Ham Radio Technician Test Equipment & Tools Usage 2

Question 1

What is the purpose of a dummy load when testing a transmitter?

Accepted Answer

To absorb RF energy without radiating a signal

Answer

A dummy load absorbs transmitter output power as heat so you can test the radio without broadcasting a signal over the air.

Question 2

Which instrument would you use to measure the standing wave ratio (SWR) of an antenna system?

Accepted Answer

SWR meter (reflectometer)

Answer

An SWR meter (reflectometer) measures the ratio of forward to reflected power to indicate how well the antenna is matched to the feedline.

Question 3

What does a low SWR reading (close to 1:1) indicate about an antenna system?

Accepted Answer

The antenna and feedline are well matched

Answer

An SWR near 1:1 means almost no power is being reflected back toward the transmitter, indicating a good impedance match.

Question 4

A technician uses an antenna analyzer at the feed point of a dipole. What advantage does this have over measuring SWR at the radio?

Accepted Answer

It eliminates feedline loss from the measurement, giving true antenna impedance

Answer

Measuring at the feed point removes feedline loss from the reading, so you see the actual antenna impedance rather than a feedline-masked value.

Question 5

Which of the following is a common use for a signal generator in amateur radio equipment maintenance?

Accepted Answer

Injecting a known RF signal to align or troubleshoot receivers

Answer

A signal generator produces a calibrated RF signal that technicians inject into a receiver's input to test sensitivity, selectivity, and alignment.

Ham Radio Technician Test Practice Test