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#171587 - 12/01/07 12:38 PM Strange Things Happen  
AZSam  Offline
Member
Joined: May 2004
Posts: 55
Scottsdale, AZ USA
Installed new security camera at my firing range which, when triggered, sends RF signal to start DVD recorder. Neighbor,1/4 mile to the south,had his remote starter activate on one of his cars several times. As he knows I have quite a few RF items he mentioned his problem. I checked his receiver frequency and it was identical to my camera. Changed board in camera xmitter to different freq, problem solved.
With so much more RF involved in homes, is cross contamination becoming a problem?







Work Gear for Electricians and the Trades

#171589 - 12/01/07 12:49 PM Re: Strange Things Happen [Re: AZSam]  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
It's certainly something to consider. It's probably best to NEVER leave things at their 'default' or 'factory' settings.

I installed several ceiling fans in a new house. A remote used in one room would often operate fans in several rooms. Changing the settings fixed that.

I was being awakened by my doorbell at the strangest times ... and no one was ever there. It turned out that a paralyzed neighbor was using the same sort of cordless doorbell to signal his nurse. Again, changing the DIP switches solved the problem.


#171593 - 12/01/07 01:41 PM Re: Strange Things Happen [Re: renosteinke]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,099
Estero,Fl,usa
My niece had a baby monitor that was on the same frequency as her neighbor's cordless phone ... and a kinky sort the neighbors were. (lots of phone sex).


Greg Fretwell

#171601 - 12/01/07 03:21 PM Re: Strange Things Happen [Re: gfretwell]  
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 183
UK
Apart from the old analogue cordless phones, and perhaps a cheap doorbell, I would have expected decent remote control systems to use a digital code to avoid mis-operation.
Going into a car park and finding someone elses car unlocking I think very unlikely. It's certainly never happened to me. This isn't down to (just) the frequency, but the need to match the preset code.
I've heard stories of car control systems being blocked by powerful transmitters nearby, simply overloading the receiver, but never of actually operating due to the interference signal.
Is it really a remote start on the car? Sounds potentially dodgy to me! Certainly ought to be protected from operation by stray RF signals.


#171660 - 12/02/07 09:54 PM Re: Strange Things Happen [Re: AZSam]  
Obsaleet  Offline
Member
Joined: Apr 2003
Posts: 362
Pa
I once worked for a company that used the bosses home as our shop. His cordless phone picked up the baby moniter. We listened to a couple of nooners before he figured out which nieghbor it was and told them he had there baby crying or some bull(lol)


Ob


Choose your customers, don't let them choose you.

#171661 - 12/02/07 10:04 PM Re: Strange Things Happen [Re: Obsaleet]  
leland  Offline
Member
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
Two times: Most recent 2 wks ago, working on a friends new house. 1 friend went to leave, hit his remote start (factory Nissan) locked the doors on the 98' Chevy.

1ST, time: 02 chevy 1 ton van, Heading up to a radar site.The seat belt light, and other warning lights started to activate in the vehicle.
Wish I had something more "freaky", But thats that.


#171679 - 12/03/07 06:29 AM Re: Strange Things Happen [Re: leland]  
AZSam  Offline
Member
Joined: May 2004
Posts: 55
Scottsdale, AZ USA
My son-in-law obtains most of the receivers/transmitters that I use around my property. He obtains most from, or through, a company in Enfield, UK. He tells me that the electronics are far superior to the domestic products. In support of this, I have had 0 failures of 17 items with anything he has obtained but 3 failures of 11 w/domestic. My cell phone still causes squealing in my NuTone intercom system if I get too close.


#171685 - 12/03/07 09:27 AM Re: Strange Things Happen [Re: AZSam]  
IanR  Offline
Member
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
Once, I was at my mother's house, I locked my Camaro with my key FOB and my mothers' Chrysler 300 unlocked. Only happened once, though. The rolling codes just happened to be the same at that instant, I guess.


#171721 - 12/04/07 04:38 AM Re: Strange Things Happen [Re: gfretwell]  
hardwareguy  Offline
Member
Joined: Jun 2007
Posts: 50
Texas
Originally Posted by gfretwell
My niece had a baby monitor that was on the same frequency as her neighbor's cordless phone ... and a kinky sort the neighbors were. (lots of phone sex).


HAHA! I wish my calls were that funny! Me, it's just changing WiFi channels because someone has no internet.


#171732 - 12/04/07 02:27 PM Re: Strange Things Happen [Re: hardwareguy]  
SteveFehr  Offline
Member
Joined: Mar 2005
Posts: 1,207
Chesapeake, VA
I remember the old days, when we'd drive down the road punching the garage door opener button, seeing whose doors would start rolling up...


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