Hi Alan,
Thx for info concerning EVFR "ground" range feature which I wasn't aware of.
The PAW audio traffic alerts (without an EVFR banner) started when I was downwind to land. These were voice alerts from the PAW only. I did receive a "siren" type alert from EVFR at this time warning me of the ATZ, plus standard text block warning, which was easily cancelled.
As I say, I had the mode S config opened out to 30,000' in PAW, but consider the alert was probably from the RV taxying to the hold. I was just surprised to get the alerts without banner text confirmation in this case, no matter what the source of the alert.
Early days, will have to try to do more flying!
Thx,
Chris