Where is transequatorial propagation (TEP) most likely to occur?
Between points separated by 2,000 miles to 3,000 miles over a path perpendicular to the geomagnetic equator✓Правильный ответ
Between points located 1,500 miles to 2,000 miles apart on the geomagnetic equator
Between points located at each other’s antipode
Through the region where the terminator crosses the geographic equator
Объяснение
Transequatorial propagation works between the two crests of enhanced ionization that sit roughly 10 to 20 degrees of geomagnetic latitude either side of the geomagnetic equator, which places the endpoints about 2,000 to 3,000 miles apart on a path crossing the equator near a right angle. A path lying along the geomagnetic equator or joining two antipodes misses that geometry entirely.