Have Comcast at home, DISH in RV. Very easy to have them activate and then place inactive. You pay as you need. I can be watching TV in 15 minutes in HD. I call DISH when I leave and have them change the address to where I am going to be and request a local channels signal be sent. When we get there, put out the Winegard Pathways x2 and it does all the finding in 10 minutes. Not heavy. I stow it in the shower floor when traveling.
I tried a Tailgater and it never worked well for me. I also tried to do the small DISH thing but that was the work from HELL!
The Pathways works off the receiver 211z. These are under $100. One came with my 2015 Silverback, I bought the other at CW.
The GOOD NEWS about the portable unit is as others have said, set where there is a clear southern line of sight. DO NOT buy the one that requires a power source. I take my I Phone compass and in 1 minute find the southern sky by pointing the handle due north. Then I turn the TV on and go about set up. MAKE SURE YOU BUY A LOOOONNNNG CHAIN AND LOCKS. They can walk away when unattended and unsecured. Yes folks, there are dishonest campers out there.