If a gated LC oscillator operating at 27 kHz is used to develop range markers, what will be the range between markers?

In radar systems, range markers are used to indicate distances on a display, and their spacing in nautical miles is determined by the frequency of the oscillator used to generate the radar signals. For a gated LC oscillator operating at a frequency of 27 kHz, the distance between range markers can be calculated based on the speed of light and the frequency of the signal.

The speed of light is approximately 299,792 kilometers per second, which can be simplified to about 300,000 kilometers per second in practical calculations. Converting to nautical miles, 1 nautical mile is defined as 1,852 meters or 0.001852 kilometers.

To find the distance represented by one "ping" of the oscillator, we can use the formula:

Distance = (Speed of Light x Time) = (Speed of Light / Frequency).

The period or time involved in one cycle of a 27 kHz oscillator is the reciprocal of the frequency:

Period = 1 / Frequency = 1 / 27,000 seconds ≈ 0.000037037 seconds.

Now, applying the speed of light:

Distance = Speed of Light x Period ≈ 300,000 km/s x 0.000037037 s = 11.11