In a marine RADAR set, a high VSWR is...

In a marine RADAR set, a high VSWR is...

Question 1 of 270708E74Fq3QvLn5tqw7Ngxj

In a marine RADAR set, a high VSWR is indicated at the magnetron output. The waveguide and rotary joint appear to be functioning properly. What component may be malfunctioning?

Question 1 of 27070

Q

In a marine RADAR set, a high VSWR is indicated at the magnetron output. The waveguide and rotary joint appear to be functioning properly. What component may be malfunctioning?

🔍 Key Concepts

• VSWR (Voltage Standing Wave Ratio) in RF transmission lines and what causes it to be high • Which RADAR components actually carry high-power RF energy from the magnetron to the antenna • The functional roles of magnetron, waveform generator, STC circuit, and terminations in a marine RADAR

💭 Think About

• Start by deciding which of the listed components is directly in the high‑power RF path where VSWR is measured • Ask yourself: which of these parts could create a mismatch or reflection at the magnetron output itself? • Separate the low‑level control or timing circuits from the physical RF transmission components that can cause standing waves

✅ Before You Answer

• Verify which components operate at high RF power versus low‑level control or timing signals • Check which components, if faulty, would change the impedance match seen by the magnetron output • Eliminate any components that do not directly affect the RF transmission line or load when considering a high VSWR indication