Voyager Space probe

Discussion in 'General Electronics Chat' started by Nathan Hale, Apr 24, 2014.

  1. Nathan Hale

    Thread Starter Member

    Oct 28, 2011
    Hello All! Hope all is well.
    I was reading about the Voyager Space probe sent into space about 35 years ago.
    Under the "Future of the probe" section in Wikipedia It says in the year 2015 they will terminate the Data Tape Recorder (D TR) operations (limited by ability to capture 1.4 kbit/s data using a 70 m/34 m antenna array. This is the minimum rate at which the DTR can read-out data.)

    Why would they have to terminate the DTR due to a minimum rate? There seems to be something problematic about the data being read out slower than normal.
    Can some one shed some light as to why a slower data rate would be a problem?

    Thank You
  2. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    My understand is that the DTR operations will be terminated due to power restrictions on the spacecraft due the Plutonium fuel source decaying.
  3. richard.cs


    Mar 3, 2012
    It sounds like it will be too far away to maintain a 1.4 kbit data link with the power and antennas available (energy per bit and all that), and that since that instrument can't be set to output at a lower rate it will become unusable.
    Nathan Hale likes this.
  4. nsaspook

    AAC Fanatic!

    Aug 27, 2009
    We could still maintain the 1.4kbit link at that distance but because it's out of the heliosphere shockwave the Plasma Wave Subsystem (PWS) that uses the DTR is less important than the fields and particles data acquisition capability that needs to be maintained for the longest time possible.

    As usual
    Wikipedia is incomplete as the complete line in the NASA documents says about the DTR shutdown.

    As the reason.
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