I have Futaba FX-30 with module TM-14 2.4 GHz (European distribution from robbe) and all is working well many years. Now I need a 40 MHz module for my transmitter - why? Because I'm building submarine model and I have old 40 MHz PCM receivers. I bought a used module Futaba MZ-FM 40MHz with sticker GLOBAL-EUR. This module was designed for a transmitter 14MZ, but in many places it was written that it will be good for my transmitter FX-30. I know there were modules dedicated to the FX-30, it call FX-FM, but they are unavailable anywhere. After inserting the module into the transmitter and turn-on I have message: INCORRECT RF-MODULE. In my transmitter I have firmware 3.0 Area Europe.
And now there are questions: will this module MZ-FM work in my transmitter or not? If so, where could be the problem? Damaged module? Or an incompatible module?
On the forum https://www.helifreak.com/ I found a topic about programming this module. It is very simple, plain EEPROM with very simple data. I have tried several combinations given on this forum, but the effect is still the same - INCORRECT RF-MODULE when I write to EEPROM data fo Europe and turn-on transmitter. But, when I write to EEPROM combinations data for New Zealand, China or Korea, module is working, but the frequencies are not what I need. They end in zero and I need five.
Has anyone had experience with these modules and can help me? Maybe someone has an FX-FM module for 40 MHz.