charmin
Hi,
Ref C4BC8A41
I have just manged to get my new OS2 working, I noticed it was dropping off from the WiFi occasionally even though the signal strength is very good, also occasionally in the middle of receiving and transmitting the signal will drop out.
I also noted my Yale Wireless Alarm System was now coincidentally also playing up, not always setting correctly and not all sensors were working
sometimes
, checking I found the wireless system of the alarm TX / RX is at 434MHz.... putting two and two together I wondered if there was an adjacent channel interference problem.
(This was all done over several days and many hours of investigation...)
So: Switching off the Modem, the Alarm is OK, it is difficult to switch off the alarm totally however by disabling as many sensors as possible and temp shielding the control box with aluminium foil the modem shows an improved WiFi signal strength of about 10dB for some reason and also no longer drops out during TX / RX, there is no connectivity to WiFi within the alarm system.
So it is seems to be an EMC problem and interference from both, affecting each other.
I am hoping you have come across this before but often I find I am the first person ever to find these sort of problems... HI
If you have, what was the fix.. and I need to know what is the maximum / minimum (lowest / highest ) frequency I can change the modem to.
There is a suitable slot at 438.8MHz, will the modem work at this frequency, I want to go well above the 434MHz to minimise any inter-mods effecting the alarm, or is there an optimum frequency you know to alleviate this problem, of course this means me changing all of the code plug OS frequencies I have now programmed in which will be a pain but there may be no choice ?
Clearly dropping the TX power level of the modem will help problems with the alarm but not the other way around unless I move the modem to my garage or similar, further away from the alarm but this is not going to be very convenient.
Or any suggestion you have apart from changing the alarm system..... or if so you can pay for it.. HI
Regards
MB
charmin
Hi,
I have now tried changing the frequency up to 438.9 which is the highest allocated part of the band, it does seem a lot better but I get the very occasional drop off when in RX, the TX does not seem to be causing a problem anymore with the alarm, I will keep monitoring it and hopefully there will be no more problems.
Thanks
M Brown