Good afternoon. Can anyone tell me how to increase the input purity on the F10N GPS module?
Use a good antenna. Use a ground plane under the antenna. Keep the antenna cable as short as possible. Make sure the antenna has a clear view of the sky.
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Everything YellowDog mentioned, also:
You can use a higher-gain antenna
Make sure there aren’t nearby EMF sources/other cabling/power sources near the setup
For extreme cases you can use shielded cabling