From Signal Identification Wiki
NOAA APT Oddity |
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| Frequencies |
137.1 MHz |
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| Frequency Range |
137.1 MHz - 137.1 MHz |
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| Mode |
FM |
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| Modulation |
— |
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| ACF |
— |
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| Bandwidth |
45 Hz,0 Hz |
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| Location |
Western Montana, USA |
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| Short Description |
I was waiting for a pass from the satellite NOAA 18 when I was a choppy APT signal from what I assumed from NOAA 19, but a picture from WXtrack showed that its radio horizon was over 1,000 miles away from my location (the green cross).l I am not sure if this is some sort of signal propagation or if there was an old NOAA satellite that may have come back to life (I have seen articles from a few sources of how this might be). |
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| I/Q Raw Recording |
— |
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| Audio Sample |
— |
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