How, or on what do you plan to use this antenna, HT, mobile, or fixed? For an HT, you can count on any sort of 'gain' antenna being very inconvenient, not easily carried around. Most of that 'gain' thingy is advertisement for an HT's antenna. Or what is it being compared to to have any 'gain', you know?
There are several mobile antennas that can provide gain. Most of them are some sort of vertical array type thingy, and fairly long/tall. Or at least more than about 30 something inches long.
A fixed/base antenna? Good grief, there's a bunch of them! Pick the one that 'grabs' you.
I have preferences as to brand, 'size', etc, in all three of those categories. They aren't the 'best', or have the highest gain, but they work just fine in my particular circumstances. I've used quite a few over the years with higher advertised gain but seem to come back to the ones I have now, for several different reasons. Most of those reasons have to do with 'size', some sizes are just not so practical in certain instances.
Good luck.
- 'Doc
