eTEP On 144 MHz 

Evening Trans Equatorial Propagation

They usually occur between 20 and 23 hours local time and near the equinoxes and high solar activity, the signals could be subject to serious signal variations and distortion by the multiple paths, the latter also brings with it the Doppler effect.

Unlike aPET, with ePET much greater communication distances between 3000 and 8000km could be achieved.