How can one build/buy such an antenna? And how does it compare on VHF to for example - turnstile built only for VHF?
Besides somewhat large surface area, does it have any significant drawbacks? Not gonna lie the ability to cover both UHF and VHF with one antenna is awesome.
EDIT: I see that there are some papers describing the geometry of arms for such antenna: https://www.osti.gov/pages/servlets/purl/1526229
So as I understand I would need to generate shape for one arm of such antenna, then have someone mill it on CNC machine (out of what metal composition?)