Loading ...
Sorry, an error occurred while loading the content.
 

Fwd: ARLS008 AO-40 transponders to open for experimental operation

Expand Messages
  • Pete Hoffswell [via Yahoo]
    This is exciting! I wish I had a 2.4 GHz receiver! ... - Pete
    Message 1 of 1 , May 4, 2001
      This is exciting!

      I wish I had a 2.4 GHz receiver!


      >X-Apparently-To: petehoffswell@... via web3801; 04 May 2001 12:28:17
      >-0700 (PDT)
      >X-Track: 1: 40
      >Subject: ARLS008 AO-40 transponders to open for experimental operation
      >To: pete@...
      >From: "ARRL Web site" <memberlist@...>
      >Date: Fri, 04 May 2001 15:13:39 EDT
      >CC: Subscribed ARRL Members: ;
      >X-NZ-Hop-Count: 1
      >
      >SB SPACE @ ARL $ARLS008
      >ARLS008 AO-40 transponders to open for experimental operation
      >
      >ZCZC AS08
      >QST de W1AW
      >Space Bulletin 008 ARLS008
      > From ARRL Headquarters
      >Newington, CT May 4, 2001
      >To all radio amateurs
      >
      >SB SPACE ARL ARLS008
      >ARLS008 AO-40 transponders to open for experimental operation
      >
      >The AO-40 team has announced that experimental transponder operation
      >will start on Saturday, May 5, at approximately 0800z. The
      >announcement comes in the wake of successful initial transponder
      >tests last weekend.
      >
      >''We expect good conditions on Saturday morning over North and South
      >America and Europe,'' said AMSAT-DL President Peter Guelzow, DB2OS,
      >an AO-40 team leader. Guelzow said the 435 MHz and 1.2 GHz uplinks
      >will be connected to the 2.4 GHz transmitter passband.
      >
      >It's estimated that AO-40 will be available on May 5 in the Western
      >Hemisphere from 0800 until approximately 1400z. Stations should use
      >only SSB and CW. Guelzow said it's expected the transponders will
      >remain available over a period of approximately 10 days.
      >
      >The uplink frequencies are 435.550-435.800 MHz and 1269.250-1269.500
      >MHz. The downlink passband is 2401.225-2401.475 MHz. The
      >transponders are inverting, so a downward change in uplink frequency
      >will result in an upward frequency shift in the downlink.
      >
      >Users are asked to avoid the ''middle'' 2.4 GHz telemetry beacon and
      >give it a clearance of 5 kHz on either side. Guelzow said the
      >transponder might be shut down if the beacon cannot be copied
      >because of interference.
      >
      >He emphasized that the operation is experimental, the schedule
      >subject to change, and the transponders could be shut down at any
      >time without warning.
      >
      >AO-40 ground controllers also plan to test the problematic VHF and
      >UHF transmitters again.
      >NNNN
      >/EX


      - Pete
    Your message has been successfully submitted and would be delivered to recipients shortly.