5 ms·
> Does this mean that someone could set up an antenna and get a copy of the Voyager software? Might be cool to see. DSN NOW is neat to watch - and sometimes yo
by shagie 3y ago
> Does this mean that someone could set up an antenna and get a copy of the Voyager software? Might be cool to see.
DSN NOW is neat to watch - and sometimes you see VGR1 and its related data https://eyes.nasa.gov/dsn/dsn.html https://eyes.nasa.gov/dsn/dsn.html
And since no one is talking with it, I'm going to find a screen shot. https://space.stackexchange.com/q/17430 https://space.stackexchange.com/q/17430
The DATA feed (at 159 baud - bits per second) is being received at -157.95 dBm ... seven years ago. 1.6 x 10^-22 kW.
This is getting into the realm where noise will dominate the signal.
https://www.seti.org/detecting-voyager-1-ata https://www.seti.org/detecting-voyager-1-ata
> The above assumes a receiver temperature of 120 Kelvin at 8.4 GHz. The receiver temperature could have also been measured using the quasar observation, but the 120 Kelvin figure is not far from reality given previous measurements.
The Allen Telescope Array is probably the 'cheapest' way to detect the signal.
> The telescope comprises 42 fully-steerable 6.1m-diameter telescopes, of which ~20 are fitted with wideband cryogenically cooled feeds.
For comparison, liquid nitrogen is 77 Kelvin.
They were able to detect the signal - but in that diagonal chart, note how difficult it is to see the diagonal from the visual noise.
That is only detecting the signal - not decoding it.
- shagie 3y agoAs I write this now, VGR1 and VGR2 are both showing up on DSN NOW. https://imgur.com/6bgg3Uj https://imgur.com/6bgg3Uj This brings up another issue. The DNS network is spread across Goldstone, Madrid, and Canberra allowing for continuous tracking of a spacecraft. A single site would only be able to get a fraction of the broadcast or may be out of position for a repeating broadcast.