Can only hear two recorded shows out of 30 from my Dish recorded shows

Hi. I think you may have misunderstood how this product works. It simply relays an analog audio signal from one place to another. It isn’t responsible for which channels you can listen to.

For testing purposes you can compare the results with a pair of wired headphones. The sound you hear from the Sennheisers should exactly match what you hear with the wired headphones.