Ham Radio General Class Test FREE Ham Radio General Questions and Answers 3

Question 1

What type of filter is used to block signals above a specified frequency while passing those below it?

Accepted Answer

Low-pass filter

Answer

A low-pass filter allows frequencies below its cutoff frequency to pass while attenuating higher frequencies.

Question 2

What is the approximate length of a half-wave dipole antenna for the 40-meter band?

Accepted Answer

66 feet

Answer

A half-wave dipole for 40 meters is approximately 66 feet long, calculated as 468 divided by the frequency in MHz.

Question 3

Which of the following is a requirement for transmitting on amateur radio frequencies?

Accepted Answer

You must identify your station with your call sign at least every 10 minutes

Answer

FCC rules require amateur stations to transmit their call sign at least every 10 minutes during a contact and at the end.

Question 4

What does the term 'intermodulation distortion' refer to in a receiver?

Accepted Answer

Unwanted signals generated by the mixing of two or more strong signals

Answer

Intermodulation distortion occurs when strong signals mix in a receiver's nonlinear components, producing spurious signals.

Question 5

What is the function of an antenna tuner?

Accepted Answer

To match the impedance of the antenna system to the transceiver output

Answer

An antenna tuner adjusts impedance to provide a match between the transceiver and the antenna system.

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