37. Can you listen on the wireless alarm frequencies?

Just as long as there is no #4

I really like how he's now taken to "numbering" his posts...

There are bands that require strict occupancy rules. Equipment can only be sold in countries that use those frequencies that abide by the standards. These standards exist for that reason. 868MHz is one such band that has strict usage rules. Any equipment using the band CANNOT transmit on that band for more than 1% of the time. This allows upto 100 other pieces of equipment in the immediate vicinity to use the same band. There are several wireless alarms using this band at the moment and they have superb RFI detection and jamming signal algorithms.

Do you have a receiver who capture the wireless alarm frequencies and did you pay attention to the numerous transmitters who generate "permanent" transmissions on those frequencies?

For example (only a very small sample): Listen to you car key transmission who operate on 434 MHz and see if it is a "burst" or a permanent transmission.. Very informative.. Most car keys have permanent transmission when you keep the button stroked and by consequence disturb wireless alarm systems. Do your wireless alarm system detect it? No of course, it would give numerous false alarms.

After 4 years of endless dribble, we can safely say that Paul's brain is still not immune to RFI. It's time to take the headphones off Paul. Maybe one of us "PROS" can send you a tin foil lined hat to block all the unwanted RFI.

Yes Paul, there is a life beyond RFI...

Jim Rojas

GET A LIFE IDIOT