Hi to all, Looking for info on the LNB I need to recive HD with a HR21 I need to use a Phase 3 dish becaues I use a Follow Me TV mount, its a boat thing. If anyone can help I will say thanks now.Thank you. Sonnie

There is no drop in LNB option for HD on the Phase III.

Some have made major modifications to the Phase III and had some fair weather success but the dish is much too small for all-weather performance.

A Slimline dish is necessary for shore-based or in-motion HD reception.