HF Operating Procedures Flashcards
6 cards from real Ham Radio General Class Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 HF Operating Procedures flashcards as text
You hear a rare DX station on 14.195 MHz calling "CQ and listening up 5 to 10." Your General Class license allows you to transmit phone on this part of the band. Where should you set your transmitter's frequency to call this station?
Answer: Between 14.200 MHz and 14.205 MHz.
The phrase "listening up 5 to 10" means the DX station is listening for calls on a frequency 5 to 10 kHz *higher* than their own transmitting frequency. This is called split operation. Calculating this (14.195 + 0.005 to 14.195 + 0.010) gives the listening range of 14.200 MHz to 14.205 MHz. Transmitting on their frequency (simplex) would cause interference and you would likely not be heard.
Which of the following types of amateur radio traffic has the highest priority according to FCC rules?
Answer: Emergency traffic involving an immediate threat to life or property.
According to FCC Part 97 rules, transmissions directly relating to the immediate safety of human life or the immediate protection of property have absolute priority over all other amateur communications.
Which of the following is the primary reason for using the standard ITU phonetic alphabet when spelling out your call sign during a voice contact?
Answer: To increase the intelligibility of letters over noisy or weak signal paths.
The standard phonetics (Alpha, Bravo, Charlie, etc.) are chosen because they are phonetically distinct and less likely to be confused with one another, especially when signals are weak, noisy, or fading. This greatly improves the accuracy of communication.
You wish to join a directed HF net that is already in progress. What is the generally accepted procedure?
Answer: Wait for the Net Control Station (NCS) to ask for check-ins and then transmit your call sign.
In a directed net, all communication is managed by the Net Control Station (NCS). The proper procedure is to listen until the NCS specifically invites new or late stations to check in, and then transmit your call sign as directed. Interrupting the net is poor etiquette.
In the RST signal reporting system, what does the "S" component represent?
Answer: The signal's strength, often read from an S-meter.
The RST system stands for Readability, Strength, and Tone. The "S" refers to the signal strength, typically reported on a scale of 1 to 9, which often corresponds to the station's S-meter reading. For phone (SSB), only the RS (Readability and Strength) portions are used.
You are in a single-sideband (SSB) voice QSO and the other station says they are experiencing "QRM". What are they telling you?
Answer: They are receiving interference from other stations.
The Q-signal "QRM" means "I am being interfered with" and refers specifically to man-made interference from other stations. This is distinct from "QRN," which refers to natural noise like static from lightning.