** Shares of U.S. telecom companies dip premarket after satellite communications provider Echostar SATS.O agrees to sell spectrum licenses to SpaceX for $17 billion
** Deal comes months after U.S. FCC probe about Echostar's underutilization of assets for 5G service expansion
** AT&T T.N down 4.5%, Verizon VZ.N down 3.9% and T-Mobile TMUS.O down 5.1% premarket
** Echostar shares up 19.7% at $80.50
** Up to last close SATS up 193.6% YTD, T up about 30%, TMUS up 14.5% and VZ up about 11%
(Reporting by Avinash P in Bengaluru)
((Avinash.P@thomsonreuters.com;))