Ham radio: Difference between revisions
Jump to navigation
Jump to search
| Line 18: | Line 18: | ||
Q: What is meant by the term 'knife edge' propagation? | Q: What is meant by the term 'knife edge' propagation? | ||
:A: Signals are partially refracted around solid objects exhibiting sharp edges. | :A: Signals are partially refracted around solid objects exhibiting sharp edges. | ||
Q: What is the characteristic appearance of a cold solder joint? | |||
:A: A grainy or dull surface. | |||
Q: What causes 'spin fading' when referring to satellite signals? | |||
:A: Rotation of the satellite and its antennas. | |||
Q: What is the term used to describe the use of a aub-audible tone transmitted with normal voice audio to open the squelch of a receiver? | |||
:A: CTCSS | |||
Revision as of 13:23, 23 May 2015
HAM Radio also known as Amateur Radio is communication on designated bands for non-commercial use.
sample test questions
Technician Class
Q: What does the abbreviation FET stand for?
- A: Field Effect Transistor
Q: What electrical component stores energy in an electric field?
- A: Capacitor
Q: What is meant by the term 'check' in reference to a formal traffic message?
- A: The check is a count of the number of words or word equivalents in the text portion of the message.
Q: What is meant by the term 'knife edge' propagation?
- A: Signals are partially refracted around solid objects exhibiting sharp edges.
Q: What is the characteristic appearance of a cold solder joint?
- A: A grainy or dull surface.
Q: What causes 'spin fading' when referring to satellite signals?
- A: Rotation of the satellite and its antennas.
Q: What is the term used to describe the use of a aub-audible tone transmitted with normal voice audio to open the squelch of a receiver?
- A: CTCSS