Your R&D efforts continue to amaze and impress, Brian! Mesh over the transducer may indeed inhibit water droplet attachment. However, that’s actually a much less common issue than the main issue with rain, which is rain drops settling on the reflective plate. Any object in the path between transducers will affect the reading. Normally, rain is blown off quickly and it’s a non-issue. Occasionally, raindrops form a puddle on the plate and, in calm conditions, stays put.
Fortunately, this is something that’s pretty straightforward to identify and handle in firmware. The increase in reports of this issue after the release of v94 lead me to suspect we may have inadvertently caused this issue to become more prevalent. We’ll dig into the data this week and see what it says…
That is one way the issue presents itself, indeed. We’ll look at your data and hopefully it will tell us what’s going on.