There is a 1" x 2 1/4" x 4 1/2" deep hole in the back with a card edge connector in the bottom. There is a removable plastic cover on the hole.
There are 8VSB modules on eBay which, the seller says, are required for OTA. I thinks that's whats missing from the hole.
There is a antenna in and out f-jack but I think it's just a pass through for the tv antenna if you are using a channal 3/4 connection from the box to the tv.
Using the front panal buttons I can step through channels 100 to 999 which all show a "no signal from sat." message and channals 2-1,4-1,6-1,7-1,7-2,9-1,11-1,16-1,25-1,38-1 which all show a "No signal on local channal" message.
I can't access the menu to scan for other local chanals without a remote.
When I select channel up or down there's a momentary menu at the bottom of the screen showing ,I think, remote button selections. One front panal button bring up a menu of channal catagories, all, hd, fav, voom, movie, news, etc.
My best guess is I would not be able to do all this if the box was not activated.
What do you guys think?
(I'm hopeing to set up a couple friends with OTA HD with these things)