Majority of time the Winegard Batwing crank up antenna is the BEST RV antenna for OTA signals.
On occasion due to distance to TV Transponder Tower we could only get a couple of channels ------so I bought a simple array antenna at ACE Hardware. ($30)
Mounted it on a 5' piece of pipe and then would stick in a couple of 'flag pole' mounts on ladder. Hookup coax cable to 'cable' connection on rear of FW
Would then be able to pickup 12 or more channels.
When NOT needed I just placed it in basement compartment.
After we stopped FTng I took that same antenna and now use it for TV in S&B.
Pulls in 25+ channels.