I have a Davis Vantage Pro 2 6163 that working since July 2019. It worked fine until May 2020, so it started to have lack of RF signal in some occasions, but it was very few moments. In June 2019 this problem got more serious, so I thought it was battery problem. I switch the CR123 battery and it start working fine again, but in 2 months, during some hours almost everyday, ISS was not transmitting, could be at 3, 4 or 6 am, even 3 or 4 pm in a sunny day. Now, in February 2021 and March, it was almos 95% of time, with no ISS signal. Some days ago, start working again. Se WU graphs below:
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Station is installed in a electricity pole and console is inside a building, less then 100m away from station, in a lower level. The building have a metallic coating and there is maybe 2 or 3 walls on the way. Console is inside a rack mount for routers and switches. See pictures below:
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Console is inside a building like this:
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Here the distance between ISS and console, less then 90m:
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One day I went to the location with a Davis Vantage Vue console and I stayed there about 20min without get ISS signal. When I arrived home, did the same test with my other Davis VP2 and I got ISS signal in less then 5min. I don't know if can be something there that make signal weak sometimes or if it's a kind of problem with PCBA. Strange is that ISS started again to trasmitt, but ISS reception is always below 60%, 30% sometimes.