Re: 12. Manufacturers have NO SPEC. on the Wireless equipment, is that normal ?

[-pull@shoot]

On Sat, 07 May 2005 10:06:44 +0200, -pull@shoot wrote:

>
>Manufacturers technical specification data allow you to know the
>quality of the different proposed equipment's and brands.
> Ask for them.
>
>How can professional keep telling you that the equipment they sell is
>reliable when manufacturers don't produce a specification clarifying
>the Radio Frequency Interference (RFI) aspect of wireless alarm
>systems who provide you with a warranty close?
>
>- Why do manufacturers not publish receiver quality as for example:
>bandpass (6db & 60db points), image frequency attenuation at 2xIF
>frequency, Intermodulation figures, IF signal rejection data, outbound
>frequency worst attenuation figure, and ++ in order to proof that
>they're system is of good quality and well designed to avoid "utmost"
>possible RFI?
>
>- Why do manufacturers simply not pretend/specify based on
>measurements, with technical data as a support, that they're system
>detect RFI at a specified time span and state what type of detection
>they use to avoid false alarms?
>
>Why, WHY?
>
>When you purchase an electronic equipment, a audio amplifier system
>for instance, do you not look at the specification to see what's the
>power, the amplifier audio response bandwidth and distortion, the
>speaker quality even if you don't know all the finesses of it?
>
> The receiver/sensor data transmission is the MAIN DIFFERENCE between
>WIRELESS and WIRED alarm systems, WHY IS THERE NO MANUFACTURER SPEC.
>AVAILABLE on the subject?
>
> ASK FOR RECEIVER/TRANSMITTER SPEC.'S
>- About the sensor/control panel wireless data loop,
>- That the manufacturers state the RFI reliability they are
>warranting, compare brands and decide.
> Don't let so-called pro's bluff you with empty marketing slogans!
>
>    Newbees, don't rely on wireless alarm stuff, go wired.
>
>Paul