IF you need a little more flexible test board, take a look on SDR-Kits :
Not all software functions of the DG8SAQ software can be used, but the supplied experiments can also be done with a NANO-VNA. The Training slides needs some basic RF knowledge to follow: it is not fully "entry level". So I would recommend a look into the slides and the assembly instruction before ordering.
There is no need to go to high frequencies (>100MHz) to understand the functionality of an VNA. The standard measurement functions and limitations get already visible on the lower frequencies.
vy73 de Karsten, DD1KT
