Here is an example of the behind tail light mount.
If you have corner or quarter armor, I always recommend with flush LED tail lights to weld a tab behind the jeep above the tail light somewhere between the tail gate and corner to your armor. Use a piece of 3/16 or 1/4" thick steel so it is stout enough and won't bend, drill it with the appropriate diameter hole for a stud mount like what trucker CB mirror mounts use. This in lieu of the "behind the box tail light" mount method shown above. You are mimicking the tab at the top where the antenna mounts to if you can visualize it. Your mount will have the best vehicle ground possible and will be out of the way of side-swipe obstacles that could tear the antenna off the Jeep. See the style mount I am referring to below that I got off the Amazon link at the bottom of this page. This mount fits in the hole on the tab that is in the above pictured mounting bracket.
The nylon washer must be in place to insulate the stud that is connected to the center conductor of the coax cable. The SO-239 connector will accept your coax plug and screws right together. Using a quality Firestik tunable tip antenna like the FS3 or FS4 will provide excellent coverage and range. Shorter antennas will have reduced range, longer antennas will have better efficiency and range but can wag like a tail on a dog, hitting and banging into trees, spare tire racks or the Jeep top. I prefer a 3 or 4 foot model myself.
If you are a HAM or are thinking of becoming one, Use this same style of mounting for your 2Meter or multi-band VHF/UHF antenna. A slightly wider tab with a little larger hole for the typical SO-239, "N" style or NMO mount works just as well and will be super durable too. The Jeep body, roll bar or top protects your expensive HAM antenna from damage from the same side-swipe obstacles as well.
The CB I recommend that doesn't break the bank is Here:
Has 7 Watts of audio output to be loud enough to hear over highway noise, fits in tight spaces and will outperform that 75 P.O.S that all-in-one Cobra garbage.... I know, many people will hate on me but the truth is, it really isn't a very good radio for anything more than Jeep-in-front to Jeep-in-back communications short range. That's why you don't see truckers using them now do you! No bias, no spin, no BS advice. The Cobra 75 is better than nothing though and may be the only thing the misses will allow in "her" Jeep! So if you must, I'm just saying it's like Snap-On vs. well.... Harbor freight for a speed handle ratchet. Sure it works but....... Soapbox rant off......
Here are a few pictures of some of the other parts you will want to get:
A HEAVY DUTY spring, Make sure it is really a HEAVY DUTY spring cause Firestiks are substantial and need to be stiff but still bend if a tree or rock catches it and not fold down in the wind driving on the freeway. You'll know if your spring isn't up to the task.
RG-8X or RG-58U coax with connectors attached, preferably quality molded on ones that won't come loose.
A Firestik tunable tip antenna in your choice of color 2ft, 3ft or 4ft long.
Here are nice windshield frame Footman loop mounts for CB & HAM radios that will keep your CB safe from high water crossings and out from under the dash. No drill design unless your footman loop is riveted, then drill the rivets and attach with screws. Keeps the cord out of the way too with a nice retaining loop built right in.
1st is part # 13551.08 for 1997 to 2002 early windshields
This second image is for the 2002-2006 TJ/LJ windshields Part # 13551.07:
They are slightly different in design so investigate which one fits your rig especially if yours is a mid year 2002 where the windshield footman loop mount area changed. Both on Amazon from Rugged Ridge as just one example of a very neat, clean discreet way to mount your CB without all kinds of holes drilled in your dash & console.
