TV will likely phase out SD in 2019. Spending $20 today for a new card for your D10 receiver should be a pretty good investment compared to the other options. Assuming the receiver works and the LNB on the antenna is good you would be up and running in short order.
As long as you don't have a Genie at home you should have no issue and even if you do have a Genie you might be able to find someone who understands you will be using this in your RV (vacation cottage).
What I post is my 2 cents and nothing more. Please don't read anything into my post that's not there. If you disagree, that's OK.
Can't we all just get along?