dr1driver said: <<snip>> ...must be displayed on the antenna (AMA required). <<snip>>
I missed that, must have been introduced recently. Can you post the code section, so I don't have to read through that god-awful document again, searching for it?
One of the guys still has the old colored flags on his pre-'91 gold Futaba, apparently too cheap to spring for a DuBro antenna marker. The numbers are correct.
Another even older member came to the field with markers 5 and 1 slid over his antenna, the kind that aren't stuck together. He took the pin for #51 and clipped to his antenna and flew, and I observed the scanner light up channel #15. I told him about it and he seemed surprised, and slid the markers off his antenna & reversed them.
One nice thing about #44, you can't reverse the markers.
Good luck,
Dave Olson