While I cannot supply the file directly, one can obtain a reliable "Yajurveda Trikala Sandhyavandanam Sanskrit PDF" from:
Three rounds of controlled breathing chanting the 24-syllable Gayatri mantra mentally. In the PDF, this will include the vyahrtis: Bhuh, Bhuvah, Suvah. yajurveda trikala sandhyavandanam pdf sanskrit
Om bhūr bhuvaḥ svaḥ | tat savitūra vareṇyaṃ | bhargo devasya dhīmahi | dhiyo yo naḥ pracodayāt || While I cannot supply the file directly, one
The user chants 108 times. The PDF must include: yajurveda trikala sandhyavandanam pdf sanskrit
Gayatri: Invocation to the divine light (Savitur) to enlighten intellect.