Let's see what I have for antennas.....
First: Cockpit, I put in a RIG-RUNNER power pole strip, it powers many things including my GPS, the Dorian Pressure Pro, two CB's a dual band Hm rig, a fan and my Engel freezer. Spare power pole pairs do exist on the strip.
The antenna for the ham radios is mounted on the mirror, arm (Velmac Mirrors) I do not recommend a 3/8" snap in (though that is what I used) A PL-259 feed through would have been a better choice here.
Main radio room (AKA Front head) sits on the main 12 volt distribution panel (It is accessed for fuse replacement from the hall, but for connections from under the restroom sink) the TS-2000 sits atop the counter, about 6 inches avove same on a custom built plywood box.
Power runs directly off the main house fuse block No power poles here. Coax down through the floor to the KAT-1 on the back of the rig for HF (The KAT-1 is a marine grade auto tuner, Designed to be out in the wet-her and does not mind the rain a bit. This in turn feeds an assortment of antennas depending on where, (And if) I'm parked.. My favorite is a 100' long wire, currently tossed over tree limbs. I also have a 16 foot support pole for it I can use if I wish. (Guyed support)
It also feeds the "Goat rail" on the roof (1/2 inch copper tube, about 30', plus a CB whip at the front (90 degrees to the pipe) and a few feet of #1 wire to connect it to the KAT, overall about 40 feet electrical, works very poorly but work it does)
and my Four Band Trap Verticle (KAT can be bypassed on 40 even though I trashed the capacity hat, Needed on other bnds)
Six meters is a quarter wave on the back
2 meters is a "J" pole on the back
70 cm went through the roof (PL-259 mount, They are long enough to make that trip if you get the right feed-through) it comes down in a wall, completely hidden.
For all bands there is a vent, like a stove vent, in the bathroom wall, I "Nailed" (Screwed) the flapper closed and put PL-259 feed through (Bulkhead) fittings in it, half a dozen. These connect to switches in the radio room.. One for 70cm, One for 2 and two for six and HF (THey both use the same antenna connectors on the TS-2000) These can be used with "Alternative" antennas. For VHF/UHF I have a Flagpole either 20 or 25 feet (I'm thinking 20) with a park-0n base, the back tires are right there behind the restroom so I put the pole there. A wood platform replaces the "Final" on top of the pole, it can hold a 2-meter "T" pole (Think two j-poles phased) a 70cm T pole and a six meter dipole, all 3 can be mounted either verticle or horozontally.
It can also support the center of assorted dipoles.
Futeure expnsion includes dipoles for 10, 16 and 20 which I'll hide inside another "Goat rail" on the other side of the RV finishing the rail on the roof, All rails will be painted black, Just PVC on the curb side, Copper on the driver's side.
I'm hoping the dipoles outperform the "long pipe"