Communications Engineering Coaching Materials: Section 4 Module 6

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This is the Section 4 Module 6 of the compiled Communications Coaching Materials taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies (EST), Communications Books, Journals and other Communications References. This particular Coaching Notes in Communications Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.

Communications Engineering Coaching: Section 4 Module 6

Silver Bromide	Crystalline added to achieve low loss, long wavelength in fiber optics
Skip Distance	Returned to earth
Slow Fading	Mobile passing behind a building
SMB	4 GHz with snap‐on connector
Solitons	Single pulses that can travel through a medium with no dispersion
Sporadic E	Form of propagation that can arise with little warning, and enable radio frequencies of 150 MHz and more to travel over distances of a thousand kilometers and more.
SSB+C	Poor and low frequency response, complex transmission
SSB‐SC	Has excellent spectrum efficiency. Best modulation in transmitter
STACKED BEAM ARRAY
Stacked Beam Array	Emitting narrow beam stacked
Stalo	highly stable local radio frequency
Star Coupler	Configuration of M x N (M ‐ no. of inputs, N ‐ no. of outputs)
Step Index fiber	Optical fiber whose core has a uniform refractive index, continuous, does not change
Straight Tip (ST) connector	Uses bayonet locking system
Stutter	Unwanted black and white lines
Subcommutation	Additional channel to individual channels
Subsciber’s Channel (SC) connector	Uses push/pull locking system
Successive approximation	Medium to high‐speed application
Sudden Ionospheric Disturbance (SID)	Layer D
Superluminiscent diode	A lead use in fiber optic communications with the following disadvantages: nonlinear power current characteristics, high temperature sensitivity, and low reliability.
Supernet	Combinations of two or more networks
Surface‐Emitting LED (Diode?)	Most efficient up to 250 Mbps
TACS	Introduced in mid 1980s and operates in 900 MHz band
Tactical Frequency	Military unit used for tactical mission
Telephone Application Programming System (TAPS)	A system that connects PC directly to the telephone line.
Terminal room	Associated with a central office where distribution frames and relay switch are located
Thin‐film fiber‐based DWDM	Small figure of merit
Third degree burn	RF burn
Tight Buffered Cable Design	Used in intrabuilding
To decrease deionization time	Purpose of water vapor in Transmit‐Receiver (TR) tube
To detect the Doppler shift of the receive signal	In Doppler radar, there should exist a relationship between the transmitted frequency and reference frequency. What is the purpose of this relationship?
Toll Line	Connects different exchanges
Tree Coupler	Splits input to two or more output
Trimmer	Variable capacitor place in parallel with ganged capacitors acts as ____
Trombone	When the called party is in the different home network and another caller from one country …
Trunking Gain	The more channels on the pool, the greater the efficiency
User datagram protocol	Send and receive datagram and use in broadcasting in a network
V. 29 and V.32	In telephone system, which of the following have the same bit rate?
V.41	Complete definition of ARQ
Very good and good	Fresh water and sea water
Wiegand Interface	Connections of swipe cards to other electronic entry system
WIEGAND PROTOCOL	Protocol used in card readers
Wiegand Protocol	De facto wiring use in card reader
Wireless fiber	Fastest among the short range
X 3.28	ADCCP
X.121	DNIC
YIQ model	Used in conventional video (NTSC) system
Zepp antenna	Most efficient to use in 10 GHz signal
π/4 DQPSK	Modulation used in Bluetooth V.2 + EDR
	Average in‐channel return loss of DVB‐T

Complete List of Communications Engineering Coaching Materials

Communications Engineering Coaching Materials

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