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Friday, July 3, 2009
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RadioQTH Lookup|
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You can use the lookup below to search RadioQTH's database of applications
that have been filed for or by a particular call sign. As with the license database,
the application data is a day or two behind the FCC's live data. The search will
include applications that have been filed in the last month. Clicking on the
License ID will give you a history of the applicant's call signs. Clicking on
the Vanity Application number will bring up the actual application that was
filed with the FCC.
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If you would like to do a more advanced license call sign lookup, where you can list
amateur radio operators by their zip code, then please use the Zip Code Lookup
feature by clicking here.
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General Exam Question: G8A12 Question: What happens to the RF carrier signal when a modulating audio signal is applied to an FM transmitter?
A. The carrier frequency changes proportionally to the instantaneous amplitude of the modulating signal
B. The carrier frequency changes proportionally to the amplitude and frequency of the modulating signal
C. The carrier amplitude changes proportionally to the instantaneous frequency of the modulating signal
D. The carrier phase changes proportionally to the instantaneous amplitude of the modulating signal
Correct Answer: A
For more questions that might appear on an Amateur Radio License Test, click on the "practice exams" link on the left panel.
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