this post was submitted on 13 Aug 2025
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Amateur Satellites

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Discussion about amateur reception and processing of data from artificial satellites, primarily through radio signals but data from internet resources is welcome too.

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Today, the 13th of August 2025, NOAA-19 was permanently shut down after a battery failure on the 9th. Until the 11th it was still transmitting APT, but on the 12th it only transmitted DSB without HIRS or SEM. On S-band it was also transmitting DSB for a while, then HRPT with only TIP data on night the 13th and this morning.

Since this was unexpected, I didn't get the last APT it was transmitting, or record the shutdown of the satellite, but here is the best APT I have from the day before (the 11th). RIP NOAA-19.

The decommisioning of NOAA-15 was due on the 12th, but was delayed to the week of the 18th on the 11th due to an "anomaly" with NOAA-19.

links:
POES Decommisioning and NOAA-15 delay message
NOAA-19 Decommisioning message

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[–] Coolbeanschilly@lemmy.ca 10 points 10 months ago (1 children)

The deliberate blinding of the eyes of science continues apace, given that I doubt the Dementia Dorito will fund replacement satellites.

Looks like it's up to the EU or China to take the lead in the truth.

[–] thomasdouwes@sopuli.xyz 12 points 10 months ago (1 children)

I will mention that these are very old satellite, this one was 16 years old, there are replacement weather satellites, but they are not easy to receive with cheap equipment like these, requiring internet access or a very expensive setup.
There are 3 frequencies weather satellites generally use for real-time imagery:
VHF: can be recieved with a stationary antenna for very cheap.
L-band: requires a tracked dish, is a bit more expensive, but the rotor can get very expensive.
X-band: requires a more accurate tracked dish, very expensive, sometimes hard to acquire hardware, and an expensive high sample rate radio.

The new US satellites use X-band exclusively while these older ones used both VHF and L-band.
Currently the only real replacement for amateur reception is the russian meteor series which use VHF and L-band.
China's satellites are also only use X-band.
A couple of european satellites can be received on L-band, but new ones only use X-band. (the L-band ones also need a slightly more expensive radio)

There are also geostationary satellites that appear stationary in the sky, they can often be received on L-band, but thats a different thing.

[–] thomasdouwes@sopuli.xyz 6 points 10 months ago (1 children)

sorry, that turned into a bit of a wall of text!

[–] Coolbeanschilly@lemmy.ca 1 points 10 months ago

All good, the information is relevant. I'm just saying that it's the beginning of the end, at least in terms of NASA weather reporting.

It is a sad thing when we have to gaze at the navels of lesser men than ourselves, just because we worship Mammon rather than truly follow what Jesus and all other faiths teach.