HAM FREE Ham Radio Extra Class General Questions and Answers 2

Question 1

What is the maximum symbol rate permitted for RTTY or data emission on the 20-meter band for Amateur Extra class licensees?

Accepted Answer

300 baud

Answer

1200 baud

Answer

9600 baud

Answer

19200 baud

Question 2

Which of the following describes the function of a circulatory in a repeater system?

Accepted Answer

It isolates the transmitter and receiver when sharing a single antenna

Answer

It rotates the polarization of the transmitted signal

Answer

It provides DC power distribution to all repeater components

Answer

It switches between multiple antennas automatically

Question 3

What is the purpose of a Beverage antenna?

Accepted Answer

A long-wire receiving antenna for low-frequency directional reception

Answer

A compact vertical antenna for VHF mobile use

Answer

A broadband transmitting antenna for HF contests

Answer

A phased array for satellite communication

Question 4

What happens to the impedance at the input of a quarter-wave transmission line section that is short-circuited at the far end?

Accepted Answer

It appears as an open circuit

Answer

It appears as a short circuit

Answer

It appears as a pure capacitance

Answer

It appears as a 50-ohm resistance

Question 5

In the amateur satellite service, what is a linear transponder?

Accepted Answer

A device that retransmits a range of received frequencies shifted to another band

Answer

A repeater that only retransmits FM signals

Answer

An amplifier that boosts the power of a single SSB signal

Answer

A digital processor that decodes and re-encodes signals

Question 6

What is the primary advantage of using a direct digital synthesizer (DDS) as a VFO?

Accepted Answer

Extremely fine frequency resolution and fast switching speed

Answer

Higher output power than analog oscillators

Answer

Elimination of all spurious signals

Answer

Reduced current consumption compared to crystal oscillators