ARRL Vocabulary Development 5

Question 1

What does 'EME' stand for in amateur radio?

Accepted Answer

Earth-Moon-Earth (moonbounce) communication

Answer

Emergency Messaging Equipment

Answer

Electromagnetic Emission evaluation

Answer

Extra Modulation Enhancement

Question 2

What is the 'phonetic alphabet' and why do hams use it?

Accepted Answer

A standardized set of words used to spell letters clearly over voice

Answer

A chart matching call sign letters to Morse code

Answer

An encoding system for digital packet radio

Answer

A pronunciation guide for foreign DX call signs

Question 3

What is meant by 'split' operation on HF?

Accepted Answer

Transmitting on one frequency and listening on another

Answer

Using two separate antennas simultaneously

Answer

Dividing power equally between two transmitters

Answer

Operating two rigs from one antenna with a switch

Question 4

What is 'third-party traffic' in amateur radio?

Accepted Answer

Communications on behalf of a person who is not a licensed amateur

Answer

Messages passed between two relay repeaters

Answer

Emergency traffic handed off to a third net

Answer

Interference caused by a non-amateur transmitter

Question 5

What is the term for the lowest frequency at which signals are reflected back to Earth by the ionosphere?

Accepted Answer

Critical frequency

Answer

Skip distance

Answer

Maximum usable frequency

Answer

Absorption threshold

Question 6

What does 'WSJT-X' refer to in amateur radio?

Accepted Answer

A software suite for weak-signal digital modes like FT8 and JT65

Answer

A worldwide repeater linking software

Answer

A logging program for contest operations

Answer

An ARRL-certified training exam platform

Question 7

What does the term 'ragchew' mean in amateur radio?

Accepted Answer

A long, casual conversational contact between operators

Answer

A brief contest exchange of signal reports only

Answer

A digital mode using repetitive data bursts

Answer

A formal net check-in procedure