Intro to General License Quiz
What portion of the 10-meter band is available for repeater use?
On the 10-meter band, the frequency portion above 29.5 MHz is used for FM repeater use.
What is the solar flux index?
The solar flux index indicates the amount of solar activity. The higher the solar flux index numbers, the greater the larger amount of solar activity on the sun. The frequency of 2.8 GHz (10.7 centimeters) was chosen because the numbers are valid under all conditions. A measure of solar radiation at 10.7 centimeters wavelength is called the solar flux index.
What is the purpose of an antenna tuner?
The way an antenna tuner increases power transfer is by matching the impedance of the radio, to the impedance at the end of the feedline that connects the radio to the antenna.
How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?
2.4 watts of electrical power are used by a 12-VDC (volts direct current) light bulb that draws 0.2 amperes. Here’s the math. They want to know the watts, or electrical power. We are given the voltage of 12 VDC, and the current draw of 0.2 amperes. Using Ohm’s Law, we know that Power in Watts = Amperes * Volts. So, Watts = 0.2 amperes * 12 VDC. Thus 0.2 amperes * 12 VDC = 2.4 watts.
Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?
It is a commonly accepted amateur practice, that 20-meter and higher wavelength bands use the upper sideband for voice communications. Thus, using this as a rule, you can deduce that any frequency in the 160-, 75-, and 40-meter and lower wavelength bands use lower sideband for voice.