In what range of frequencies are most omnidirectional horizontally polarized antennas used? A. VHF, UHF B. VLF, LF C. SH, EHF D. MF, HF

In what range of frequencies are most omnidirectional horizontally polarized antennas used?
A. VHF, UHF
B. VLF, LF
C. SH, EHF
D. MF, HF
by

1 Answer

Answer :

A. VHF, UHF
by

Related questions

Where does the AM broadcast band located in the spectrum band? A. HF band B. VHF band C. LF band D. MF band

Description : Where does the AM broadcast band located in the spectrum band? A. HF band B. VHF band C. LF band D. MF band

Last Answer : D. MF band

Which frequency band is the standard AM radio broadcast? A. HF B. UHF C. MF D. VHF

Description : Which frequency band is the standard AM radio broadcast? A. HF B. UHF C. MF D. VHF

Last Answer : C. MF

Troposheric scatter uses the frequencies in the ________ band. A. VLF B. UHF C. VHF D. UF

Description : Troposheric scatter uses the frequencies in the ________ band. A. VLF B. UHF C. VHF D. UF

Last Answer : B. UHF

Tropospheric scatteris usedwith frequenciesinthe followingrange: a. HF b. VHF c. UHF d. VLF

Description : Tropospheric scatteris usedwith frequenciesinthe followingrange: a. HF b. VHF c. UHF d. VLF

Last Answer : c. UHF

Which frequency band is a wavelength of 1200m? a. UHF b. LF c. HF d. MF

Description : Which frequency band is a wavelength of 1200m? a. UHF b. LF c. HF d. MF

Last Answer : b. LF

Which band does channel 14 of the television channel belong?A. High VHF band B. EHF band C. UHF band D. Low VHF band

Description : Which band does channel 14 of the television channel belong? A. High VHF band B. EHF band C. UHF band D. Low VHF band

Last Answer : C. UHF band

Which frequency bands can be refracted during the day by the D layer? A. VLF B. MF C. LF D. Both VLF and LF

Description : Which frequency bands can be refracted during the day by the D layer? A. VLF B. MF C. LF D. Both VLF and LF

Last Answer : D. Both VLF and LF

What frequency band is referred to as the metric waves? A. VHF B. UHF C. HF D. SHF

Description : What frequency band is referred to as the metric waves? A. VHF B. UHF C. HF D. SHF

Last Answer : A. VHF

When antennas are closed to the ground, _______ polarization is ideal A. horizontally polarized B. vertically polarized C. circularly polarized D. both A and B

Description : When antennas are closed to the ground, _______ polarization is ideal A. horizontally polarized B. vertically polarized C. circularly polarized D. both A and B

Last Answer : B. vertically polarized

What is the channel spacing for MF-HF voice frequencies? A. 2.8 kHz B. 500 Hz C. 3.5 kHz D. 3 kHz

Description : What is the channel spacing for MF-HF voice frequencies? A. 2.8 kHz B. 500 Hz C. 3.5 kHz D. 3 kHz

Last Answer : D. 3 kHz

The frequency band of the ILS glidepath is: a. UHF b. VHF c. SHF d. VLF

Description : The frequency band of the ILS glidepath is: a. UHF b. VHF c. SHF d. VLF

Last Answer : a. UHF

In what frequency band is the ATIS normally broadcasted? a. LF b. HF c. ADF d. VHF

Description : In what frequency band is the ATIS normally broadcasted?  a. LF  b. HF  c. ADF  d. VHF

Last Answer : d. VHF

In what frequency band is the ATIS normally broadcasted? a. LF b. HF c. ADF d. VHF

Description : In what frequency band is the ATIS normally broadcasted? a. LF b. HF c. ADF d. VHF

Last Answer : d. VHF

Discone radiation pattern is ______. A. omnidirectional/vertical polarized B. unidirectional C. bidirectional D. figure of eight

Description : Discone radiation pattern is ______. A. omnidirectional/vertical polarized B. unidirectional C. bidirectional D. figure of eight

Last Answer : A. omnidirectional/vertical polarized

The effect of adding parasitic elements of a Hertz dipole is to A. make the antenna more omnidirectional B. reduce its resonant frequency C. increase the antenna’s power gain D. All of these

Description : The effect of adding parasitic elements of a Hertz dipole is to A. make the antenna more omnidirectional B. reduce its resonant frequency C. increase the antenna’s power gain D. All of these

Last Answer : C. increase the antenna’s power gain

Stacking antennas at various angles results in A. a more omnidirectional reception B. a more unidirectional reception C. a more omnidirectional reception D. an overall reception signal increase

Description : Stacking antennas at various angles results in A. a more omnidirectional reception B. a more unidirectional reception C. a more omnidirectional reception D. an overall reception signal increase

Last Answer : A. a more omnidirectional reception

Channel 7 of the regular television channel belongs to which band? A. Low VHF band B. High VHF band C. Low UHF band D. High UHF band

Description : Channel 7 of the regular television channel belongs to which band? A. Low VHF band B. High VHF band C. Low UHF band D. High UHF band

Last Answer : B. High VHF band

TV channels 2, 4 and 5 are known as ________. A. Mid band UHF B. Low band UHF C. High band VHF D. Low band VHF

Description : TV channels 2, 4 and 5 are known as ________. A. Mid band UHF B. Low band UHF C. High band VHF D. Low band VHF

Last Answer : D. Low band VHF

Two or more antennas separated by 9 wavelengths are used. A. Hybrid diversity B. Space diversity C. Polarized diversity D. Frequency diversity

Description : Two or more antennas separated by 9 wavelengths are used. A. Hybrid diversity B. Space diversity C. Polarized diversity D. Frequency diversity

Last Answer : B. Space diversity

What is the gain of four identically polarized antennas stacked one above the other and fed in phase? A. 3 dB over the gain of one antenna B. 10 dB over the gain of one antenna C. 4 dB over the gain of one antenna D. 6 dB over the gain of one antenna

Description : What is the gain of four identically polarized antennas stacked one above the other and fed in phase? A. 3 dB over the gain of one antenna B. 10 dB over the gain of one antenna C. 4 dB over the gain of one antenna D. 6 dB over the gain of one antenna

Last Answer : D. 6 dB over the gain of one antenna

The extremely high frequency (EHF) band is in the radio spectrum range of _______. A. 30 to 300 kHz B. 30 to 300 GHz C. 3 to 30 MHz D. 3 to 30 GHz

Description : The extremely high frequency (EHF) band is in the radio spectrum range of _______. A. 30 to 300 kHz B. 30 to 300 GHz C. 3 to 30 MHz D. 3 to 30 GHz

Last Answer : B. 30 to 300 GHz

An ungrounded antenna near the ground A. acts as a single antenna of twice the height B. is unlikely to need an earth mat C. acts as antenna array D. must be horizontally polarized

Description : An ungrounded antenna near the ground A. acts as a single antenna of twice the height B. is unlikely to need an earth mat C. acts as antenna array D. must be horizontally polarized

Last Answer : C. acts as antenna array

The antenna radiates _____ polarized waves when the transmitter antenna is horizontally installed. A. Vertically B. negatively C. horizontally D. circularly

Description : The antenna radiates _____ polarized waves when the transmitter antenna is horizontally installed. A. Vertically B. negatively C. horizontally D. circularly

Last Answer : C. horizontally

A horizontal antenna is _____. A. vertically polarized B. horizontally polarized C. centrally polarized D. circularly polarized

Description : A horizontal antenna is _____. A. vertically polarized B. horizontally polarized C. centrally polarized D. circularly polarized

Last Answer : B. horizontally polarized

What is a device that detects both vertically and horizontally polarized signals simultaneously? A. Orthomode transducer B. Crystal detector C. Optoisolator D. Isomode detector

Description : What is a device that detects both vertically and horizontally polarized signals simultaneously? A. Orthomode transducer B. Crystal detector C. Optoisolator D. Isomode detector

Last Answer : A. Orthomode transducer

What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth. B. The magnetic field is parallel to the earth. C. Both the electric and magnetic fields are horizontal D. Both the electric and magnetic fields are vertical

Description : What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth. B. The magnetic field is parallel to the earth. C. Both the electric and magnetic fields are horizontal D. Both the electric and magnetic fields are vertical

Last Answer : A. The electric field is parallel to the earth.

What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth B. Both the electric and magnetic fields are vertical C. Both the electric and magnetic fields are horizontal D. The magnetic fields is parallel to the earth

Description : What is meant by referring to electromagnetic waves as horizontally polarized? A. The electric field is parallel to the earth B. Both the electric and magnetic fields are vertical C. Both the electric and magnetic fields are horizontal D. The magnetic fields is parallel to the earth

Last Answer : A. The electric field is parallel to the earth

An electromagnetic wave is ________ polarized when the electric field lies wholly in one plane containing the direction of propagation. A. Horizontally B. Linearly C. Circularly D. Vertically

Description : An electromagnetic wave is ________ polarized when the electric field lies wholly in one plane containing the direction of propagation. A. Horizontally B. Linearly C. Circularly D. Vertically

Last Answer : B. Linearly

______ is a device that detects both vertically and horizontally polarized signals simultaneously. A. Crystal B. Orthomode transducer C. Light transducer D. Optoisolator

Description : ______ is a device that detects both vertically and horizontally polarized signals simultaneously. A. Crystal B. Orthomode transducer C. Light transducer D. Optoisolator

Last Answer : B. Orthomode transducer

A horizontal antenna is A. centrally polarized B. vertically polarized C. horizontally polarized D. perpendicularly polarized

Description : A horizontal antenna is A. centrally polarized B. vertically polarized C. horizontally polarized D. perpendicularly polarized

Last Answer : C. horizontally polarized

The VLF and LF bauds use .............. propagation for communication. (A) Ground (B) Sky (C) Line of sight (D) Space

Description : The VLF and LF bauds use .............. propagation for communication. (A) Ground (B) Sky (C) Line of sight (D) Space

Last Answer : Answer: A Explanation: VLF (Very Low Frequency) LF (Low Frequency) In general there are three type of propagation.1.Ground Propagation 2.Sky propagation 3.Line-of-sight propagation ... portion of the atmosphere. These low-frequency signals travel in all directions from the transmitting antenna.

Space diversity transmission means transmitting and receiving on _______. A. Two or more antennas operating on two different frequencies B. Two or more identical frequencies C. Two or more antennas operating on the same frequency D. Two or more different frequency

Description : Space diversity transmission means transmitting and receiving on _______. A. Two or more antennas operating on two different frequencies B. Two or more identical frequencies C. Two or more antennas operating on the same frequency D. Two or more different frequency

Last Answer : C. Two or more antennas operating on the same frequency

Space diversity transmission means transmitting and receiving on A. two or more antennas operating on two different frequencies B. two or more identical frequencies C. two or more different frequencies D. two or more antennas operating on the same frequencies

Description : Space diversity transmission means transmitting and receiving on A. two or more antennas operating on two different frequencies B. two or more identical frequencies C. two or more different frequencies D. two or more antennas operating on the same frequencies

Last Answer : D. two or more antennas operating on the same frequencies

What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Description : What range of frequencies are usually referred to as the Ultra High Frequency (UHF) Band? w) 3 to 30 Mega Hertz x) 30 to 300 Mega Hertz y) 300 to 3,000 Mega Hertz z) 30,000 to 300,000 Mega Hertz

Last Answer : ANSWER: Y -- 300 to 3,000 MEGA HERTZ

What range of frequencies are usually referred to as the UHF Band? w) 3 to 30 Megahertz x) 30 to 300 Megahertz y) 300 to 3,000 Megahertz z) 30,000 to 300,000 Megahertz

Description : What range of frequencies are usually referred to as the UHF Band? w) 3 to 30 Megahertz x) 30 to 300 Megahertz y) 300 to 3,000 Megahertz z) 30,000 to 300,000 Megahertz

Last Answer : ANSWER: Y -- 300 TO 3,000 MEGAHERTZ

Frequencies in the UHF range propagate by means of

Last Answer : Frequencies in the UHF range propagate by means of space wave.

The full range of VHF frequencies used for communication is:

Description : The full range of VHF frequencies used for communication is:

Last Answer : 118.0 to 136.975

The full range of VHF frequencies used for communications is: a. 3 to 30 MHz b. 88 to 108 MHz c. 108.0 to 139.95 MHz d. 118.0 to 136.975 MHz

Description : The full range of VHF frequencies used for communications is: a. 3 to 30 MHz b. 88 to 108 MHz c. 108.0 to 139.95 MHz d. 118.0 to 136.975 MHz

Last Answer : d. 118.0 to 136.975 MHz

The full range of VHF frequencies used for communications is: a. 3 to 30 MHz b. 88 to 108 MHz c. 108.0 to 139.95 MHz d. 118.0 to 136.975 MHz

Description : The full range of VHF frequencies used for communications is: a. 3 to 30 MHz b. 88 to 108 MHz c. 108.0 to 139.95 MHz d. 118.0 to 136.975 MHz

Last Answer : d. 118.0 to 136.975 MHz

Assuming a UHF frequency range of 405.0125 MHz to 405.0875 MHz at 25 kHz channeling plan, how many channels can you produce? A. 2.5 ch. B. 2 ch. C. 4 ch. D. 3 ch.

Description : Assuming a UHF frequency range of 405.0125 MHz to 405.0875 MHz at 25 kHz channeling plan, how many channels can you produce? A. 2.5 ch. B. 2 ch. C. 4 ch. D. 3 ch.

Last Answer : D. 3 ch.

What is the frequency range of an aircraft’s Very High Frequency (VHF) communications? A. 118.000 MHz to 136.975 MHz (worldwide up to 151.975 MHz) B. 108.000 MHz to 117.95 MHz C. 329.15 MHz to 335.00 MHz D. 2.0000 MHz to 29.999 MHz

Description : What is the frequency range of an aircraft’s Very High Frequency (VHF) communications? A. 118.000 MHz to 136.975 MHz (worldwide up to 151.975 MHz) B. 108.000 MHz to 117.95 MHz C. 329.15 MHz to 335.00 MHz D. 2.0000 MHz to 29.999 MHz

Last Answer : A. 118.000 MHz to 136.975 MHz (worldwide up to 151.975 MHz)

What is required for navigation in IMC? a. Radio equipment and equipment for guidance until visual point b. Anti-icing equipment c. A serviceable weather radar d. One VHF box and one HF box

Description : What is required for navigation in IMC? a. Radio equipment and equipment for guidance until visual point b. Anti-icing equipment c. A serviceable weather radar d. One VHF box and one HF box

Last Answer : a. Radio equipment and equipment for guidance until visual point

_____ polarization is employed in AM broadcasting A. Horizontal B. Vertical C. Circular D. Omnidirectional

Description : _____ polarization is employed in AM broadcasting A. Horizontal B. Vertical C. Circular D. Omnidirectional

Last Answer : B. Vertical

An isotropic radiator is A. in the northern hemisphere B. an antenna high enough in the air C. an antenna whose directive pattern is substantially incredible D. a hypothetical, omnidirectional antenna

Description : An isotropic radiator is A. in the northern hemisphere B. an antenna high enough in the air C. an antenna whose directive pattern is substantially incredible D. a hypothetical, omnidirectional antenna

Last Answer : D. a hypothetical, omnidirectional antenna

A vertical loop antenna has a A. unidirectional radiation pattern in the horizontal plane B. unidirectional radiation pattern in the vertical plane C. omnidirectional radiation pattern in the horizontal plane D. a bidirectional radiation pattern in the horizontal plane

Description : A vertical loop antenna has a A. unidirectional radiation pattern in the horizontal plane B. unidirectional radiation pattern in the vertical plane C. omnidirectional radiation pattern in the horizontal plane D. a bidirectional radiation pattern in the horizontal plane

Last Answer : D. a bidirectional radiation pattern in the horizontal plane

What is the radiation characteristic of a dipole antenna? A. Omnidirectional B. Bidirectional C. Unidirectional D. Hemispherical

Description : What is the radiation characteristic of a dipole antenna? A. Omnidirectional B. Bidirectional C. Unidirectional D. Hemispherical

Last Answer : B. Bidirectional

Which antenna radiates an omnidirectional pattern in the horizontal plane with vertical polarization? A. Marconi antenna B. Discone antenna C. Horn antenna D. Helical antenna

Description : Which antenna radiates an omnidirectional pattern in the horizontal plane with vertical polarization? A. Marconi antenna B. Discone antenna C. Horn antenna D. Helical antenna

Last Answer : A. Marconi antenna

Best description of a collinear and broadside antenna radiation pattern. A. Bidirectional B. Perfect circle C. Unidirectional D. Omnidirectional

Description : Best description of a collinear and broadside antenna radiation pattern. A. Bidirectional B. Perfect circle C. Unidirectional D. Omnidirectional

Last Answer : A. Bidirectional

Radiation characteristics of a dipole A. Figure of eight B. Omnidirectional C. Bidirectional D. Unidirectional

Description : Radiation characteristics of a dipole A. Figure of eight B. Omnidirectional C. Bidirectional D. Unidirectional

Last Answer : C. Bidirectional

Radiation pattern of a discone. A. Unidirectional B. Bidirectional C. Omnidirectional D. Figure of eight

Description : Radiation pattern of a discone. A. Unidirectional B. Bidirectional C. Omnidirectional D. Figure of eight

Last Answer : C. Omnidirectional