Latest threads in Electronic Security in UKshow only best voted threads
| Subject | Author | Posted | Replies | |
|---|---|---|---|---|
|
|
I need a circuit that can detect a nearby tuned circuit
Hi Help please... I need a circuit that can detect a nearby tuned circuit... The object with the tuned circuit embedded within it is made to look like a rock The 'rock' is dropped into a detection...
—
|
18 years ago
|
— | |
|
|
29. By programming your alarm system can you damage..?
By programming your system alarm can you damage the programming of your alarm equipment? NO, programming of the alarm system is done by the manufacturer and can't be altered. The so "pompous" called...
—
|
18 years ago
|
— | |
|
|
ADT - 3 year "rolling" contract?!
My wife (when she was my girlfriend) signed up to a 3 year deal when she had a new system installed at her house. When we bought a new house together 6 months later her house purchasers did not want...
14
|
18 years ago
|
14 | |
|
|
28. New readers, RF intruders in wireless alarm systems
Radio Frequency (RF) intruders. The whole RF spectrum is divided and regulated by international committees who define the allowances on each frequency. The Wireless Alarm Systems have free multi user...
10
|
18 years ago
|
10 | |
|
|
27. New Readers Wire less, WH0 believe in it?
WIRELESS alarm systems are unreliable, regardless the brand, during Radio Frequency Interferences (known as RFI in the radio communication world). The week point of wireless is the transmitter /...
—
|
18 years ago
|
— | |
|
|
26. NEWBEES, if possible avoid wireless alarm systems
They are not reliable and are dead on warning when a transmitter operates in a condition who muzzle the wireless alarm system. This is easily done with Radio Transmitters operating: - ON the wireless...
3
|
18 years ago
|
3 | |
|
|
FS : Electrical Parts on eBay
Hi I have some electrical stuff put on eBay. Please go and check if you are interested. Thanks! ProjectGuy1969 1) SIEMENS 3SE3210-1D SIGUARD POSITION (LIMIT) SWITCH ) 2X OMRON Z15GQ-B BASIC SWITCH...
—
|
18 years ago
|
— | |
|
|
Re: 20. RFI is an unavoidable nuisances for wireless alarm systems..
No. You didn't 'show'... you said. Very different thing. By the way, you're stupid :-)
—
|
18 years ago
|
— | |
|
|
25. Newbee? Wireless RFI alarm OWL will hit you..
YOU have a wireless alarm system who has that maintenance pro's "imaginative" Radio Frequency Interference (RFI) detection circuit? Wireless Alarm systems are still unreliable DURRING RFI but... If...
2
|
18 years ago
|
2 | |
|
|
24. RF Interference detection, does it exists on Wireless Alarm System ?
Everybody knows that wireless alarm systems are unreliable during Radio Frequency Interference (RFI) because the transmission path of signals between sensors and wireless receiver is muzzled by an...
3
|
18 years ago
|
3 | |
|
|
22. Who call that junk Spread spectrum in Wireless Alarm Systems..
Regardless of some that try to flood the fish by mentioning unrealized performances of spread spectrum (SS) in wireless alarm systems, regardless the invalid comparisons with military equipment,...
1
|
18 years ago
|
1 | |
|
|
Re: 22. Are you an OLD or a NEW VICTIM of wireless alarm systems
Interference is avoided by repeatingly sending the signal across an FM band comparable in "width" to the FM band on your radio. That's a lot of frequencies to jam or otherwise have interference. One...
8
|
18 years ago
|
8 | |
|
|
20. RFI is an unavoidable nuisances for wireless alarm systems..
I showed that RFI is an unavoidable nuisances for wireless alarm systems in several posts. I had a case who muzzled my wireless alarm system for more than 1 year before i discovered it by accident, no...
2
|
18 years ago
|
2 | |
|
|
Re: 15. Wired / Wireless alarm systems?
Easy give brand and type so that i can believe you. Tel also at what frequency this equipment is operating on. I'm wondering...
2
|
18 years ago
|
2 | |
|
|
VICTIMS of wireless alarm systems
Are you an old or a new VICTIM of wireless alarm systems wrong advertisements and sellers talk? Wireless alarm systems fail during Radio Frequency Interferences (RFI) without warning to the owner and...
—
|
18 years ago
|
— |