The Royal Thai Air Force’s air defense posture consists of three sectors, the southern sector is termed RTADS (Royal Thai Air Defense System) Phase 3.
Below are the locations of the three radars.
Phuket
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Ko Samui
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Songkhla
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While the exact model of the radars employed by RTAF is not yet known The radar employed by RTAF is the Northrop Grumman AN/FPS-130X long-range radar, a calculation of their coverage is done using a range of 200nm (although it can detect up to 250mn). From the graphic below, we can see that the radars in Songkhla and Phuket were within range of detecting MH370. In fact, coverage from both radars overlaps each other at the point where MH370 was last seen by Malaysian radar.
