Glad it was helpful!

Thanks Bill--will do.

Glad it was helpful!

You're welcome.

You're very welcome. Glad to help.

Glad it was helpful!

Thank you.

Sure thing Jeff.

Yes, if the option presents itself, you should do it.

What is d8?

@@ryanlemons3255 Hi receivers with telemetry "D" and 8 channels . Normaly they have allready A 1and A 2 analog inputs already in the receiver. Note that this tunning is necessary for any receiver,the problem it is in the module not in the receiver. The FrSky receivers a all tunned from factory.

Not true. Fine tuning isn't an EdgeTX feature. It's part of the MPM code. If Fine Tuning appears with the protocol you select, you should perform it.

Weird how some models just drop from the sky sometimes eh? :)

Worth performing too...

The MPM download page has options for channel order in the firmware.

1) The MPM developer probably knows more about RF than most, and here are the exact words from the manual: "Once the Fine Tuning value is known, it can be used for all models which use the same protocol." 2) Other TX's don't even have a fine tune option. The reason is because the manufacturers of TX and RX specify the frequencies to use--precisely, and they tune the TX/RX to those frequencies which is why the fine tune option didn't really exist until we had an MPM. So if stock TXs don't have a fine tune option, doesn't that imply the RX using a given protocol will always use the same frequency? I mean for a lot of years I've bound FrSky Xx, Dx, Sx, Lx receivers without ever adjusting the frequency on any radio--until the MPM. 3) Sounds like HOTT has a QA problem. At the end of the day, it's your money, your hobby--do what you think is best. I'll trust the actual developer of the code who specifically wrote it's not necessary until my radio gives me a reason to believe something else.

If RSSI is sent from Rx to Tx it will be presented on the calibration screen. There is no need or option to add it. You can discover sensors on the telemetry screen to use RSSI elsewhere in your setup but the RSSI value shown in the fine tune section is sensor independent. i.e. It is displayed if it is sent/supported.

Frequency fine tune is only conducted when the selected protocol offers it as an option on the screen. So bottom line, if you see Frequency Fine Tune as an option, conduct the process.

@@RCVideoReviews Ic so if there no option im good. But if there is option system want's me to do fine tuning. Why cant it do it automatically? By the way ty so much.

Ultimately, I believe that's where the developers would like to be--automatic fine tuning. Just not there yet.

Use DSM Auto on the 4-in-1 MPM for protocol.

It doesn’t matter that much. You’re .5 off either way.

@@RCVideoReviews Thank you

No. This is an MPM (Multi Protocol Module) process.

No. Fine tuning just more closely aligns the tx/rx transmit frequency. It wouldn't resolve legitimate obstruction issues.

One problem: If you have a Radiomaster ELRS you don't have SFHHS protocol. I just looked on my MPM and with Futaba selected, RF Protocol SFHSS, Frequency Fine Tune is sitting right there where it's supposed to be.

@@RCVideoReviews i order the wrong radio. Just i order the multiprocolo module 4:1 thanks

Fine tune option is protocol dependent. If the protocol doesn't support it, it won't show on the radio. Select a known protocol like D16 and see if it pops up. It should.

@@RCVideoReviews I am using D8....shouldnt that support it? Im pretty sure it did before on Opentx on my tinyhawks and they dont use d16 right?

If you set frequency fine tune to 0, you should be able to bind any rx. This is just a fine tune step to ensure the Tx and Rx are tuned as close as possible.

You need ELRS receivers to bind with ELRS transmitters.

You could buy a Radiomaster External 4in1 module. That will bind with the RM non-ELRS receivers. PS It helps if you use model numbers i.e. R168.

Yes. Average them and use the sign.

Hopefully this cleared things up a little.

I would

If the protocol does not show a fine tune option, it doesn't need to be done. If it does show a fine tune option, it does need to be done.

If frequency fine tuning appears when you select a protocol, it's suggested to do it. It's not quite as clear cut as "loss of signal and crash". It's more like listening to the radio in your car when you start getting farther away from the source--it kind of starts to fade and you hear interference, eventually you can't hear it at all. Better example is tuning in UHF channels on an OTA Analog TV. The closer you get to the center freq, the better the picture.

@@RCVideoReviews ok thanks i understand the example but since i crashed yesterday just after changing the settings for the telemetry so i stop listening that annoying warning. I thought the problem was that i lost reception because the plane started to turn to the left without any control until end up on a tree. locally it is a small apprentice Stoll 700m. no mayor damage but rider remained tunes to the left without any reason. thanks for answering my questions!!!

Turn on logging and look at the RF telemetry. Take the guesswork out with data the radio can record.

If you look on the product link at Hobbyking, the protocol is specified in the description: hobbyking.com/en_us/turnigy-9x-2-4ghz-8ch-receiver-v2.html Protocol: AFHDS Then look at the MPM protocol page here: github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Protocols_Details.md And you can see it supports AFHDS2A. I'm not sure if AFHDS2A is backward compatible with AFHDS, so the only thing to do is try. It is a FlySky protocol on the MPM.

Ali ti ti sprejemniki sedaj delajo, na katero ime ste jih nastavil, številko ?

There is no frequency fine tune for ELRS as far as I know.

@@RCVideoReviews OK thank you

The radio in this video was/is running EdgeTX.

One of the developers on Edge responded to your gimbal question on discord. Regarding RF tuning: kzfaq.info/get/bejne/Zp6Ha9ik07aUlHU.html

@@RCVideoReviews Ty but there no RSSI on none telemetry receiver right? Because my receiver only receive command from transmitter. Tactic TR625 according to product page and pdf it isn't receiver that send information back to radio. I'm so confuse :(

If fine tuning isn't presented after you've selected the protocol, it's not supported by that receiver.

You are looking for the center of the range.

That's what the software developer prescribes: Calculate the median between the two values (TUNE_MIN + TUNE_MAX) / 2 = TUNE_MEDIAN

@@RCVideoReviews This shows the difference between the SW engineer and the mathematician - this is actually the mean - not the median. :-)

And what do you see when you try it both ways?

I agree that having the RX too close affects the results - RSSI just doesn't appear stable at less than 3-4 feet. The same problem can occur when binding - being too close swamps the RX and the bind becomes a real struggle.

I just ran the same exact test at 1' and 10' and came up with the same value. So I'm not seeing it that way. But, your money, your hobby, do it whatever way suits you best.

@@RCVideoReviews I tend to put the rx in a different room so i can still see the bind light then tune it until the light goes out and the RSSI drops out ( + & -). You don't get a great deal of difference in the tuning numbers and like you say do what works for you.

PaulG is right in that you can get swamping if the Rx is too close. I usually fix that with a little space and by pointing the active element away from the Rx. If RSSI is unstable to start, then the tune won't be right.

You need to bring this question to discord. Far too many things need to be unpacked to get to the bottom of this. I can't offer the help you need on KZfaq.

@@RCVideoReviews okay bro give me the discord link and btw thanks for answering :)

Simply put, if frequency fine tune appears when a protocol is selected, you're advised to perform the tune.

Yup--you're looking for the median value: Calculate the median between the two values (TUNE_MIN + TUNE_MAX) / 2 = TUNE_MEDIAN