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Mystery signal blocking Ottawa door devices
CBC News ^ | 04 Nov 2005

Posted on 11/06/2005 7:03:59 AM PST by cloud8

Many automatic garage doors in Ottawa have suddenly, and strangely, stopped working, due to a powerful radio signal that appears to be interfering with the remote controls that open them.

J.P. Cleroux of Ram Overhead Door Systems says the phenomenon began last weekend.

"It affects a 25-mile radius. That's huge," said Cleroux.

Angolan Ambassador Miguel Puna's operation is one of those affected by the problem. He can no longer open his embassy's electronic gate.

"Not only in this gate, but even other gates, we are having a lot of problems," said Puna. "This could cause security concerns."

Two companies that have plotted the reported problems on maps say they appear to cluster in the Byward Market area just east of Parliament Hill, and a corridor leading southeast from there.

The Door Doctor has received more than 100 calls from irate customers who can't operate their doors using the usual remotes.

The company installs and services Liftmasters, the most popular door opener in North America, which operates by radio frequency.

The signal is transmitted on the 390-megahertz band, which is used by virtually all garage door openers on the continent.

That's the same frequency used by the U.S. military's new state-of-the-art Land Mobile Radio System.

Cleroux said operators have already been warned of this phenomenon by service updates from U.S. manufacturers, who started seeing the same problem around military bases last summer. The strong radio signals on the 390-megahertz band simply overpower the garage door openers.

One technician likened it to a whisper competing with a yell.

"From what we hear, it is the American Embassy that's operating on 390, and they're the only ones who can block it. But I'm not 100 per cent sure, because we're all kind of up in the air until we know exactly what's going on," said Cleroux.

The U.S. Embassy denies any transmissions on that frequency. So does the Canadian military.


TOPICS: Canada; News/Current Events
KEYWORDS: canada; garagedooropeners; stuck
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What's the frequency, Kenneth?
1 posted on 11/06/2005 7:04:00 AM PST by cloud8
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To: cloud8
"The signal is transmitted on the 390-megahertz band, which is used by virtually all garage door openers on the continent. That's the same frequency used by the U.S. military's new state-of-the-art Land Mobile Radio System."

Who's bonehead idea was this?

2 posted on 11/06/2005 7:08:34 AM PST by manwiththehands ("They wanted a Harley, they got a Scooter Libby." -Don Surber)
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To: manwiththehands

The military signal is digitally encrypted and supposedly unbreakable. It now seems to have the secondary benefit of keeping the enemy from opening the garage doors to drive the tanks out of their hardened bunkers.


3 posted on 11/06/2005 7:14:41 AM PST by WilliamWallace1999
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To: cloud8

"The signal is transmitted on the 390-megahertz band, which is used by virtually all garage door openers on the continent.

That's the same frequency used by the U.S. military's new state-of-the-art Land Mobile Radio System."


How widely known was this information before the CBC's loose lips began flapping??


4 posted on 11/06/2005 7:15:15 AM PST by NerdDad (Do Not Sacrifice for Today's Wants That Which You Will Always Need: Honor, Intregrity, Respect)
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To: WilliamWallace1999

It took 15 seconds to blame the Americans.


5 posted on 11/06/2005 7:16:30 AM PST by Eric in the Ozarks
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To: cloud8
Angolan Ambassador Miguel Puna's operation is one of those affected by the problem. He can no longer open his embassy's electronic gate.

"Not only in this gate, but even other gates, we are having a lot of problems," said Puna. "This could cause security concerns."

Mr. Puna should be congratulated on the wisdom of admitting to all of Canada in a CBC news article that the Angolan embassy has security problems. Duh!

6 posted on 11/06/2005 7:17:28 AM PST by The Electrician ("Government is the only enterprise in the world which expands in size when its failures increase.")
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To: cloud8

I took you longer to post this thread than it should have taken to fix the location.


7 posted on 11/06/2005 7:17:42 AM PST by ASA Vet (Those who know don't talk, those who talk don't know.)
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To: Eric in the Ozarks
It took 15 seconds to blame the Americans.
Well, in this case, it seems logical, doesn't it?
8 posted on 11/06/2005 7:19:47 AM PST by Clara Lou
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To: manwiththehands

> Who's bonehead idea was this?

Maybe it's some kind of early warning system :)

Actually I was wondering if Ottawa was experimenting with Broadband over Power Lines (BPL), and that was causing the trouble.


9 posted on 11/06/2005 7:22:29 AM PST by cloud8
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To: cloud8

Space aliens...


10 posted on 11/06/2005 7:23:19 AM PST by null and void (It's kinda fun doing the impossible - Walt Disney)
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To: cloud8

I plugged my old CB into my new linear amp, aimed the beam antennae at Canada, and just look what happens!


11 posted on 11/06/2005 7:24:26 AM PST by MarineBrat (When it rains, New Orleans makes its own gravy.)
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To: NerdDad
How widely known was this information before the CBC's loose lips began flapping??

If the foriegn press knew it, I'd guess any adversary that could use the info already had it.

12 posted on 11/06/2005 7:24:32 AM PST by TN4Liberty (American... conservative... southern.... It doesn't get any better than this.)
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To: manwiththehands
Probably ITU frequency assignments. The military almost never uses frequencies outside of assigned bands.

I'll be dollars to donuts they find some amateur rig responsible, either maliciously or innocently. Roof-top TV antennas with active amplifiers are notorious for oscillating and interfering with television signals. Could be an amateur UHF relay, a single ham or some home owner who bought a "radio shack" roof top amplifier.
13 posted on 11/06/2005 7:25:54 AM PST by Lonesome in Massachussets (NY Times headline: Protocols of the Learned Elders of CBS, Fake but Accurate, Experts Say)
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To: manwiththehands
Probably ITU frequency assignments. The military almost never uses frequencies outside of assigned bands.

I'll be dollars to donuts they find some amateur rig responsible, either maliciously or innocently. Roof-top TV antennas with active amplifiers are notorious for oscillating and interfering with television signals. Could be an amateur UHF relay, a single ham or some home owner who bought a "radio shack" roof top amplifier.
14 posted on 11/06/2005 7:25:55 AM PST by Lonesome in Massachussets (NY Times headline: Protocols of the Learned Elders of CBS, Fake but Accurate, Experts Say)
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To: MarineBrat

I knew it was you!


15 posted on 11/06/2005 7:26:34 AM PST by Lonesome in Massachussets (NY Times headline: Protocols of the Learned Elders of CBS, Fake but Accurate, Experts Say)
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To: cloud8; All

Howdy all. It probably is us. Just talked to a friend of mine with the border patrol. It is probably them and not the military. This new system works like a private cell service. Think Nextel walkie-talkies not available to the general public. System digitally encrypts voice over old analog frequencies. They have constructed "cell tower" all along the section of Texas border where I live. Now the coyotes smuggling wets can't monitor them with standard scanners. Without the digital key code it is all just gibberish.

No, it is not a widely held secret. Everyone on our southern border knows about it.

PS- Our boder patrol a great individuals led by PC buffoons at the advisory level. Take off the administrative cuffs imposed by Washington and they could slow the infiltration WAY DOWN. Bust employers like they used to before Clintoon halted the practice.

Just needed to get that off my chest. Wheww.


16 posted on 11/06/2005 7:28:46 AM PST by WilliamWallace1999
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To: Clara Lou
Well, in this case, it seems logical, [to blame the Americans] doesn't it?

No. Occam's razor suggests thousands of more likely possibilities. Paranoia suggests the neighbor to the South.

17 posted on 11/06/2005 7:29:01 AM PST by Lonesome in Massachussets (NY Times headline: Protocols of the Learned Elders of CBS, Fake but Accurate, Experts Say)
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To: cloud8

I'll bet Bush did it :)


18 posted on 11/06/2005 7:31:23 AM PST by Buffettfan
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To: manwiththehands

It's not exactly the same frequency, it's just that the more powerful transmission bleeds over onto civilian frequencies, disrupting them. The door companies have many other bands they could be using, and could retofit their systems for IR or 5 ghz and alleviate the problem. The companies involved in wireless devices know exactly what frequencies are used for military, state,local, aircraft and civilian use and which ones they can use. What's scary is no matter how high tech we think our security is, it only takes a low tech problem to circumvent it. Arm yourself, put a fence up, get a German Shepard. I have yet to see the batteries die on a 12 gauge, or a solar flare affect my dog's bite...


19 posted on 11/06/2005 7:31:58 AM PST by Rocketwolf68
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To: NerdDad
How widely known was this information before the CBC's loose lips began flapping?

FR knew about it last year - Here, here, and here.

20 posted on 11/06/2005 7:38:54 AM PST by mollynme (cogito, ergo freepum)
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