By how much? Why?


I would assume the direct connection with the roof
metal. I tried this one time, after trashing a larson
magmount with about 84 knocks off the car...
When I converted it over to a hole mount, with the
usual NMO, there was a good bit of difference. I didn't
measure, as the mag mount was toast, but it was quite
large actually. Like maybe a change for say S9 on a
machine, to maybe 15-20 over S9. Very noticable in my
case using the larson 5/8 antenna on top of a car roof.
Was like a different antenna..
MK