My Acurite does not do well on lithium batteries. It seems to prefer long lasting alkaline batteries.
Signal strength was an issue for me for a while after switching from a Pi3 to a Pizero and upgrading weewx. They were both attached directly to the Acurite's base station. I eventually solved the problem by changing the channel used between sensors and the base station. My thought is changing the Pi caused an interference problem. Greg On Monday, November 16, 2020 at 2:53:36 PM UTC-6 K1IW wrote: > Yes, I should have mentioned the hardware. > > This is an Acurite 15036 which uses 433 MHz. The batteries are brand new > lithium batteries installed > about one month ago. The sensor is located in a rural area, in a summer > cottage > that is unoccupied, as are all the ones around except one house two doors > away. > > I guess the good news is it seems to come back. Hopefully it will make it > through the winter without > needing any attention. > > Thanks, > Bob > > > On Mon, Nov 16, 2020 at 3:03 PM Greg Troxel <g...@lexort.com> wrote: > >> >> Bob DeMattia <b...@demattia.net> writes: >> >> > Quite a bit of attenuation! The sensor is located approximately 8 feet >> > horizontally and fifteen feet vertically >> > from the display. It must be the wet roof! >> >> Not sure what you have for station hardware. That graph suggests Davis >> VP2 or Vue, and there I am pretty sure 'signal quality' is a recent >> average of the fraction of packets successfully received vs what should >> have been received. >> >> Assuming Davis: >> >> Davis at the 8'/15' should be very solid. It's 915 MHz, and it is very >> slow FH, AIUI one data packet on a frequency and a new frequency for the >> next packet rotating among a set of 51 (US). That protects against >> narrowband interference. So I am skeptical that this is just due to >> increased path loss. >> >> I don't look at signal strength on my VP2 often, but I used to see a dip >> from 100 to 98% occasionally, and the time pattern was suggestive of >> some other transmitter, but I haven't figured it out. But it was a >> brief dip to 98%, not hours at 25%. I just checked and last night with >> the temp peak/rain event it was mostly 99.1/99.9% with an occasional >> 97ish%. I can perceive no patterns. Console/sensor distance is >> probably 20' horizontal, 10' vertical, so not so different. >> >> Therefore, I would be suspicious of broadband noise happening because of >> the rain, although I admit that at 900 the level needed to explain this >> does not make a lot of sense. Speculating wildly and beyond the point >> of reason, it could be arcing of a powerline insulator when wet. >> Perhaps listen at 450 MHz during the next rain, or at 900 if you have an >> SDR set up that can function as a spectrum analyzer (rtlsdr/gqrx?). >> >> You can also use rtldavis to listen to the packets: >> >> https://github.com/lheijst/rtldavis >> >> with an RTL-SDR dongle. That might be useful information. >> >> Greg >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/a143f426-083e-49c0-a2fb-bbc2b547becdn%40googlegroups.com.
