I tell you how to mount and get the best SWR on a perfect quarter wave antenna in this video and dont forget to Look for my awesome custom Cobra CBs on ebay for sale. You will be heard! Buy this riser off ebay its a ten inch riser. Its called a whip adjuster and it cost 50 bucks ouch but damn well worth it. Got the whip at radio shack. for 20 bucks. They sell them on ebay and amazon.