- It seems to be accepted theory that an "omnidirectional" UHF antenna can achieve modest gain (about 2.8 dB over a dipole) by eliminating the z dimension. In other words, it doesn't radiate signal (or look for signal) from above or below, only in the horizontal plane.
- It's also common to refer to a dipole as a "bidirectional" VHF antenna, but it clearly does nothing to eliminate the z dimension.
Well, it just so happens I could use a bidirectional VHF antenna, and I don't think a simple dipole is going to cut it! Isn't it possible to make a VHF bidirectional antenna without the wasted gain from a dipole radiating in the z dimension?? I can't find anything available commercially.