Extra Class

Which of the following is the space-weather term for an extreme geomagnetic storm?

What type of data is reported by amateur radio propagation reporting networks?

What does the 304A solar parameter measure?

What does VOACAP software model?

Which of the following is indicated by a sudden rise in radio background noise across a large portion of the HF spectrum?

Which of the following limits the highest frequency signal that can be accurately displayed on a digital oscilloscope?

Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes?

Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products generated by an SSB transmitter?

How is compensation of an oscilloscope probe performed?

What is the purpose of using a prescaler with a frequency counter?

What is the effect of aliasing on a digital oscilloscope when displaying a waveform?

Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge?

Which of the following is used to measure SWR?

Which of the following is good practice when using an oscilloscope probe?

Which trigger mode is most effective when using an oscilloscope to measure a linear power supply’s output ripple?

Which of the following can be measured with an antenna analyzer?

Which of the following factors most affects the accuracy of a frequency counter?

What is the significance of voltmeter sensitivity expressed in ohms per volt?

Which S parameter is equivalent to forward gain?

Which S parameter represents input port return loss or reflection coefficient (equivalent to VSWR)?