Decoding 137MHz signals from passing satellites to get images with a $10 SDR
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Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#2If this spiked your interest... take a look at https://satnogs.org
Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#3If this spiked your interest... take a look at https://satnogs.org
thanks a lot, much appreciated
Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#4I remember looking into SDR when I was a student, really amazing what you can pull down for the price of a dinner these days.
I know that you can get the same pictures from the internet but building something like this and seeing how all the pieces fit together is extremely cool.
Also an extremely cool project to do with kids, the output is visual but it's such a cool combination of hardware, software, some light math (to design the attena) and crafting (to build it).
Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#5This article is a few years old now. Unfortunately the NOAA satellites stopped transmitting APT last year.
I don't know if there are any others. I do remember picking it up with a suitably-programmed VHF receiver in the early 2000s with a distinct "tick - tock - tick - tock" sync pulse on every line.
Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#6Is it just me, or does it feel like there's half an article missing? They talk about a PVC pipe, drop a couple pictures and thats it...
Re: Decoding 137MHz signals from passing satellites to get images with a $10 SDR
#7This article is a few years old now. Unfortunately the NOAA satellites stopped transmitting APT last year. I don't know if there are any others. I do remember picking it up with a suitably-programmed VHF receiver in the early 2000s with a distinct "tick - tock - tick - tock" sync pulse on every line.
Hah, yes, this is very old. I wrote this in like, 2014 or 2015 - long enough ago that I forgot it was even on my site.
I haven't really messed with anything in a few years now, but in the interim I had a setup that was pulling in and displaying the NOAA sats (APT) and the Meteor sats (LRPT), and filling in the longer gaps with GOES-16. I guess I should write a short note/post-mortem on the NOAA sats so I don't continue to mislead people.
It looks like the Meteor sats are still running, which could be grabbed with the same setup. But they won't have that same magical tick-tock sound.