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What is added to SPN-42 to eliminate wandering of the echo skin?(a) AESA(b) Aircraft beacon(c) PESA(d) Helical antenna |
Answer» Correct choice is (b) Aircraft beacon The best explanation: The SPN-42 was retrofitted with a small X-band parabola when aircraft beacons were added to eliminate errors caused by wandering of the echo skin. |
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