Total posts : 45366
I have an active VHF/UHF receiving antenna, the UHF portion of which is a cicle (loop) of silver, broken at the bottom so each leg can be fed in a balanced fashion.
Also, there is good description of rhombic antennas in Radio Handbook, and now that you’ve pointed it out, Neil, I spot the similarity to the loop antennas we’ve been talking about.
The rhombics described in the book are specified as high frequency antennas, but the frequency chart shows a low end of 3.6 MHz, which isn’t terribly above the medium wave band.
For receiving purposes, now thinking in terms of Part 15 medium wave, loops and rhombics look like a good way to go.
If loops/rhombics of 3-meter height or length have any use for Part 15 transmission it would be worth an article in CQ Magazine.