looks like a King omni directional 'mushroom' antenna - fixed, so that you don't need to rotate it like the 'older' types you typically see on most rvs...but yes, it may not necessarily pickup the same number of channels since it is not 'directional'...
easier install, less involvement for the owner, etc...
but no, it has nothing to do with the radio - that will have it's own antenna
now, 'how many' channels you may pickup has a lot to do with 'where' you are in relationship to the stations signals, and sometimes even from TV to TV as each tv may even have differing levels of what they may be able to process from the signal...some do it better than others.
Unless you have someone parked right next to you with another rv and another type of antenna, it's hard to 'compare' whether you are receiving all the channels/signal you expect to...
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