opinion:
Yea, that DG380 should handle most 1.2's, even if you have to remove their mount to reduce weight (recommended).
I've read nothing bad about it, and it's the biggest brute currently available.
When you have more info on the dish, we can give you better advice.
"databahn", must be some local company.
They undoubtedly used a commercial dish, just as you see Musak logos and Primestar logos on great quality ChannelMaster or Prodelin commercial dishes.
Is the dish stamped steel (take a magnet), or is it a molded, fiberglass reinforced resin (in which case, it'll have molded ribs on the back side).
example:
MexSunny and molded dishes in Mexico:
http://www.satelliteguys.us/fta-shack/131140-pics-dish-farm-post-yours-too-8.html#post1618007
I'm not a big supporter of C-band on little dishes, but a 1.2m is getting big enough to be more than just a toy.
Use your own discretion. Many threads and discussions on the forum.
I'd concentrate on a good LNB and feedhorn for Ku (dish may come with 'em) to get started.
Then over time, as you read more, you can make the leap and deal with the expense (probably $100 for LNBF and conical scalar) to try C-band.
To tell if your neighbor blocks your access to particular birds, see:
ThisBUDsForYou and his soda straw inclinometer
http://www.satelliteguys.us/free-ai...a-straw-inclinometer-line-sight-pictures.html
Delta Charlie had some variation on the idea, too
http://www.satelliteguys.us/free-air-fta-discussion/146479-15-min-duct-tape-elevation-gauge.html
PS: if I saw a $10 offer for a 1.2m dish, of most any kind, I'd grab my tools and be out the door! - :up