Tait T850 Rebuild May 2016 Rebuild GB3IC using a series 1 Tait T850. Fitted in the rack but still need to add an audio pre amp to tx input. T857-15 Exciter T857-15 Exciter TX input filter bypass T855-15 Receiver Backplane All hidden behind the face place. Job Done ! Setting the level Quick test Drill one more hole in the old face place, only need two holes so put another screw in to cover the one in the wrong place.. Found an old PC fan bracket to use as a mount. Not following the instructions as I want lower gain and shaped audio for FM Transmission. Building an amp for TX audio