2 ms·Radio and light have (for the purposes of this comparison) the same speed in vacuum.by tpmx 7y agoRadio and light have (for the purposes of this comparison) the same speed in vacuum.Tuna-Fish 7y agoThey don't have FCC licensing for the satellites to communicate with each other using radio, the radio links are sat<->ground only.loose11 7y agoFCC licensing in space...