I see many posts about not being able to use a Hopper 3 with OTA over a single cable. This didn't make a ton of electrical sense, so I decided to try it out. My current setup has the antenna plugged into a Dish hub solo in place of a Joey. The MoCA network is also shared with a Joey and a Hopper 3. For safety, I did use a POE filter on the antenna since I don't want to broadcast MoCA. I used a Dish Hybrid tap (203962) at the Hopper 3 to split off the antenna into the OTA adapter without blocking the MoCA signal from the Hopper 3. Finally, at the Joey, I used a balanced 3-way MoCA tap (5-1675MHz) to feed MoCA to the Joey and OTA to two TVs in the area. Everything runs as expected and is perfectly stable. The Hybrid Tap is supposed to drop around -10dB and the balanced splitter is -5.5dB, so the antenna signal needs to be relatively strong/amplified for this to work. But there is no conflict of the frequencies; all can co-exist. Anyway, just wanted to post what was has been tested in case it can help some people out.
-Bob
-Bob