I got rid of all my old analog TV back in 2009 when the changeover occurred...
They went straight to the King George dump here haha...
Went to WALMART and got a couple of there VIZIO flatscreens... Never got to use my free digital conversion box....
I have found the same old crank up BATWING antenna that has the dipoles are about as good as they get for picking up OTA local town HDTV signals...
The Antenna has the dipoles like you see in this photo. The earlier BATWING antennas didn't have the dipoles...
Since we camp mostly OFF-ROAD we use our BATWING alot on the camping trips... Does a great job... This antenna shown is pointing to the transmitter site to the right
LOWES had everything we needed to fill in our large hole...
If you are going to use one of those swing out adapters be sure you have a good back board. Using small screws on the thin RV walls will pull out out on your rather easy...
You may have to put a 3/4-inch back board to spread out the weight something like this google image to be safe...
Roy Ken