Most of the calibration involves adjusting the antenna. You will need a SWR meter from Radio Shack ($25 +/-) to do so. here's a good link that describes what is involved to calibrate: http://jeephorizons.com/tech/swr.html
It's not that hard, especially if you pick up a SWR meter and follow their steps .
Hope this helps.
very good link.
now i need a cb :oops: