I have a magnetic mount CB antenna that I just place on the roof when I need it. No holes to drill or permanent mounting I just place it on the roof when needed. The wire goes out the rear door with no problems. Otherwise It's in the vehicle or I just take the whole CB and antenna out until I need it again. Antenna was around $20 at the auto store (Auto Zone).
Good write ups by others, if you search for it,
Bumper mounts, tailight mounts, roof mounts,
Myself, I have 4' antenae mounted to my roof basket with line going through opening just behind tailgate on the top.
Can't help with pics or links as am on my cellphone.