What is required before using the EchoLink system?

To use the EchoLink system, it is necessary to register your call sign and provide proof of your amateur radio license. EchoLink is a VoIP (Voice over Internet Protocol) application designed to allow licensed amateur radio operators to communicate with each other over the internet. Because it connects multiple users with varying capabilities and locations, the system has a verification process that ensures only licensed operators are granted access.

Providing your call sign during the registration process allows EchoLink to verify your status as a licensed amateur operator with the appropriate privileges to use the system. This is a crucial step in maintaining the integrity of amateur radio communications and ensuring that all users are compliant with the regulations set forth by the governing authority, typically the FCC in the United States or equivalent bodies in other regions.

The other choices suggest steps that might sound relevant but are not actual requirements for using EchoLink. For instance, while having training can be beneficial, there is no mandated completion of training specifically for using EchoLink. Additionally, EchoLink does not require users to purchase a license for the software since it is freely available to licensed amateurs. Therefore, the correct action is to register your call sign to gain access to the system.