RE: Futaba R127DP Rx: PCM1024 *AND* PCM512?
Hmmmm, jdb, the trainer switch is, in fact, bent. It's the closest anything on this transmitter has come, to being damaged. I was wondering if that had any effect. But I had assumed it would be an all-or-nothing thing. And since I was getting a signal, I thought the switch must be OK. But you have made me think.
I might wire around that trainer switch and see if it changes anything.
Excellent tip!
If it changes nothing, I might try the resistor-pullup trick. Might start with a 10K to +5V just in case, considering how slow the speeds are relative to what I'm used to. And will probably mount it on the encoder board rather than the plugin to the RF module, closer to the source of the signal.
BTW, the ground for the RF module seems to float free, away from the chassis ground (if any). Is this normal?
The RF module is the one that came with the transmitter, don't know what number. Yet. I'll check if I have time.