My M5 is not close to the external sensors. What can I do to improve connectivity?

Switching from internal to external RF antenna

Here is a detailed guide how to rewire your M5 to external RF antenna in case you are planning to deploy your station but your M5 is not in close proximity of the outdoor sensor (Weather Station). A rule of thumb when to do this: You are living on the 3rd floor of a building in the city or crowded are and you want to install the station on the roof (like a true Batman). Your station is not close to the M5 and there are a lot of obstacles in between so now you gotta switch the internal to external antenna. Otherwise the the Chainlink Icon will go red. https://www.youtube.com/watch?v=FP4rT3FTz0M&t=20s