Martin i'd buy from eleshop.eu or eleshop.nl (eu shows prices wo VAT) - eleshop is authorized reseller.
I'd also get a litevna64, if you need to play with freq's over 300MHz
https://www.eleshop.nl/litevna-64.htmlOr you could start with a H4' , if Freq under 300MHz - But "Murphy" says in 2 weeks you want to check your 433MHz or WiFi antenna ....
https://www.eleshop.nl/nanovna-h4.htmlBut if you go cheap (H4) - Then once you grow out of your H4' , and get a litevna64
You can reprogram the H4 as a TinyPFA , and play w. phase analysis of Xtals or GPSDO's
Don't get the NanovnaH - The F072 MCU is too weak.
I have a H4, a litevna64 , a V2Plus4 - But usually reach for the litevna64.
I also have the TinySA Ultra - Cute little tool at the right price.
Ps: The litevna64 battery draining issue that i have, should be fixed in the newer verions.
/Bingo