I hope your little beacon will be on the air for the next few weeks, at least. I am planning a campervan trip from South Lake Tahoe, down south on US395. If my cat behaves, we will continue our journey and come shockingly close to DM16 on US395. Will have a listen out for it. Receiving the groundwave should be a cinch.
I have a Part 15 beacon in my campervan, on 13557.89 ± 10 or 20Hz. It sends the letters SPT at about 6WPM, as a tribute to my constant companion, my kitty Sprout. A very few mW to an unmatched 10-12 foot length of wire inside the fiberglass muffin top of the campervan. Not the best radiator, but I'm only doing it for fun.
Dave
AA7EE