I guess it might be a little too strong to say, "don't use", but I have encountered several posts where a new comer complains the 4228HD doesn't work. Also, it should be noted that the antenna chart references the 4228HD as the hacked version, and newcomers who want the quick answer might miss this and think, "wow, this is a big antenna, it must be good", but we realize that bigger is not always better. At a basic level (without hacking) the AD DB-8 and the 91 XG are much better than the unhacked 4228HD, especially at high UHF, but for those who already have a 4228HD0 help is here (ref. Lineloss) to make it a top-dog!
91XG (47'), YA-1713 (42'), CPA-19, DB4e (37'); Denon AVR-1312