On 02/08/2021 06:51, Terry Coles wrote:
On Sunday, 1 August 2021 18:53:22 BST Tim wrote:
Has a new Wifi to the area appeared and is swamping music and bells
wifi, thus forcing it off line?
I'm not aware of anything like that.  In any case the five Tiny-TV Pis (which
are all further from the Antenna) would also be affected.  The site is in a
fairly sparsely populated area with a field and cricket ground behind, a few
houses either side and the Minster across the road.

Could you setup a simple ping script to a router or something similar
and i it fails to get a reply then it reboot the PI?
I'm looking into doing something like that at the moment.  The latest
suggestion is to turn off WiFI and then turn it back on again, if the ping
response fails.  I need to be careful; if the script has an error, I may never
get the WiFi back up.  That would need someone on site to fix it.

It is an interesting question.  On my PC which has a 4M cable to a wifi dongle 
hanging in a window, and on the same side of the house as the router, but 
diagonal far corner. (Downstairs west of house to upstairs east of house)  I 
get the following:

wlx000c4300d317  IEEE 802.11  ESSID:"Ashmeads-downstairs"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 78:65:59:4C:0F:45
          Bit Rate=21.7 Mb/s   Tx-Power=20 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=25/70  Signal level=-85 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:312  Invalid misc:216   Missed beacon:0

and repeated goes:

          Tx excessive retries:312  Invalid misc:220   Missed beacon:0

          Tx excessive retries:312  Invalid misc:236   Missed beacon:0

The only other difference that I notice in the results is a changing Bit Rate 
from 19.5 to 52 Mb/s.

possibly nothing of interest or help in here, but I do have Wifi freezes 
occasionally. I'll keep an eye on them in future. Note that the Wifi is 
connected to the router and not to the TP-Link Wifi extender directly below.

Net Analyzer shows TP-Link Extender sig strength  -36dBm against

Router @ -62dBm  and three others at -79, -84, -89  though these values keep 

I think Tp-link extender and router are on Channel 1 and  others on different 
channels, though as I move the device I now have 8 Wifi signals on different 


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