Question

An automatic identification system (AIS) transponder transmits and receives information broadcasts on __________?

a) VHF frequencies
b) UHF frequencies
c) HF frequencies
d) MF frequencies

Answer 1

An automatic identification system (AIS) transponder transmits and receives information on VHF frequencies, which stands for very high frequency.

Step-by-step explanation:

An automatic identification system (AIS) transponder transmits and receives information broadcasts on VHF frequencies. The term VHF stands for very high frequency, which includes a range of frequencies from 54 to 88 MHz and 174 to 222 MHz. Television channels, which are often used as reference for VHF, also transmit on these frequencies.

Particularly, these VHF TV channels are in the two specific ranges that include frequencies that are used for AIS transponder communications. On the other hand, UHF, or ultra-high frequency, refers to a higher frequency range of 470 to 1000 MHz and is not the range referred to for AIS transponders.