Hello to all,
Thanks for all your inputs, I made a few searches and I saw the devices you
told.
Actually, I just need to work up to 150MHz, I build solid state amplifiers
and I need to tune the low pass filters. I also build antenna transformers,
Baluns, Ununs and RF chokes and need to measure them.
I have a nanoVNA S-A-A-2 which is useless because it doesn't measure Rs or
Xs independently in S21 mode, only measures impedance complex. Tuning low
pass filters with this nanoVNA is also not possible because the measurements
are not accurate enough as my other VNA. I performed some comparisons and
the Transmission Loss in dB is very different, and yes I made proper
calibrations. The nanoVNA I have is just good enough to do SWR
measurements...
My goal is to have a VNA independent of the use of a computer, that's why
I'm looking for a VNA with screen bigger than 3 inches! Which model should
be the most accurate? I know all these are Chinese devices, but maybe I can
find a reliable one for my works...
Thanks, best 73
Pedro Madeira
CT7AHV/C91AHV
