wireless router

[securit]

Hi, just purchased alarm, can anyone tell me if my wireless router will effect system as its wirefree, ta

 

[yaleguy]

Hi, just purchased alarm, can anyone tell me if my wireless router will effect system as its wirefree, ta

No , they will not intefere if kept more than a metre apart.

Do not have the control panel and the wirefree router too close to each other as they can conflict if within a metre of each other. Having each one from a seperate phone socket is preferable. Radio phones are fine.

 

[securit]

Hi, just purchased alarm, can anyone tell me if my wireless router will effect system as its wirefree, ta

Hi just had email from yale, they assured me (no problem with wireless router as yale products transmit on 433,92mhz, and routers work on 2,4ghz, and no prob how close control box is to router.)

Which is good news for me as the only place I can connect power and phone line is right next to router, so if yale are wrong they will be hearing from me,

Let you know how I get on,

 

[yaleguy]

Hi, just purchased alarm, can anyone tell me if my wireless router will effect system as its wirefree, ta

Hi just had email from yale, they assured me (no problem with wireless router as yale products transmit on 433,92mhz, and routers work on 2,4ghz, and no prob how close control box is to router.)

Which is good news for me as the only place I can connect power and phone line is right next to router, so if yale are wrong they will be hearing from me,

Let you know how I get on,

I know Yale reccomend not having control panels or sirens or devices within 1 metre of each other.
Although I have generally never had any wireless interuption problems before in one singular case I did have a very strange situation where the devices would not communicate with the panel. After trying new devices-sirens-etc looking for a solution I had to do the test to eliminate the router and immediately I moved the panel away from the router the system worked as normal and has done ever since. So although Yale tell you it is not possible I can say with some surety that it actually has but on only one occasion. this may have had less to do with the actual frequency of the router and more to do with the power it was transmitting at.
You will probably be fine as have 99% of the installations I have managed.

 

[bernardgreen]

Does the Yale system use superheterodyne technology in the radio receivers ? Or do they use super regenerative technology ?

One is far less prone to being affected by frequencies not intended for it. The other can be falsed or jammed by almost any strong signal in the aerial.

When considering radio interference remember that the transmissions from mobile phones can break through into audio systems and affect the display on some types of monitor and TV screens if the phone is close to the equipment.

 

[drgl]

When considering radio interference remember that the transmissions from mobile phones can break through into audio systems and affect the display on some types of monitor and TV screens if the phone is close to the equipment.

In tne early days of mobiles i experienced that but not seen if for years??

 

[yaleguy]

Does the Yale system use superheterodyne technology in the radio receivers ? Or do they use super regenerative technology ?

One is far less prone to being affected by frequencies not intended for it. The other can be falsed or jammed by almost any strong signal in the aerial.

When considering radio interference remember that the transmissions from mobile phones can break through into audio systems and affect the display on some types of monitor and TV screens if the phone is close to the equipment.

Radio system 433.92MHz AM
Integral transmitter and super
heterodyne receiver with
jamming detection

 

[Europlex]

Don't use your electric drill near the Router, it won't like it

 

[bernardgreen]

Radio system 433.92MHz AM
Integral transmitter and super
heterodyne receiver with
jamming detection

And the out of band rejection ratio for the receiver is ?
And the in band 6 db point is ?
And the image frequency rejection ratio is ?

Without this information it is not possible to calculate what power of nearby transmitter on a different frequency will be ignored by the receiver.

And the jamming we have talked about before. There is no point in detecting jamming if the only possible response to being jammed is to sound the alarm.

 

[yaleguy]

Radio system 433.92MHz AM
Integral transmitter and super
heterodyne receiver with
jamming detection

And the out of band rejection ratio for the receiver is ?
And the in band 6 db point is ?
And the image frequency rejection ratio is ?

Without this information it is not possible to calculate what power of nearby transmitter on a different frequency will be ignored by the receiver.

And the jamming we have talked about before. There is no point in detecting jamming if the only possible response to being jammed is to sound the alarm.

For the purposes of this post the calculations and technical brief you have specified is not really necessary.

The poster is specifically mentioning a wireless router in a domestic environment and therefore broad brush experience will give an answer. My own personal experience is that on only one occasion has a wireless router affected a wireless alarm and it was due purely to the proximity of the router and the control panel. Yale themselves suggest a 1m clear zone from the control panel. In the case of the router that was affecting the system I had experience of perhaps the router was of a particular specification to transmit a stronger signal to reach a wider area. I didn't ask as the solution was to move the control panel into another room and use a different socket as the entry exit was managed by a remotw keypad anyway.

As for what should actually happen in the event of jamming.

Why would a thief want to jam a signal?
To prevent the sensors relaying a signal to the panel and setting off an alarm.

If jamming sets of the alarm anyway then he has failed his objective and cannot enter the home incognito.

 

[roberta1000]

Oh for goodness sake - this sort of pontificating is bound to be useful isn't it?

And the out of band rejection ratio for the receiver is ?

For a tuned frequency about 6x less than the interfering one what do you think it's likely to be eh?

And the in band 6 db point is ?

For the interfering signal again do you really think it is likely to be anything at all (given that it is about 6x HIGHER in frequency?

And the image frequency rejection ratio is ?

Again, for a fundamental 6x above the tuned frequency what do you think this is likely to actually amount to?

Without this information it is not possible to calculate what power of nearby transmitter on a different frequency will be ignored by the receiver.

Do you really think that maximum tolerable Tx power can be inferred from the above without knowledge of aerials, lobes etc. etc.?

Do you honestly believe that any reputable make of kit in these times is going to be bothered at 1m when their operating frequencies are so distant and not harmonically related or that the manufacturers overlook such obvious details?

More chance (really!!) of being bothered by a garage door opener.

ISTM that this forum is determinedly unhelpful to most questioners.

 

[bernardgreen]

Wireless propagation and related interference problems are as much a black art as they are a science. I spent 12 years working in radio communications designing control equipment.

It is not good for the original questioner for someone to make a definate statement that X will not interfere with Y when that is an opinion based only on some limited experience of X and Y being used in close proximity without apparent problems arising. There may be many situations where X and Y did not work in close proximity that were never known about.

A sensible assessment of the likelyhood of trouble free operation can only be made if the parameters of both X and Y are known.

 

[drgl]

I think someone, to be frank, is taking the **** on here. The item is question would have to be tested, they work(fact) despite what some wish for on here.

 

[roberta1000]

Wireless propagation and related interference problems are as much a black art as they are a science. I spent 12 years working in radio communications designing control equipment.

After well over 30 years in the field professionally (and still an active radio amateur) I can say 'piffle' to that. And I have designed many dozens of TX/RX sets. The likelihood of interference to a 433MHz system from a low-powered 2.4GHz system several feet away is essentially nil and the equipment in question is of course tested for just this kind of situation.

All aside from simple jamming of course as Yaleguy mentioned above which you're bound to get with anything if you manage to get things squeezed close enough together but that's not the same issue at all.

 

[yaleguy]

It is not good for the original questioner for someone to make a definate statement that X will not interfere with Y when that is an opinion based only on some limited experience of X and Y being used in close proximity without apparent problems arising.

I didn't actually say that,

I said that it has happened to me on one occasion out of hundreds but was solved by simply moving the devices apart. I never made a definate statement that they would not intefere.