🔍 Key Concepts

• How a radar video amplifier works in processing echo signals • The difference between operator controls (like range, brilliance, contrast) and internal signal paths • Which controls actually change the strength/shape of the video signal before it reaches the display

💭 Think About

• Think about which control(s) directly affect the amplitude of the received echo signal going to the display, not just how it looks to your eye afterward • Ask yourself: does changing range feed a signal into the video amplifier, or does it mostly change the timing/scale of the display? • Consider whether brilliance and contrast are implemented by changing the video signal level into the amplifier, or by adjusting the display/CRT itself

✅ Before You Answer

• Verify in your radar theory notes which controls are typically connected to the video amplifier input stage • Check whether range selection alters the video signal path or only the sweep timing/timebase • Confirm if both brilliance and contrast are associated with video gain/level before the display is driven