Which protocol enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

Which protocol enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. IRLP
• B. EchoLink
• C. VoIP
• D. STS

Answer: (B)

The correct answer is EchoLink. EchoLink is a software application that facilitates the connection of amateur radio stations to each other over the internet. It allows licensed amateur operators to communicate via voice over the internet and then transmit through a repeater. The key feature of EchoLink is that it permits users to initiate a transmission from their computer or smartphone without needing to directly use a radio. This capability enables individuals who may not have immediate access to a physical radio to participate in amateur radio communications and access repeaters as long as they have an internet connection. IRLP (Internet Radio Linking Project) also connects amateur stations over the internet but typically requires the use of a radio to initiate a link. VoIP (Voice over Internet Protocol) is a broader technology that encompasses various methods for transmitting voice over the internet but is not specific to amateur radio. STS (Secure Telephone Service) is unrelated to amateur radio and is not a protocol used for this purpose. Each of these alternatives lacks the specific functionality and ease of access provided by EchoLink in the context of operating through a repeater without a traditional radio.

The correct answer is EchoLink. EchoLink is a software application that facilitates the connection of amateur radio stations to each other over the internet. It allows licensed amateur operators to communicate via voice over the internet and then transmit through a repeater. The key feature of EchoLink is that it permits users to initiate a transmission from their computer or smartphone without needing to directly use a radio. This capability enables individuals who may not have immediate access to a physical radio to participate in amateur radio communications and access repeaters as long as they have an internet connection.

IRLP (Internet Radio Linking Project) also connects amateur stations over the internet but typically requires the use of a radio to initiate a link. VoIP (Voice over Internet Protocol) is a broader technology that encompasses various methods for transmitting voice over the internet but is not specific to amateur radio. STS (Secure Telephone Service) is unrelated to amateur radio and is not a protocol used for this purpose. Each of these alternatives lacks the specific functionality and ease of access provided by EchoLink in the context of operating through a repeater without a traditional radio.