Some other relevant details from http://voyager.jpl.nasa.gov/Proposal-2008/Voyager_SR_2008.pdf http://voyager.jpl.nasa.gov/Proposal-2008/Voyager_SR_2008.pd...:

Some other relevant details from http://voyager.jpl.nasa.gov/Proposal-2008/Voyager_SR_2008.pdf http://voyager.jpl.nasa.gov/Proposal-2008/Voyager_SR_2008.pd...: "Voyager 1 is escaping the solar system at a speed of about 3.6 AU/year while Voyager 2 is leaving at about 3.3 AU/year. Power is the limiting lifetime consumable. The two spacecraft have power to continue returning science data beyond the year 2020. It is likely that at least one of the spacecraft could enter interstellar space while adequate power is still available. All other consumables are adequate for continued operations well past 2020." "Electrical power is supplied by three Radioisotope Thermoelectric Generators (RTGs) which are performing nominally. The current power levels are about 286 watts, with power margins of about 34 watts and an average degradation rate of about 4.3 watts per year." "Real-time telemetry data capture is accomplished using 34- and 70-meter tracking antennas of the DSN. Capture of the recorded high rate plasma wave data from Voyager 1 requires the use of an array of 70- and 34-meter antennas." "Uplink communication is via S-band (16-bits/sec command rate) while an X-band transmitter provides downlink telemetry at 160 bits/sec normally and 1.4 kbps for playback of high-rate plasma wave data."