If you want to build a clone of the sdr-kits *Testboard*,
and have no experience with the *2.54 mm round Female Pin Header Socket*,
here a link to a cheap source:
$ 1.33 for 5 x 40 pin sockets
You can use those *pin sockets*
also as *pin headers*, and also as a *carrier for parts to measure*,
either by plugging in, or soldered.
So, they are very universal to use.
A good explanation for a 68 pF capacitor measurement with the nanoVNA:
/g/nanovna-users/message/386573, Rudi DL5FA
