How to force 32XP-W to use different frequency

[01cooperl]

I'm getting the RF jamming notifications on my Texecom 64W. Never had a problem since installing three years ago. Replaced batteries but still have the same issue. I heard that whilst Texecom cant hop between frequencies it is possible to delete the devices off and relearn the devices on a slightly different frequency.

Do I just unlearn and then relearn the devices after a few mins, or is there something else I need to do in order for the panel to re-sniff the quietest frequency/network number?


Thanks

 

[sparkymarka]

Have you checked the other items in your house for the source of jamming ? Eg wireless heating programmer with low batteries ect ….

 

[Sally2000]

Depends entirely on the nature of the interference.

If it's another proprietary signalling device in the same frequency band, both it and the Texecom will be quite capable of avoiding each other. The Texecom in certainly very clever in its in-band interference protection. I've seen the Texecom signal on a spectrum analyser and there is ample capacity to avoid other signals.

If the jamming source is electrical noise from a faulty electrical device, it will have equal effect across the whole band used by the Texecom.

 

[xm77]

Failing or near failing switched mode power supplies are notorious for mucking up stuff as they broadcast "noise"
Sadly these days instead of transformers virtually all wall-wart type power supplies for mobiles, routers, etc are of switched mode types

 

[secureiam]

It isn't easy.

So when you learn a device to the panel, the wireless network is assigned.

This is supposed to represent the best channel currently available at the time other devices learn on to that same network.

Been a while since I last did anything with this so hooked up an old elite panel with built in wireless expander.

And engineers keypad on the expander, more modern Elite panels don't have the engineers keypad connection available.

so I learn on a device, I can see using the engineers keypad on the expander its Network 28.

I do a series of deletes and relearns, checking the wireless network every time.

Had 2 on network 29 and one on network 31. So can see the network has changed.

So looked at this panel via wintex and ricochet monitor (available Elite V2 with V2 plus wireless expander), and in ricochet monitor you can see the wireless network is displayed, this means you can check it versus what you had originally even if the engineers keypad on the wireless expander part of the board is unavailable.

What I cant tell you is how many networks are available or how they are distanced wrt to frequency changes between each network.

So the question is what networks have you confirmed are having issues.

The other thing it is potentially possible, to hit a quiet spot and be on the same network that is having issues, or the jamming is spread over a wide range.


If this seems complicated don't have much time at the minute and its a bit rushed so apologies.

 

[01cooperl]

Ok I successfully unlearnt the devices and then the wireless expander changed network number on its own then relearnt the devices all ok. However the next day... I got another RF jamming notification from the Texecom app. Not sure what to do now. I've got a feeling it's due to nextdoor either having some new wireless router/repeater. Do I just have to live with it? The system has been installed and working fine for over 3 years prior to this.

 

[bernardgreen]

Blocking and jamming are different.

Blocking happens when the channel is overloaded with legal devices trying to communicate. Devices are not able to communicate because there is no free time left on that channel

Jamming is intentional and illegal transmission of a continuous signal on the frequency with the intention to prevent the use of the channel by legal devices

A legal ( compliant with the regulations ) device should not transmit for more that 10% of the time leaving 90% of the time for other devices to use the channel. On some frequencies the limit is 1% of the time. Equipment should be designed to tolerate having to wait until the channel is clear before they start communicate.

I have yet to find a document which stipulates the time period, it would seem that transmitting continuously for 1 hour and then being silent for 9 hours could be compliant.

 

[secureiam]

In order to find a free channel/ network you would have to attempt a learn during the period the system is being jammed.

Even then its not guaranteed only a few systems can frequency hop (something that has been requested years ago for Texecom but has never happened), so that it tries a different channel to communicate back.

You have to either find the source and get it resolved or try and find a free channel

 

[bernardgreen]

You have to either find the source and get it resolved or try and find a free channel

Finding the source requires special equipment and then only if the source is a non compliant device on a Licence Exempt frequency can enforcement be considered,

In some areas the occupancy of Licence Exempt frequencies is approaching the theoretical limit of use by compliant systems. One non-compliant device can occupy the frequency to the extent that is becomes all but unusable due to the blocking from the rogue device and the increased traffic from compliant devices whose data packets are corrupted and have to be repeated. Data packets are corrupted when the rogue device starts to transmit without checking that no other device is transmitting on the frequency

 

[secureiam]

In my experience specialist equipment would make it easier but not essential to finding the source.

as for legally enforcing I can’t comment but tend to find most people are happy to help if it also resolved there usually failing equipment

isn’t easy process