ORIGINAL: buchtes TX FUTABA ; T 6 EXA is the TX, thank you.
Futaba 6EXA (Manual). Early models were FM (PPM) modulation only whereas later versions were capable of both PCM or PPM. TX must be on PPM to operate the Micro 555.
The 555 is available in three different configurations. The 28272 (negative shift) is for Futaba and Hitec transmitters when using Futaba servos or older Hitec servos supplied with a "J" style plug.
The 28572 (negative shift) is for Hitec and Futaba transmitters when using Hitec 'S' servos (or "J" plugs amended by either snapping off the tab on recent servos or amending the old plugs to suit.)
The 28672 (positive shift) is for Airtronics and JR transmitters and will not operate correctly with your TX.
NB: Make sure the servos are plugged in correctly, looking at the top of the receiver, starting from left to right, it is signal, positive and negative (black lead closest to edge of case).
Micro 555 FAQ was to have been placed above the General Receiver FAQ on previous post, oversight is regretted.
Regards
Alan T.
Alan's Hobby, Model & RC FAQ Web Links