I have a new Mitsubishi DLP television and it is hooked up to digital cable box. I would like to be able to get some HD channels that are broadcast on air and use this input to get PIP use. The salesperson at the Big Screen Store where I purchased the television recommended a Radio Shack antenna which he said has gotten rave reviews and cost only 15.00. Anyone have any suggestions, or know about this antenna? Thanks for any help.