Total posts : 45366
These antennas seem to be 1/4 wave long so the length is determined by the operating frequency. I was just wondering if it would operate if it was a fraction of a wave length such as the typical AM antenna, and if so if there would be any advantage.
Maybe someone has tried it and will comment.
If it is not worth pursuing technically, then I am not going to pursue the legality.
You comment about the loop antenna is interesting. I have used one abut 3 feet square for receiving, but not for transmitting. They are directional and that could be an advantage in some situations.
Actually, I though about making such an antenna for Part 15 use. Can you imagine the size/diameter of the muffler pipe for that frequency? LOL!!