JRIWMAC

I recently purchased a T32MZ, I now want to use this Tx as a jet training master transmitter and use my old T18MZ as a wired buddy transmitter.

I have tested the voltage on the trainer lead outputs and it is 3.3V on the 32MZ, and 7.6V on the 18MZ!

My question is, which Futaba lead can I use for buddying in this configuration (if it is possible at all)?

FUTABA-RC

The voltage difference does not matter since the slave transmitter is not turned on, only the master.

This is the cord the manual says to use:

https://futabausa.com/product/mm-tc-fg/

JRIWMAC

But the master 32MZ is only powered by a 1S LiPo battery (3.7V) and the slave 18MZ is powered by a 2S LiPo battery (7.4V)! There is no way the 32MZ can provide enough voltage to power the 18MZ via the lead! Also, wasn't the 12FG lead referred to in the link made to support a 9.6V to 7.2V master/slave voltage difference? Please double-check and confirm this configuration as I don't wan't to risk damaging two very expensive transmitters!

FUTABA-RC

I simply wrote what is in the manual. The slave is not actually transmitting, it is only sending control signals to the master TX. I will confirm the manual is correct.

JRIWMAC

I borrowed a square-to-square lead (with no voltage stepdown) and it worked fine!
Also successfully used an R7108SB Rx in FassTest mode and used the SBus output as a wireless trainer into the T32MZ and it worked just fine too (just wish there was a cheaper Rx option for performing this task).

FUTABA-RC

Good to know. Glad it got worked out for you!