Check the listing for details. TDRS-L ATLAS V LAUNCH NASA TRACKING & DATA SATELLITE USAF CCAFS SPACE PATCH. Condition: New. Listed at 14.95 USD. TDRS-L ATLAS V LAUNCH NASA TRACKING & DATA RELAY SATELLITE USAF CCAFS SPACE PATCH -ORIGINAL- NASA's Tracking and Data Relay Satellites (TDRS)The Tracking and Data Relay Satellites (TDRS) comprise the communication satellite component of the Tracking and Data Relay Satellite System (TDRSS). TDRSS is a communication signal relay system which provides tracking and data aquisition services between low earth orbiting spacecraft and control and/or data processing facilities. The system is capable of transmitting to and receiving data from spacecraft over at least 85% of the spacecraft's orbit.The TDRSS space segment consists of six on-orbit Tracking and Data Relay Satellites located in geosynchronous orbit. Three TDRSs are available for operational support at any given time. The operational spacecraft are located at 41°, 174° and 275° West longitude. The other TDRSs in the constellation provide ready backup in the event of a failure to an operational spacecraft and, in some specialized cases, resources for target of opportunity activities.The TDRSS ground segment is located near Las Cruces, New Mexico, known as the White Sands Complex. Forward data is uplinked from the ground segment to the TDRS and from the TDRS to the spacecraft. Return data is downlinked from the spacecraft via the TDRS to the ground segment and then on to the designated data collection location. THIS - ORIGINAL - FULLY EMBROIDERED - NASA - 4" SPACE PATCH IS IN - MINT - CONDITION THANKS FOR LOOKING, I WILL BE HAPPY TO COMBINE ITEMS TO SAVE ON SHIPPING **** PLEASE CHECK OUT OUR - EBAY STORE - AND OTHER EBAY AUCTIONS **** A LOT MORE GREAT PATCHES, CHALLENGE COINS, FLOWN MEDALLIONS, AND INCREDIBLE AUTOGRAPHED NASA PHOTOS NASA LITHOS AND SPACE COLLECTIBLES ARE LISTED ****PLEASE KEEP WATCHING, WE ARE ADDING NEW ITEMS DAILY****