i have had dish for 2 months now and want to save 5.99 a month and get a ota antenna installed on roof. with this i can get bmore and d.c. digital stations. i have a 211k and a 622. My question is when i install the new ota antenna do i need to run the cable from the antenna to each receiver or is there a way i can combine the ota signal with the dish signal. i dont want to buy a lot of cable but if i need to i will. One tv is in basement the other one is in bedroom and we will get another one in living room soon. also any antenna recommendations zip code 20720 i know i need a vhf and uhf but i want to be able to get bmore and d.c. with one antenna