[jljamison]

I have two SAT-T60s from years ago that still work great. If I replace my dual LNB oval dish with a new HD dish, and replace one of my SAT-T60s with a new HD DVR, will the other SAT-T60 continue to operate? Or will I need to keep both dishes in order to have one HD PVR and one non HD Tivo/Directv combo unit?

Next question: where can I buy a directv antenna, either HD or not?

 

[Mertzen]

Yes. 5LNB will work with all IRds.

 

[Dirac]

Only thing that can mess it up is the non-legacy SWM ports. Even the BBCs will not affect the DTiVos.

 

[jdspencer]

....
Next question: where can I buy a directv antenna, either HD or not?

Here http://www.solidsignal.com/cat_display.asp?main_cat=02&CAT=DIRECTV Dishes