I've been using the practice exams on QRZ.com and I've been really happy with them, but I ran across a question in the General Exam pool where QRZ claims the correct answer is different than what I found in the study guide.
QRZ.com General Exam G020 - Question 32
Question:
What happens when the feed-point of a cubical quad antenna is changed from the center of the lowest horizontal wire to the center of one of the vertical wires?
A. The polarization of the radiated signal changes from horizontal to vertical.
B. The polarization of the radiated signal changes from vertical to horizontal.
C. The direction of the main lobe is reversed.
D. The radiated signal changes to an omnidirectional pattern.
QRZ.com says that 'A' is the correct choice, and deductive reasoning makes me agree, but the study guide I downloaded says the correct answer is opposite of QRZ.
Here is the study guide:
http://kb6nu.com/wp-content/uploads/2007/05/2007GeneralStudyGuide.pdf
Page 49 says:
The polarization of the radiated signal changes from vertical to horizontal
when the feed-point of a cubical quad antenna is changed from the center of the lowest horizontal
wire to the center of one of the vertical wires
So which answer is right?