You can invest in a Slingbox that will stream your Dish box just as if you were at home. Be aware that with a Slingbox, you will be interrupting any viewing by those at home who want to use the same Dish box that you have the Slingbox connected to. You can view the Slinged (streamed) content on a PC, laptop, and mobile device. You have full control and access to your Dish box just as if you were at home. A small remote control appears and it looks and operates just like at home. View using the Popup Player to avoid any ads.
Now, for viewing on at TV without any wires with Slingbox, you can do so by first accessing your Slingbox with your smartphone or tablet. Then you can command it to stream to the TV via the Roku or other device that has the FREE Sling app. You can now use your phone to control the box at home, but the content is playing on the TV. The Slinged content is now being sent from the Dish box to the TV directly from the network, and the phone only functions as a remote. There is a way to Sling to Chromecast, as well. The Slingbox website has all the info. The Slingbox apps for mobile devices (tablets and phones) do cost a one-time price per mobile device. The SlingPlayer for laptop/PC is FREE. Some televisions might be supported so you don't have to connect a device to the TV, but I'm not certain of that, but you can check the Slingbox website.