If the Oshawa re-transmitter carries their own local news separate from Peterborough, then it should also be on satellite, and probably even have their own broadcast license.
The Oshawa re-transmitter very much has differences from its Peterborough counterpart and the argument could easily be made that each should have its own separate license and therefore that both should be carried on satellite. Here is a sample 24hr period.
5:30-7:00 Peterborough:Quick Study and Local News
Oshawa: off air until 6:00, then Quick Study and Local News
8:00-9:00 Peterborough: Paid Ad and Religious programming
Oshawa: ethnic programming
12:00-13:00 Peterborough: CBC News Now
Oshawa: Local News and Colour Confidential
17:30-18:00 each has its own local news
11:30-sign off Peterborough: Late Show with David Letterman, paid ads
Oshawa: Local News, George Strombolopolous, different paid ads
Each also has its own commercials during breaks.