This is true, "for all practical purposes". These antennas, stick antennas, broadcast from the antenna out, but not from the tip... well, not really. There is something there, but it is basically unusable. There are antennas that send out signals in a directional fashion, like a flashlight, but these are dishes, corner reflectors, and so on, but they also consist of a 'stick antenna' that is arranged in such a fashion that all the signal is focused out in one direction with very little going out what are called 'side lobes'.

So, the DX7 or other 2.4 Gig antennas, are measured in what is called wavelengths, or the length of the radio wave in the atmosphere. The lower the frequency, the longer the antenna, as 72 MHz uses about a three foot long antenna, where the 2.4 GHz antenna is much shorter. For practical purposes, these antennas work in fractions of their real wavelength, usuall divisible by two.. ie, half wave, quarter wave, and so on. Most use quarter wave antennas.

Anyway, that's more than you asked for, but I thought it would be helpful to understand what is going on. See the crude diagrams below to sort of describe what's going on with antennas. Note, that the first one is a 2.4 Gig setup with the flex point and the antenna rotated to point up. The other is as if you were looking down from above the antenna at the tip.. where all of the signal goes out in circular form from the center. The first picture does the same, so picture those lines going out all around the vertical antenna such as the second photo showsJeech...

Jeech.. [sm=bananahead.gif]