What is an Erlang?
"it is equal to the number of simultaneous calls originated during a specific hourly period"
"it is equal to the number of simultaneous calls originated during a specific hourly period"
Monday, 29 August 2011
What percentage is the reference black level of a horizontal sync pulse?
What percentage is the reference black level of a horizontal sync pulse?
"70%"
What is a device that detects both vertically and horizontally polarized signal simultaneously?
What is a device that detects both vertically and horizontally polarized signal simultaneously?
"orthomode transducer"
What is the channel number of an FM station with 88.1 MHz carrier?
What is the channel number of an FM station with 88.1 MHz carrier?
"201"
What is the purpose of the electromagnetic field which surrounds a travelling wave tube?
What is the purpose of the electromagnetic field which surrounds a travelling wave tube?
"to keep the electrons from spreading out"
Amplitude modulation that vary the carrier amplitude with the modulating signal by passing it through an attenuator work on the principle of
Amplitude modulation that vary the carrier amplitude with the modulating signal by passing it through an attenuator work on the principle of
"Variable Resistance"
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