Ham Radio Technician Test Repeaters & Linking Systems 3

Question 1

What is EchoLink in amateur radio?

Accepted Answer

A software system that links amateur radio stations via the internet using Voice over IP

Answer

EchoLink is a software-based system that connects amateur radio stations and repeaters worldwide via Voice over IP (VoIP) using the internet.

Question 2

What is IRLP (Internet Radio Linking Project)?

Accepted Answer

A method of connecting amateur radio repeaters to each other via the internet

Answer

IRLP uses dedicated hardware nodes and the internet to connect amateur radio repeaters around the world, allowing stations to communicate across long distances.

Question 3

In EchoLink and IRLP systems, what is a 'node'?

Accepted Answer

An individual station or repeater connected to the internet-linking network

Answer

A node is an individual station or repeater that is connected to an internet linking network such as EchoLink or IRLP, each assigned a unique node number.

Question 4

What is DMR (Digital Mobile Radio) in amateur radio?

Accepted Answer

A digital voice protocol that uses time slots to allow multiple simultaneous conversations on one frequency

Answer

DMR uses TDMA (Time Division Multiple Access) to divide a channel into two time slots, allowing two separate conversations to share a single frequency simultaneously.

Question 5

What does the abbreviation 'APRS' stand for?

Accepted Answer

Automatic Packet Reporting System

Answer

APRS stands for Automatic Packet Reporting System, a digital protocol used to share real-time tactical information such as GPS position data, weather, and messages.

Ham Radio Technician Test Practice Test

Ham Radio Technician Test Practice Test

Ham Radio Technician Test Repeaters & Linking Systems 3