New to here, but last few weeks been having problems receiving 119 even channels. I have older dish 500 with a sw21 switch and legacy 4700 reciever. Trouble is antenna is installed on a tower and if I have to climb that or take down to check connections I'm thinking of just replacing it with a new 1000.2. That brings another question, can I just use that antenna without adding hd right now with my old reciever or do I need to upgrade that too? Don't need hd right now but if I want later would be easier. Torn between trying to fix what I have or replaceing part of it.