The short answer is no , if it says pro more likely the LNBF is a Dish Pro LNBF assembly, therefore only usefull for DN circular satellites with almost no unencrypted channels. The size od the dish reflector is more likely too small, usually 20"I think for a Dish 500 system and a bit bigger for newer systems.
In general you need a 90 cm dish (the bigger the better) , a Ku Standard LNBF and a typical Digital DVB-S satellite receiver at least. That is only for Ku signals , there are a few interesting channels on that band. To get more than 1 bird automatically add a small H-H motor for 70-80 bucks. If you want PBS HD then an HD receiver is needed , preferably capable of the new DVB-S2 8PSK signals for around 150-200 USD depending on brand or a used ebay one for less.
If you want to go into C band then a way bigger dish is needed , minimum 6 footer , preferably 8.5 or above, and also an actuator arm (100 usd) and the controller for 60 bucks. Old dishes in good shape could be found for free or almost, look around.
Now, I can get History and Bio, plus Pentagon over at 101W I think with a rather small 24"round dish here in Toronto on most days (I am sure under even light rain it will go away) so maybe you could try with yours if it happens to be close to 24" (some DN dishes are that big I think). You still need the 10 bucks ku standard LNBF and typical digital FTA receiver (60 usd maybe?)
As usual , I almost forgot , Welcome to the Forum.