLEDd display and one thing I hate about these displays is that you almost can't install them without damaging the glass. Thinking about it, I decided that I need a 3D printable frame which puts all the mechanic stress on the PCB instead on the glass . . . Continue reading . . .