The angle between electric and magnetic fields in a waveguide is

Stores the data of all mobile stations that are currently staying in the administrative area of the associated MSC.

The permissible power in kW of stations II-A during nighttime is

What modulation is normally used with digital data?

Use Carson’s rule to compute for the bandwidth that would be required to transmit a baseband signal with a frequency range from 300 Hz to 3 kHz using WBFM with a maximum deviation of 75 kHz.

Total bit rate of a T3 carrier system.

LORAN system has

Standard mismatching in microwave circuits have SWR from

A short-lived aspect of a signal such as the attack and decay of musical notes.

What is the function of a DAC?

The VRB Board is composed of a Chairman, a Vice Chairman and ___ members.

Which of the following LAN topology is the fastest?

In channel 16, the 3.58 MHz color signal is transmitted at the frequency of

A buffer amplifier is

A data-compression scheme that replaces repeated characters or bit patterns with a code indicating the character or pattern and the number of repetitions.

The efficiency of an ideal klystron is closer to

A receiver connected to an antenna whose resistance is 50 ohms has an equivalent noise resistance of 30 ohms. What is the receiver’s noise temperature?

In a CATV system, Head End Processor as RF input/output terminal match should have ___ dB.

Electronic mail and the CCITT X.400 set of recommendations would be handled by which layer of the OSI model?

What type of radiator normally drives a corner reflector?

What is the church dB SPL with speech reinforcement only?

Which of the following operating frequencies is used for the modern LORAN navigational system?

Antennas which are not properly terminated

Listing of date and time of events, programs, equipment, tests, malfunctions and corrections in communications system.

When the modulating frequency is doubled, the modulation index is halved, and the modulating voltage remains constant. The modulation system is

Calculate the color subcarrier frequency for TV channel 11.

What kind of an antenna is used with a PPI radar?

A data highway in LAN, which allows work stations to be connected to a common line where all messages pass stations on the way to their destination.

Iridium satellite system has a mean elevation above Earth for about how many miles?

A transmission line capable of handling high-powered signal is

Modal dispersion is caused by the

Which signal has color information for 1.5 MHz bandwidth?

It is a protocol used to connect the other packet switching network.

In what frequency bands does marine radar operate?

Known in the United States as RS-232 but defines only the functions of its interface circuits.

Calculate the maximum efficiency of an asynchronous communication system using ASCII with seven data bits, one start bit, one stop bit and one parity bit.

A receiver has a sensitivity of 0.5 uV and a blocking dynamic range of 70 dB. What is the strongest signal that can be present along with a 0.5 uV signal without blocking taking place?

A dipole antenna has a radiation resistance of 67 ohms and a loss resistance of 5 ohms, measured at the feed point. Calculate the efficiency.

In a microwave system, the antenna sees a sky temperature of 150K, and the antenna feedline has a loss of 3 dB. Calculate the noise temperature of the antenna/feedline system, referenced to the receiver input.

A province in the Philippines has an area of 3000 km. it has to be covered by cellular mobile telephone service using cells with a radius of 2 km. assuming hexagonal cells, fin the number of cell sites needed.

The telephone network is being converted to digital operation primarily to

One-hundred ninety microbars of pressure variation is equal to

A shorted half-wave line at the operating frequency acts like a(an)

Which type of fiber-optic cable has the least modal dispersion?

What bad electrical effect happens when the switch-hook is opened?

What is proper measurement of average power emitted by a pulsed laser?

Subcarriers that are arranged so that the channels occupying adjacent frequency bands with some frequency space between them is

Quantization noise can be reduced by

A broadcast TV channel has a bandwidth of 6 MHz. Ignoring noise, calculate the maximum data rate that could be carried in a TV channel using a 8-level code and determine the minimum possible signal-to-noise ratio in dB for the calculated data.