As it happens.. I do that...
First what antenna do you have. Options include the "Jack" from King Controls and assorted Winegard models
Sensar II or III (The good old "Batwing"
Above with the addition of the WINGMAN (If you do not have, this is mod #1)
Sensar IV (already has Wingman)
Roadstar (junk)
Rayzer (Not sure on this one but ... The engineer in my says not that great)
OTHER makes
With out knowing a lot more about the "others" the Winegard Sensar IV or the II or III with added wingman, are the BEST RV TV antennas current market
Now what is inside the RV Two choices
1: A wall plate. it has a switch, and LED, a 12 volt outlet and an antenna jack
2: A Matrix Switch (box of many buttons or BOMB)
If you have the wall plate.. Then the Winegard SENSAR PRO is for you.. Simply replace the wall plate.. NOTE.. The Sensar Pro does not have a front antenna connection, cables come out the rear, You can however "notch" the wall or box it mounts in so you bring the TV-1 Cable out to the front and connect.
If you have the BOMB
Get a standard outlet box and the SENSAR pro.. You will need to tap into the 12 volt leads to the BOMB, unhook the ANT lead from the BOMB and attach to teh ANT lead on the Sensar Pro (Which you will mount in the outlet box) Using a coax jumper (RG-59 or RG-6, I really like RG-6) connect the TV-1 out from the Sensar Pro to the BOMB's ANT jack..
The Sensar pro is a 2nd Pre-amp, adjustable... Plus a scanner, Plus a signal meter, and a few other functions Really makes peaking the signal easy.