Direct TV turn off date

I still have standard definition Direct TV at home and just take s receiver out of the house and put it the motor home when we leave. I received an email from Direct that said standard definition broadcast would cease in March 2020. And no longer be supported after that. They offered a “special” deal that they would install High definition equipment at no cost to me for the change. Haven’t done it yet because I cannot receive HD in the motor home with out buying a different antenna and some other expensive equipment changes. Friend of mine spent about $2000 changing his over to HD. Not ready to do that so am kicking the can down the road