GPeR with sxt 2 (RBSXTG-2HnD)

i have an installation that i need to power sxt 2 (passive poe). distance must be around 150m.
can i use in the middle (80m) GPeR to extend the distance and successfully power on sxt 2 ? havent used them before so i dont know if they will fit-succeed to my installation.
at a previous installation i successfully power on sxt 2 with included passive adapter with cat5 cable at around 60m length (without GPeR) .i started at 100m length cable but not possible to power on. i was cutting cable until it was possible to power on and successfully booting at 60m length.
or better to use a switch to make a hop in between main router and sxt 2 ? if i use a switch i can have 90m from main router to switch and another 60m from switch to sxt 2 (passive poe).

Depends on the cable (voltage drop) and PSU you are planning to use, but overall, in described setup, it should work without any problems .

GPeR full description:
https://i.mt.lv/cdn/rb_files/GPeR-1564987196.pdf

i see that GPeR input is 802.3af/at. sxt 2 is only passive poe. will that work?

GPeR PoE in supports 802.3af/at or Passive PoE (24 - 57 V). Voltage drop on the cable and on GPeR units needs to be taken into account when calculating PoE-in possibility.