Gmdss_e3 : Element 3 - 432/605
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| What type of antenna pattern is radiated from a ground station phased-array directional antenna when transmitting the PPM pulses in a Mode S interrogation signal of an aircraft's Traffic alert and Collision Avoidance System (TCAS) installation? |
| A) 1090 MHz directional pattern. |
| B) 1030 MHz omnidirectional pattern. |
| C) 1090 MHz omnidirectional pattern. |
| D) 1030 MHz directional pattern. |
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