Wifi interference with alarms (1 Viewer)

[SoapyTutti]

Has anyone had any experience or problems with a Campsites Wifi System interfering with their central locking/alarm system or ignition on their motorhome?

I have been approached today at Marjal Costa Blanca Spain that some motorhomer's from various countries think that the wifi here has caused them problems when they have gone to start their engines having been stood for a couple of weeks or the alarms/central locking personally I have not been affected in any such was and started our van on at least three occasions

 

[yodeli]

Well I do have problems the other way round ! The Baby Video system stops my Wifi from working. Either I can check the babies I care in their room and no TV no Internet, OR I Watch TV and have internet!

Guess what I do:Blush: ....


I changed the whole system and came back to WIRED internet and TV LOL!

Done that all day today ! Had to take all the papers and files from one desk and put the whole system in the living room.....and then sort out all the files to put them on the desk in my bedroom .... But ...it's working fine!:thumb:


Frankie

 

[hilldweller]

Wifi System interfering with their central locking/alarm system or ignition on their motorhome?

It shouldn't on a properly designed system. That's what the EMC directive is all about. One system should not interfere with another.

WiFi is on a frequency of
2,400,000,000
Unlock dongles
470,000.
800,000.

Huge difference.

But if the design of the alarm or ignition is crap or faulty, who knows.

There was a case in the UK where the new Police radio system was on a close frequency to door dongles and if people parked near a transmitter they could not get in their car.

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[busby]

You do not get these high tech problems with an old van !!!BUSBY.

 

[pappajohn]

It shouldn't on a properly designed system. That's what the EMC directive is all about. One system should not interfere with another.

WiFi is on a frequency of
2,400,000,000
Unlock dongles
470,000.
800,000.

Huge difference.

But if the design of the alarm or ignition is crap or faulty, who knows.

There was a case in the UK where the new Police radio system was on a close frequency to door dongles and if people parked near a transmitter they could not get in their car.

that was also a problem for some vehicle makes, subaru and saab being two, parked near the early warning station at fylingdales, Whitby.

fylingdales radar emitted microwaves which would block some remote key fobs.
Fylingdales staff never locked their cars....but who stood a chance of stealing one in there.

only solution was to recover the vehicle down the road to Slieghts or Pickering, unload and start the car.
always amused me to see the owners face when it started without even lifting the bonnet.

 

[TheBig1]

Well I do have problems the other way round ! The Baby Video system stops my Wifi from working. Either I can check the babies I care in their room and no TV no Internet, OR I Watch TV and have internet!

Guess what I do:Blush: ....


I changed the whole system and came back to WIRED internet and TV LOL!

Done that all day today ! Had to take all the papers and files from one desk and put the whole system in the living room.....and then sort out all the files to put them on the desk in my bedroom .... But ...it's working fine!:thumb:


Frankie

this is a very well known and documented problem frankie. the latest versions of the video senders are a different frequency to get round it

more seriously, if you have an older wireless house alarm, it can be blocked using a baby monitor if you know how they work. much the same way that if you have a wireless reversing camera you occasionally pick up a signal from somebody's security camera as you drive up the road. they all use the same frequency band as used on cheap internet routers so very insecure

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[TheBig1]

as for the original post, there is something else transmitting in the area on a higher frequency if its affecting central locking or alarm systems. maybe police radios or military, but its not internet wifi signals from the site

 

[Addie]

Its possible that some sort of RF interference is to blame, but as already mentioned the WiFi frequencies are so far away from the frequencies used by vehicles locking and alarm systems that its highly unlikely that it is the WiFi networks to blame.

Marjal has both a 2.4Ghz customer and a 5Ghz backbone network across the site which is a pretty standard setup for most campsites in Europe. You're going to experience far more RF interference in a built up area then you will do at Marjal.

Keyfobs, certainly older generations, operate most likely around 418Mhz. In Europe the same bandwidth (410 to 430MHz) is allocated for TETRA which is the bands used by the Emergency Services - so if you was to blame something, blame that (and look for a mast). Its also a frequency ranged by amateur radio (and especially amateur TV!) enthusiasts - although this is unlikely.

In short - there are lots of unlikely culprits, but none of them are more unlikely than WiFi.