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While "call before you dig" and the 8-1-1 phone number is the primary awareness campaign in the United States, Canada has switched to "click before you dig" to emphasize online locate requests and contacting one-call centers virtually rather than calling. [21] [22] August 11 is National Safe Digging Day. [23]
To make all that work correctly, the system allows automatic increases and decreases in transmitter power (for the individual cell phone and for the tower repeater, too) so that only the minimum transmit power is used to complete and hold the call active, "on", and allows the users to hear and be heard continuously during the conversation.
This is a list of full-service television stations in the United States having call signs which begin with the letter W. Stations licensed to transmit under low-power specifications—ex., WOCV-CD, W16DQ-D and WIFR-LD—have not been included.
Passive locating uses signals that occur naturally on some utility lines. This method often fails to locate 60% or so of utility lines, [citation needed] and misidentifying utilities is an associated risk. Active locating, on the other hand, is more accurate. It makes use of signals that the locators generate through a transmitter.
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help.Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance.
In North Carolina, some 300 roads were closed and more than 7,000 people have registered for U.S. Federal Emergency Management Agency assistance, officials said on Monday.
Maidenhead locators are also commonly referred to as QTH locators, grid locators or grid squares, although the "squares" are distorted on any non-equirectangular cartographic projection. Use of the terms QTH locator and QRA locator was initially discouraged, as it caused confusion with the older QRA locator system.
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