Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

1. A The distance between the centers of the conductors and the radius of the conductors
2. B The distance between the centers of the conductors and the length of the line
3. C The radius of the conductors and the frequency of the signal
4. D The frequency of the signal and the length of the line

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

1. A There is no relationship between transmission line loss and SWR
2. B High SWR increases loss in a lossy transmission line
3. C High SWR makes it difficult to measure transmission line loss
4. D High SWR reduces the relative effect of transmission line loss

What is the nominal characteristic impedance of "window line" transmission line?

1. A 50 ohms
2. B 75 ohms
3. C 100 ohms
4. D 450 ohms

What causes reflected power at an antenna's feed point?

1. A Operating an antenna at its resonant frequency
2. B Using more transmitter power than the antenna can handle
3. C A difference between feed line impedance and antenna feed point impedance
4. D Feeding the antenna with unbalanced feed line

How does the attenuation of coaxial cable change with increasing frequency?

1. A Attenuation is independent of frequency
2. B Attenuation increases
3. C Attenuation decreases
4. D Attenuation follows Marconi's Law of Attenuation

In what units is RF feed line loss usually expressed?

1. A Ohms per 1,000 feet
2. B Decibels per 1,000 feet
3. C Ohms per 100 feet
4. D Decibels per 100 feet

What must be done to prevent standing waves on a feed line connected to an antenna?

1. A The antenna feed point must be at DC ground potential
2. B The feed line must be an odd number of electrical quarter wavelengths long
3. C The feed line must be an even number of physical half wavelengths long
4. D The antenna feed point impedance must be matched to the characteristic impedance of the feed line

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

1. A 1:1
2. B 5:1
3. C Between 1:1 and 5:1 depending on the characteristic impedance of the line
4. D Between 1:1 and 5:1 depending on the reflected power at the transmitter

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

1. A 4:1
2. B 1:4
3. C 2:1
4. D 1:2

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

1. A 2:1
2. B 1:2
3. C 1:5
4. D 5:1

What is the effect of transmission line loss on SWR measured at the input to the line?

1. A Higher loss reduces SWR measured at the input to the line
2. B Higher loss increases SWR measured at the input to the line
3. C Higher loss increases the accuracy of SWR measured at the input to the line
4. D Transmission line loss does not affect the SWR measurement