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In radio electronics, a null is a direction in an antenna's radiation pattern where the antenna radiates almost no radio waves, so the far field signal strength is a local minimum. Nulls occur because different parts of an antenna radiate radio waves of different phase. In directions at which the antenna radiates equal amplitude radio waves of ...
It can be combined with the "negative" signal, spoken or written as NEGAT, to say "NEGAT Bravo Zulu" to convey "not well done" for a given action. "BZ" is widely used as shorthand vernacular amongst members of the sea services (i.e., navies, marines, and those coast guards that are military services as opposed to civilian agencies).
The signal is used to indicate that the destination is unreachable, either because all circuits (trunks) are busy, the called number is out of service, the call is unroutable, or sometimes that an invalid code has been dialed. [1]
Signal Weak Unable to copy - change location Unreadable 10-2 Receiving well. Signals good Signal Good — 10-3 Stop transmitting. Disregard last information Stop transmitting Stop Transmitting 10-4 Acknowledgement. Message received Acknowledgement Affirmative (Ok) Roger Roger/ Affirmative 10-5 Relay. Relay (To) Relay 10-6 Busy. Busy, stand by
An analog signal is any continuous signal for which the time-varying feature of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal. For example, in an analog audio signal , the instantaneous voltage of the signal varies continuously with the sound pressure .
WEAK WITH INTERFERENCE means the signal strength is weak and there is also interference from another signal. WEAK AND UNREADABLE means Unable to copy, a relay is required; The omission of comment on signal strength and readability, by responding only with the proword ROGER, is understood to mean that reception is LOUD AND CLEAR. If reception is ...
That's the one-word message that German astronaut Paula Groth (Peri Baumeister) hears being repeatedly transmitted through space in sci-fi thriller The Signal, now streaming on Netflix.
This signal soon became known as SOS because it has the same dash-dot sequence as the letters with the gaps between them removed, and in fact is properly written SOS, with an overbar, to distinguish it from the three individual letters [citation needed]. In contrast, CQD is transmitted as three distinct letters with a short gap between each ...