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Dec 18, 2020
Category: General
Posted by: lex

Got my QCXmini kit from QRPLabs and finished it. So I added a complete building report (incl designs for the tilt-feet) on this page

Nov 19, 2020
Category: General
Posted by: lex

A few owners of the new NanoVNA H4 have requested me if I could re-design the PCB so male SMA edge connectors can be used to directly connect the adapter PCB to the NanoVNA H4.  For a while I holded it off, but recently I got my hands on a used NanoVNA H4 which I'm very happy with because of the bigger screen (yes my eyes aren't getting better). I started to use the H4 and wanted a dedicated adapter for it. So I measured  my NanoVNA H4 and it has a distance of  39.5mm and comments from other OM's indicate that it's quite constant +- 0.1mm. 

So I made a copy of the original design and changed the board layout to fit our needs. 

continue reading

Oct 23, 2020
Category: General
Posted by: lex

I have added 2 pages to the Tools and parts section of this website. 
A rebuild of the K7QO noise generator and a new Dual tone audio oscillator


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