Hello,

Would like to compare link budget between
portable-radio with typical small rubber whip antenna and
vehicular-radio with 1/4-wave or 5/8 antenna or vertical dipole on the
roof

Gain difference between vertical ground plane and dipole is about 2dB.

What I'm looking for is the gain difference between

portable whip
1/4-wave on car roof
5/8 on car roof
Vertical dipole

Does anybody have more info?

Thanks in advance

Pierre
ON7CIP