Just came back from my wide open parking lot at my Church with the Sirio 5000 and the new mag mount, I have my Anytone 5555 set for 60 channel banks with channel 1 being 26.965 and channel 60 being 27.565 on the band that I use. I calibrated both my old meter and new meter on channel 30 then did the channel 1 and channel 60 reading. Both meters read the same 1.2 on channel 1 and 1.2 on channel 60 with channel 30 being almost flat it just wiggled the meter with 55 watts going out the antenna on AM. So as far as I am concerned there sure isn't any issue with the antenna or the mount and if I did talk over 50 air miles ground wave on SSB probably doing about 30 to 35 watts I would guess to say the Sirio is doing it's job. Now to catch some skip one of these days.
looks great. id say its working. my mim i va has those ribs too along roof. it measures
close too 6 inches apart from each other . im not sure that mount would fit my van