The 1000.4 WA was only installed for a short time. The .4 dish is a bit heavier and requires more strict mounting options. The .2 is easier to retrofit for upgrades as the .4 requires a heavier steel mast or struts on a standard mast. Most people with EA don't need the 77 bird so the .2 EA works fine only seeing 61.5 and 72. The WA configuration be it .2 or .4 sees 129/119/110.