Thank you for your reply, im going to order a couple since they are on sale

Follow the instructions carefully when binding. I initially left the bind plug in when initiating the binding procedure which caused the process to hang. Remove the bind plug then insert it after the bind process is initiated.

Noted- thanks

Does anyone have info on the actual frame rates for the different TX to RX modes (F-4G, T-FHSS-SR, T-FHSS, etc) and servo frequency and center pulse width for SR and UR? I guess it's intentional but it makes it hard to compare with other brands if they just give everything letter names with no actual numbers.

OK cool and thanks!!! That is great at least for the RX to servo rates. Any info on the TX frame rates? I understand they can be different. Also, curious if Futaba put out the table you posted or someone else did the measurements.

I have a T7XC so I connected an oscilloscope to the receiver and measured several modes. The UR speed I took from another topic on this forum from a guy who has a device to show the frame and pulse width directly on a screen. Yes, probably on the lower servo frame speeds it is possible that the transmitter transmit in a higher framerate as a kind of error correction. I did read transmitters can do this but I can not tell if Futaba is doing that and I doubt with SR/UR this is done, a lower transmission speed of data also needs a smaller bandwidth and so gives a better range.....

ok. It's just kind of hard to tell with Futaba. I've been sort of dormant with RC for a bout 5 years and only dabbled with cars at low level. I'd be coming from Spektrum where I have done a lot with planes and helicopters and a little with cars. I have a DX4S that is nine years old and is having a throttle dead-stick issue so for the short term, I bought a DX6C. However, I am interested in the high speed stuff.

With my helicopters, I used a DX18 and it's frame rate setting are clear:either 22ms or 11ms. Most of the servos were standards pulse width, 1500us and 200Hz frame rate I think used with my controllers except the tail servos with 760us and I'd run them at 333Hz. So I am trying to understand all the speeds and rates with Futaba and Sanwa. I guess the Futaba settings are in terms of their lettered names rather than actual frame rates?

In the T-FHSS mode you can choose for digital servo (333Hz) or analog servo (65Hz), in T-FHSS-SR mode you can choose between digital (333Hz) and SR mode (833Hz), not sure if the UR mode has such an option....

Basically normal digital servo's are rated up to 333Hz frame speed although Sanwa has a 384Hz (I believe) SHR mode that will work with most servo's. As you are a heli guy the 760usec servo's or also so called small band should be known to you. Problem is that most of them are rated up to 500Hz but there are 800Hz (and higher) to find out there. Only Futaba SR servo's can also be programmed with extra settings like moving speed, power and some other stuff. There are 3 or 4 different speed modes to choose in SR mode but basically those are presets you still can adjust to what you want. Dario Balestri made a short video about this.

Thanks for the great info. Not sure how one can measure TX to RX rate. You'd need a port at the right part of the RX circuit if the TX doesn't say the modes in terms of rate.

Don't over-think it. Most racers, even pros, are not using SR or UR servos. No ESC is compatible with SR or UR modes. HRS/Digital is more than fast enough for the application.

I have seen a Futaba graphic before that shows how the TX/RX speeds are also faster for F-4G and maybe also for T-FHSS SR.

Buy a higher end radio because you appreciate the quality and the adjustability, not because of statistics on response speeds.

well I get accused of overthinking a lot. Just kind of my thing but I think you have good advice.

I was wondering about that. If you have your TX set in a fast mode, what happens on the Throttle channel. Can the frame rate be set slower for the Throttle channel? Seems unlikely.

You set the response speed on each channel. With the Futaba radios, all channels default to "Digital", which is suitable for all ESCs and all Digital servos. You have to actively change the settings to SR or UR. I would imagine there is a non-zero number of users who have bought an SR or UR servo but still run the channel on the Digital setting and aren't even getting the supposed benefits of the faster frame rate.

It depends what you are driving.... Bashers for sure will not need it, large scalers and 1/8 offroad I also do not think they will notice it. But for sure 1/12 indoor and 1/8 circuit can have advantages of the speed. The latency in SR is shortened a lot and I think for a part it is with faster acting electronics within the servo, even when used in normal digital mode.

Funny thing is that most Sanwa drivers do use SSR/SXR servo's and most ESC's can work on those modes as well.

As mentioned Dario Balestri:

One key point is that Futaba isn’t Spektrum, so I have more confidence that Futaba would handle things better if they decide to release an Android-based system. Of course, it’s all speculation at this point — we’ll just have to wait and see what they come out with.