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Questions tagged [amateur-radio]

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1
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1answer
37 views

Data Rates and Radios with Satellites [closed]

I am new to using radios and was wondering why do data rates matter when you use a radio to pull info from somewhere else. Also what does it mean when a satellite sends a wide band signal. Thank you ...
3
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1answer
64 views

How can one know that Chang'e-4 was in “locked to the Queqiao” from this SDR spectrogram?

Deep space SDR enthusiast and amateur radio operator Edgar Kaiser @df2mz's 28-Dec-2018 tweet says: Chang'e 4 in lunar orbit last night on 8479.77 MHz. The spacecraft seems to be locked to the ...
0
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1answer
51 views

News of eXCITe with QIKcom-2 and SeeMe, have they been launched, or is there currently one scheduled?

Comments under the question What ever happened to SHERPA? about NovaWurks, Inc. led me to search for the DARPA eXCITe microsatellite. Spaceflight 101's page includes: Th(e) objectives of the ...
14
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1answer
188 views

What satellites can I receive Images from with a radio?

Are there any satellites that I can receive image data streams with an SDR and antenna? I already know about NOAA 15, 18, 19 and METEOR - M 2. Are there any other radio satellites that I can access ...
55
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3answers
14k views

How did NASA prevent third parties from spoofing Apollo communications?

The Apollo crews transmitted footage to Earth using SSTV, a ham radio technique that amateurs and pirates can use to send similar messages around the world. Did NASA have any technical ...
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5answers
8k views

What is the feasibility of a rocket hobbyist achieving a LEO orbit with a microsat?

Along with being a rocket hobbyist, I'm also an Amateur Radio Operator. I would like to determine the possibility of placing a "microsat" a miniature packet radio satellite, into a low earth orbit.
31
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4answers
9k views

What would one need to do to get an amateur satellite into orbit?

I've recently become interested in amateur satellite packet radio, and I've seen that the bandwidth and thus the bitrate is extremely low on most amateur satellites, not even factoring in noise. So I ...
4
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2answers
227 views

Have amateur satellites ever experimented with optical communications?

I meant to include the more recent amateur satellites such as cubesats, and also amateur radio satellites - where the heritage of amateur satellite building (mostly) has its roots. Have amateur ...
5
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3answers
603 views

Are these really deep space amateur radio satellites?

In this answer there is a link to an amateur radio website listing what looks like satellites of interest to that community. The list is long (over 400 lines) and has a designator character in the ...
5
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1answer
456 views

Why do these 'spy' satellites carry amateur radio packages?

Cosmos 2499 is in this list of amateur radio satellites and according to Gunter's space page it contains amateur radio packages, and are 'secretive', and performed proximity maneuvers with its launch ...
8
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2answers
130 views

How can I figure out the distance to Juno at any point in time?

Juno will fly by Earth on October 9, 2013. There is an event to encourage Amateur Radio Operators to say high to the satellite. What I'm trying to do is figure out if I have any chance of pulling it ...
5
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2answers
2k views

What are the risks involved in amateur high-altitude ballooning, and how can we mitigate them?

Over the past few years, it's become somewhat of a trend to send up high-altitude balloons and post videos on internet. Well-known examples include Toy Train in Space and Picard & Kirk in Space. ...
16
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3answers
357 views

Is there a pre-published time that astronauts on the ISS will be available on Ham Radio?

The International Space Station has a Ham Radio station, and I've heard that the station frequently makes contact with people on the ground. I've seen the crew timelines, but they only publish what ...
14
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3answers
2k views

Cubesats in lunar orbit and beyond - how does communication work?

Somewhere I read that there are serious plans to send a cubesat into lunar orbit. A few years ago, the ISS was also offering a launch opportunity for such a mission. I guess that it was actually ...