SB SPCL @ ARL $ARLX004 ARLX004 Balloon launch 1/21 ZCZC AX73 QST de W1AW Special Bulletin 4 ARLX004 >From ARRL Headquarters Newington CT January 19, 1995 To all radio amateurs SB SPCL ARL ARLX004 ARLX004 Balloon launch 1/21 Balloon launch January 21 A balloon carrying Amateur Radio is planned for launch January 21 from Boone, Iowa, by a group calling itself the Iowa Balloon Scientists. Payloads will include a transmitter sending global positioning information on 446.000 with transmissions at bursts of 9600 baud once per second; A packet digipeater on 145.550 (-0.600 split), running approximately one watt and switched on and off at 15 minute intervals; A 144/440 MHz crossband voice repeater (listen on 437.250 (plus or minus) FM. There may be some temperature drift. The uplink frequency is uncertain at this time and will be provided on the packet beacon. Since this is the first flight for this payload, there may be less than optimum operating conditions. The packet digipeater and voice crossband repeater will alternate at 15 minute intervals, with changes planned for 00, 15, 30, and 45 minutes after the hour. Interested amateurs are advised to monitor beacons for details on other payloads and operating schedules. The launch is planned for 1500 UTC. An HF coordination net will meet on 7.155 MHz LSB beginning at 1430 UTC with N0AN as net control station. Information from Barry Buelow, WA0RJT. NNNN /EX