AM Broadcast

AM broadcasting is authorized in MF band worldwide but can also include longband and ________

• shortband

• shortwave

• wideband

• long wave

2. What is the process of sending voice, speech, music or image intended for reception by the general public?

• electronic communications

• radio communication

• broadcasting

• narrowcasting

Short wave broadcasting operates in what band?

• 3 - 30 MHz

• 30 - 300 KHz

• 300 - 3 MHz

• 30 - 300 MHz

The transmitting antenna for an AM broadcast station should have a _____ polarization

• circular

• elliptical

• vertical

• horizontal

What broadcasting service

must use directional antennas?

• AM

• TV

• FM

• International

De Forest invented the triode or

Also known as ____

• transistor

• audion

• diode

• triode

A __________ polarized wave radiates energy in both the horizontal and vertical planes and all planes in between

• elliptical

• circular

• both

• none of the choices

Since the early 1920s amateur radio operators (or "hams"), limited to lower transmitter power than broadcast stations, have taken advantage of__________ for long distance (or "DX") communication

• shortwave

• spacewave

• LOS

• skywave

. _______ band are used for television broadcasting, cell phones, satellite communication, personal radio services, walkie-talkies, cordless phones, and numerous other application

• SHF

• VHF

• LF

• UHF

The _____ band is a major part of the shortwave band of frequencies, so communication at these frequencies is often called shortwave radio

• VLF

• HF

• LF

• VHF