DIY for CBers.
CB antenna tuning for beginners. You can get the same super low SWRs with the right antenna for the vehicle, proper antenna placement, properly grounding the antenna mount, and a quality coax.
My preference is the tallest, fiberglass, tunable tip antenna possible on big rigs. (specifically Skip Shooter antennas) I also highly recommend using an external SWR meter or going to a cb shop to double check the SWR. Most CB shops will check SWRs for free. It's good to make sure your external or internal meter on your CB radio is accurate.
link to Skip Shooter antennas
www.antennapartsoutlet.com/Pages/Products/SkipShooter.html