On Sat, Jun 10, 2023 at 11:16 AM, Siegfried Jackstien wrote:

added a bluetooth module to my sark100 and can now measure "wireless" (use
smartphone to display sweeps)

A few years ago, before the nanovna, I bought the MINI60 version of the Sark.
It's very small, it sweeps the band you choose, shows the frequency of minimum SWR but you can also read each measurement of the sweep. Mine has the built-in bluetooth module, and works with my Android phone. And it IS readable in sunlight!
They currently cost around $120, though. About the price of the nanovna-h4 or -F.
It's in my Harbor Freight plastic "ammo box" case with the Nanos and an MFJ-207 analyzer. I am still glad to have it.
--
Doug, K8RFT