Linked Questions

17 votes
2 answers
10k views

How to calculate data rate of Voyager 1?

I've read the following passage in the answer to the Quora question How can Voyager send a signal strong enough for us to receive, in spite of its enormous distance from us? And how can it have the ...
Tommytii's user avatar
  • 173
6 votes
2 answers
615 views

Does the Ingenuity helicopter on Mars have a radio call sign?

This Deep Space Network page lists some of the call signs of various robotic spacecraft. For example, Curiosity is MSL, and Perseverance is ...
DrSheldon's user avatar
  • 48k
4 votes
2 answers
463 views

Quantitatively, why will optical communication be better than X-band for deep-space communications?

In a question about communicating with Voyager, an answer asserts: [70 meter dish antennas deployed in space] just isn't done, and it probably won't be, since optical communication is definitely ...
Phil Frost's user avatar
  • 1,033
2 votes
3 answers
488 views

Did New Horizons use its smaller medium-gain antenna for most/all downlinking of Pluto and Arrokoth flyby data?

Brian May's New Horizons video (below) was released at about the same time that the New Horizons spacecraft passed 2014 MU69 Arrokoth and includes a lot of technically meaningful graphics. One item ...
uhoh's user avatar
  • 149k
4 votes
1 answer
482 views

Why are deep space "beacons" usually UHF, so low (in freq) that DSN can't hear them? And how unusual is it for a Mars lander to have an X-band beacon?

This answer to Is there independent evidence that China landed a robot on Mars in May 2021? and an extensive comment below it indicate that the Zhurong Mars lander had an X-band beacon, information ...
uhoh's user avatar
  • 149k
4 votes
2 answers
277 views

What does it take to upgrade a radio antenna to receive from the surface of Mars?

All the discussion about receiving transmissions from Mars rovers got me thinking, what determines the capability of a radio antenna, and what goes into adding the capability of listening to a Mars ...
Schwern's user avatar
  • 8,006
2 votes
1 answer
219 views

Specifications of a High Gain Antenna

I am designing a telecommunications device capable of redundant communication from Earth to Saturn's moon Enceladus which ranges from 8 to 11 AU from Earth. I have decided on an X-band high-gain ...
Jose De La Pena's user avatar
2 votes
1 answer
224 views

Deep Space Network's transmitter power versus frequency?

Just a general question: In regards to the Deep Space Network antennas, how does power from the transmitter of the antenna relate to the frequency used? I believe the antennas use X band frequency for ...
Kevin's user avatar
  • 23
1 vote
1 answer
138 views

General overview of how deep space communications performed

What frequency bands and general classes of antennas are used to communicate with deep space spacecraft? As an example, if we place a cubesat in orbit around Io, what would the antenna need to be ...
Valentino Zaffrani's user avatar
1 vote
0 answers
183 views

Can I transmit signals from a wristwatch to geostationary orbit?

In comments below this answer to the question Which satellites can hear emergency signals from Scott Kelley's watch? we are (or at least I am) trying to figure out definitively if a wristwatch can ...
uhoh's user avatar
  • 149k