Question: What is the difference between an HD antenna and a regular old antenna?
Answer: THE PRICE
Yup, that is the only difference.. I have seen a 20 dollar antenna sold as HD for 100 (well 99.95).. I kid you know folks were throwing good money away on that thing.. Oh, that was in 2007 TODAY that antenna sells for 20 bucks.. I think it was 15 back then.
Now there are antennas designed for Local, Firnge, Medium and Deep Fringe.
The Winegard Batwing is the best VHF antenna made for RV use
Add the Wingman and its the best UHF as well
Best is based on signal strength measurements made by an independent (Forum member's) lab by the way.
Add the SENSAR PRO indoor module/power supply/switch/splitter/much more and you have the best RV antenna system made
NOTE: Winegard Sensar IV comes with the Wingman in the box.
Many older antennas can use new coax.
Recently put my full blown Winegard Sensar system up against a neighbor's JACK of which they were (past tense) Proud. I got 25% more stations.