Does this content differ from what is already available on the PBS app with the paid "Passport subscription"?
This is a common misconception of "donations." Only the excess of the "donation" minus the fair market value of the "gift" is tax deductible.
So a $120 donation that gets me a nice $20 tote, will have a tax-deductible receipt of $100.
So for a video streaming service I'd expect none of it to be deductible, because if you look at other TV streaming services, you pay $10/mo for the service, so the fair market value of PBS passport might actually be higher than the donation amount.
I'm going to take a guess and say that it might be the same content, or very similar.