Good description
Also better and more accurate than an oroborus
Theres a little more to it than that, ie. the inductance and tuning.
Do you have a VNA? I’m guessing from your “have some guy solder an antenna…” comment, that would be a no.
It woukd help, but,
I mean, you could just “give it a go” and grab something like this
But you wont know what performance and range will be until you test it