The tech data sheet for the C2V is on the website. Look under the "Documents" tab on any individual products page. If a TDS is available, that's where you'll find it. Not all products have such a data sheet and the web guy hasn't been consistent on putting a link to the TDS under all potential variations of a model so you may have to look in several spots to find what you're looking for. Tip: DB8 and C4 don't have formal sheets, so don't expend energy looking for those.
http://www.antennasdirect.com/store/...V-Antenna.html