Need an adapter for my antenna but what?

If I remember correctly RG6 is 75 ohm impedance and this type of antenna usually uses a 52 ohm impedance coax (RG-58 or RG-8U etc) but if its for receiving only it shouldnt be a big deal.

That antenna has a SO-239 connector I think so it needs a PL-259 mating connector. Assuming that the RG6 has a standard "F" type connector you need a female "F" to a male PL-259 Connector. to mate the coax to the antenna or just cutoff the "F" connector and put on a PL-259 Connector.

I hope this is helpful.
I couldn't find this part at Radio Shack. Any of you guys have this part number?