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Wireless devices, radio and TV stations will issue emergency messages today, but there isn’t anything to be alarmed about.

The squawky signals from provincial and territorial emergency management systems across the country — except in Nunavut — will be transmitted to test the national public alert system.

The alerts are designed to warn of imminent threats or emergencies, such as floods, tornadoes, fires or Amber Alerts.

READ MORE: Calls for changes to Amber Alert system getting louder

Depending on where you live, the tests will be conducted mid-morning or early afternoon.

The emergency alerts have become a familiar sound since the national public alert system was first tested in early 2018, revealing glitches in several provinces.

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Since January, the Canadian Radio-television and Telecommunications Commission says 125 emergency messages have been issued, warning Canadians of potentially life-threatening situations.

The CRTC said the emergency alerts have been credited with saving lives.

2:19 Emergency services continue to deal with 911 call abuse Emergency services continue to deal with 911 call abuse

Some alert recipients, however, have considered them an annoyance, sparking complaints on social media — and even to 911 operators — that the emergency warnings came too late at night or were targeting the wrong geographic area.

The complaints have prompted often heated debates about their necessity in helping to find missing children or to warn of emergencies.

Pelmorex Corp., which operates the system’s technical infrastructure, says the tests are necessary to ensure the system is working properly and to educate Canadians on what the warning signals look and sound like.

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READ MORE: Thousands sign petition asking for fines against people who call 911 to complain about Amber Alerts

To receive alerts, compatible wireless devices must be equipped with the latest operating software. They must also be connected to an LTE network when the alert is issued.

All wireless devices sold by service providers after April 6, 2019 are required to be capable of issuing the public alerts.

Canadians with compatible devices who don’t receive the test are being asked to contact their wireless service provider.

Here is when the test signals are scheduled to be transmitted:

Alberta 1:55 p.m. MST

British Columbia 1:55 p.m. PST

Manitoba 1:55 p.m. CST

New Brunswick 10:55 a.m. AST

Newfoundland and Labrador 10:55 a.m. NST

Northwest Territories 9:55 a.m. MST

Nova Scotia 1:55 p.m. AST

Nunavut — No test

Ontario 2:55 p.m. EST

Prince Edward Island 12:55 p.m. AST

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Quebec 1:55 p.m. EST

Saskatchewan 1:55 p.m. CST

Yukon 1:55 p.m. PST