Re: 21. Radio wireless alarm systems....

[-pull@shoot]

On Sun, 29 May 2005 07:29:22 +0200, -pull@shoot wrote:

>
>Wireless alarm equipments are unreliable due to they're weak point,
>the radio wireless data communication between sensor and receiver.
>
>Radio waves have well known inconveniences and Radio Frequency
>Interferences (RFI) is one out of them.
>- The problem with RFI is that it can't be avoided and is easily
>  generated on purpose.
>  (See my post 16 Test your wireless alarm...)
>- It muzzles the receiver and block al sensor communication.
>- RFI due to hiss erratic nature can't be detected, at reasonable time
>  span nor as an intruder on purpose generated muzzling signal.
>  All attempts to detect unidentified RFI in a short time span
>  generate multiple false alarms due to "non on purpose" RFI who
>  is allways present and generated by the system sensors themself
>  and due to the other users of the alarm shared frequency!
>
>
>BUT pro's know better and will sell you one; profit goes before your
>safety.
>
>I ask them 2 simple questions to those famous pro's:
>1. How do you explain that wireless is reliable knowing that
>   the radio wave can be detected from the outside and muzzled with
>   a simple low power trancmitter?
>   From what exact type of equipment are you talking about if you
>   pretend that it is reliable.
>2. Where do you get the essential wireless radio connection
>   receiver - transmitters charracteristics from?
>
>Paul