SB SPACE @ ARL $ARLS013 ARLS013 STS-59/SAREX update ZCZC AS57 QST de W1AW Space Bulletin 013 ARLS013 >From ARRL Headquarters Newington, CT March 18, 1994 To all radio amateurs SB SPACE ARL ARLS013 ARLS013 STS-59/SAREX update Astronaut-hams Jay Apt, N5QWL, and Linda Godwin, N5RAX, will operate the Shuttle Amateur Radio EXperiment from on board the Space Shuttle Endeavour in April. The nine day mission is scheduled to launch on April 7 at 1207 UTC. Jay is the first astronaut-ham to fly with the SAREX payload three times. His two previous flights were STS-37 in April, 1991 and STS-47 in September, 1992. Linda also operated SAREX during STS-37. The mission will carry the Shuttle Radar Laboratory 1 (SRL-1) payload. Radar images generated by the Shuttle Imaging Radar will be used by scientists to help understand some of the processes which affect the earth's environment, such as deforestation in the Amazon, desertification south of the Sahara, and soil-moisture retention in the Midwest. Jay is the commander of the Blue Shift and will operate the shuttle systems during the ''night'' shift, while Linda is responsible for overall operation of three large radars in the shuttle's cargo bay during the ''day'' shift. Jay has reported that he will be asleep over most US passes, and that Linda will be busy with assigned duties for most daylit US passes, so try to contact the crew on packet over the US if the sun is up. The packet call sign will be W5RRR-1. They will try to operate FM voice when they are not otherwise busy and at night, or when the ground is cloudy. The crew is generally busy taking pictures of the Earth during clear daylight passes. Jay also indicated that he will try to activate SAREX about 3 hours into the mission. Deactivation will occur at about 8 days, 17 hours after launch, unless they get a one-day science mission extension, in which case it will be deactivated at about 9 days, 17 hours after launch. The worldwide SAREX downlink frequency is 145.55 MHz. The downlink is the astronauts' transmit frequency. Please do not transmit on this frequency. The worldwide FM packet uplink frequency is 144.49 MHz. The FM voice uplink frequencies are 144.91, 144.93, 144.95, 144.97 and 144.99 MHz. Earth stations should use these as their transmit frequencies. In Europe, stations should use 144.70, 144.75 and 144.80 MHz. Send reports and QSL cards to ARRL EAD, STS-59 QSL, 225 Main Street, Newington, CT 06111, USA. Include the following information in your QSL or report: STS-59, date, time in UTC, frequency and mode (FM voice or packet). In addition, you must also include a SASE using a large, business-sized envelope if you wish to receive a card. The Orange Park Amateur Radio Club in Florida has generously volunteered to manage the cards for this mission. Thanks to Astronaut Jay Apt, N5QWL, and the SAREX Working Group for the preceding information. NNNN /EX