I have a Prism 7X that I tried my module in today and it works fine. The X is kind of part of the logo on the Tx on mine. Also tried it on the Optic 6 and an old Futaba 7U and worked fine on them too. On the front of the Prism is the P7-AIRF PCM/PPM nomenclature. I was going to ask if you were for sure in PPM mode but you said it worked with other modules so assume that it was. Be interesting to see if it works on some other Tx's.
Thanks for responding.
Yeah, it is in PPM mode. I wonder what is the difference between the 7 and the 7X. I would imagine it is only in features as all the transmitter modules such as the 'Spectra' all channel module works in all of them. There are only three pins used in the 2.4gHz. The signal, which is the closest to the edge, the Plus next then the most negative or ground. They followed the servo lay out. The antenna pin is of course not used. Some of the Hitecs have more features and use more pins according to Hitec.
The front of my tx has the same nomenclature as you mentioned but from pictures mine is a 7 and not a 7X. My friend has a Futaba with a plug in module so I will try it on that one. I have modified a lot of transmitters with ASSAN and Corona and they all work fine. I even have a very old Futaba AM using an ASSAN and it works great. The encoder is the same for AM and the FM.
The old encoder chip is very susceptible to the 2.4 for some reason
look at post 422.
I am starting to believe that this module is just bad.
I will know more later. What a disappointment after waiting since May 1st.
I will post what I find.
Well today I tried the Hitec 2.4 module in a Hitec Eclipse 7 belonging to a friend and it worked just fine. So now I don't know what to think. Do I send the whole thing including my Prism 7 back to Hitec or what? I did try it on my other transmitter that work with the ASSAN and it does not work with these transmitters either. The module must be looking for a different data stream than that used on other units. The connecting pins cannot be different. There are only five on the Eclipse 7 and my Prism 7. They are signal, +, ground, ground and antenna. So the difference must be in the signal stream. I do not have an o'scope to look at the signal since I have retired. Does anyone have a clue?