Arrgh! I confused this thread with a recent one asking about UHF TV
antennas. My response wasn't at all appropriate to this discussion.

I agree completely with Richard Harrison, a quadrifilar helix is
probably a good choice for this application.

I sincerely apologize to Richard and other readers for my carelessness
and mistake.

Roy Lewallen, W7EL

Roy Lewallen wrote:

Because one of the very important functions of a TV antenna is to reduce
multi-path interference causing fading and ghosting, directionality is
essential. The quadrifilar helix I'm familiar with is a normal-mode
helix; that is, the maximum radiation or reception is broadside to the
helix, and it has an omnidirectional horizontal pattern when the axis is
vertical. That would be a poor choice for a TV antenna. . .