On Fri, Feb 7, 2025 at 02:07 PM, Roger Need wrote:
How good are those SMA to PL259 and SMA to SO239 connectors that are popular
with some NanoVNA users?
Above HF/VHF anything with a "UHF" connector involved is going to exhibit increasingly poor performance. In addition nobody that I know of makes a good-quality UHF calibration kit so you will have to use adapters which degrade the calibration.
I have purged all of them from my station in favor of type N, which is good beyond 12GHz, high quality ones beyond 18GHz. I use N, BNC, SMA, and reserve type F for RX-only use.
73, Don N2VGU
Donald S Brant Jr