HAM Radio Extra Class MCQ 2

Question 1

What is the maximum power output permitted for an amateur station transmitting on 60 meters (5 MHz) in the US?

Accepted Answer

100 watts PEP ERP

Answer

1500 watts PEP

Answer

200 watts PEP

Answer

50 watts PEP ERP

Question 2

Which ionospheric layer is primarily responsible for long-distance HF propagation during daylight hours?

Accepted Answer

F2 layer

Answer

D layer

Answer

E layer

Answer

F1 layer

Question 3

In a parallel RLC circuit at resonance, the circuit impedance is at its:

Accepted Answer

Maximum value

Answer

Minimum value

Answer

Equal to the reactance of the inductor

Answer

Equal to zero

Question 4

What does the term 'third-order intercept point' (IP3) indicate about an amplifier?

Accepted Answer

A measure of the amplifier's linearity and susceptibility to intermodulation distortion

Answer

The frequency where gain drops 3 dB

Answer

The power level at which the transistor saturates

Answer

The minimum detectable signal level

Question 5

What type of emission is produced when a single-sideband suppressed-carrier signal is transmitted?

Accepted Answer

J3E

Answer

A3E

Answer

F3E

Answer

R3E

Question 6

A Yagi antenna's front-to-back ratio describes:

Accepted Answer

The difference in gain between the main forward lobe and rearward radiation

Answer

The ratio of forward gain to free-space path loss

Answer

The number of elements divided by boom length

Answer

The SWR measured at the feed point

Question 7

Which digital mode uses frequency-shift keying with 8 tones to achieve high throughput on HF?

Accepted Answer

PACTOR IV

Answer

PSK31

Answer

RTTY

Answer

8FSK (FT4/FT8 variant)