Ham Radio Technician Test Amateur 3

Question 1

What is the purpose of a CTCSS tone on a repeater?

Accepted Answer

To open the repeater only to signals carrying the correct subaudible tone

Answer

To encrypt the transmission

Answer

To increase the repeater's output power

Answer

To identify the repeater's call sign automatically

Question 2

If you receive a distress call on a frequency you normally use, what should you do?

Accepted Answer

Acknowledge it and offer assistance or relay the call to emergency services

Answer

Ignore it and continue your scheduled contact

Answer

Immediately change frequency to avoid interference

Answer

Record it and report it to the FCC later

Question 3

Which band is known as the '2-meter band' in amateur radio?

Accepted Answer

144–148 MHz

Answer

136–137 MHz

Answer

222–225 MHz

Answer

420–450 MHz

Question 4

What is the primary purpose of an antenna tuner (antenna coupler)?

Accepted Answer

To match the impedance of the transmitter to the antenna system

Answer

To amplify the transmitted signal

Answer

To filter out harmonics from the transmitter

Answer

To increase the antenna's physical length

Question 5

What does RF safety's 'duty cycle' refer to?

Accepted Answer

The percentage of time a transmitter is actually transmitting during an evaluation period

Answer

The ratio of transmitter power to antenna gain

Answer

The number of hours per day a station may operate

Answer

The power level relative to the FCC maximum

Question 6

Which of the following frequencies is in the Technician class HF phone (voice) allocation?

Accepted Answer

28.300 MHz

Answer

7.200 MHz

Answer

14.200 MHz

Answer

21.300 MHz

Question 7

What is the function of a 'squelch' control on a VHF/UHF transceiver?

Accepted Answer

To silence the receiver when no signal above a set threshold is present

Answer

To adjust the transmitted power level

Answer

To select between FM and AM modes

Answer

To set the repeater offset direction