The NOAA weather satellites are US satellites. They are used for meteorological weather recording. These send analog APT images to earth on the following frequencies: NOAA 15 = 137.620 MHz. NOAA 18 = 137.9125 MHz. NOAA 19 = 137.100 MHz (NFM). The transmission power is just 5 watts. The Noaa Birds are so-called LEO Sats, polar orbiting weather satellites that orbit our planet at an altitude of approximately 850 km. How long the three remaining “Birds” will continue to broadcast is uncertain, as they have already reached an impressive age. Noaa 15 and 18 have been a bit weak lately :-), but we hope that they will last us for some time.
Latest: The reception of Noaa 15 is stopped because it no longer provides usable image quality.
The Meteor M2-3 is a Russian weather satellite and is considered the successor to the Meteor M2-2, which also provided us with wonderful images until the end of 2022, unfortunately it is now out of operation. Like the Noaa satellites, it is pole-orbiting (LEO SAT). It is used to monitor the temperature of the atmosphere and the sea surface, air humidity and (through optical sensors) to measure cloud formation, ice and snow cover. He sent digital LRPT images alternately on 137.100 MHz and 137.900 MHz.
You can see all the images received from the satellites here
At the moment only the Noaa satellites can be listed but we are already working on including Meteor as well!
How do we receive the Noaa and Meteor satellites?
At our offgrid station we use two RTL SDRs from Nooelec, one of which is connected to two Raspberry Pi 4 8GB via USB. The two RTL SDRs are connected to a Comet antenna splitter, from the splitter it continues via an H155 coax cable to a Winkler QFH antenna. One Raspberry Pi is responsible for receiving the Noaa Birds and the second is responsible for Meteor. Of course you could also run everything via a Raspberry, but you have a larger yield of images if you separate the sats, as it can happen that the overflights of Noaa and Meteor cross each other. As software for both Pi's, we use the finished image from Jochen Köster DC9DD, which proved to be absolutely reliable for long-term use.
Link Hardware:
Raspberry Pi4 8GB, Nooelec SDR, H155 Koaxkabel, Splitter, SD Karte, Winkler QFH
Link Software (Raspberry Image von DC9DD):
Raspberry Noaa V2 Edition 2024
User:pi
Passwd:raspberrynoaa
Remember.Different Keyboards is y = z.
Also look on Cabs Lock / Shift Lock is not Enabled.