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X9D+ 2019 or Q X7S?

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Kim Taylor14/08/2019 00:02:24
267 forum posts
53 photos

I may be looking for a new system at some time in the near future, and always said that I'd probably go FrSky.

Having looked at the T9 website, I've narrowed it down to either the 2019 edition X9D+ or the Q X7S (can't afford the X10).

From what I can see, the QX7S would do everything I want it to (I don't need sliders) but the X9D+ has a new protocol (similar to Horus?) which may be the better longer term bet.

What do the experts on here think on the matter - QX7S (which seems to be marketed more as a multirotor tx) vs the 'old style' but new X9D+.

Thanks in advance for your thoughts

Kim

Edited By Kim Taylor on 14/08/2019 00:03:06

Trevor Crook14/08/2019 08:12:18
825 forum posts
63 photos

I have a QX7 which I use in a couple of fixed wing models. It's amazingly capable for the money, and the hardware feels good - the hall effect sticks on the S feel even better. Don't know what you've been using but Open Tx, whilst very powerful, takes a lot of head scratching at first.

Oh, the telemetry X-series receivers work well and are good value. Just make sure everything you buy is EU LBT - I made the mistake of buying a "universal" rx at first, and it wasn't!

Trevor Crook14/08/2019 08:12:19
825 forum posts
63 photos

I have a QX7 which I use in a couple of fixed wing models. It's amazingly capable for the money, and the hardware feels good - the hall effect sticks on the S feel even better. Don't know what you've been using but Open Tx, whilst very powerful, takes a lot of head scratching at first.

Oh, the telemetry X-series receivers work well and are good value. Just make sure everything you buy is EU LBT - I made the mistake of buying a "universal" rx at first, and it wasn't!

Andy Blackburn14/08/2019 08:28:24
481 forum posts
486 photos
1 articles

Cautionary note: I'm not an expert! However...

  1. The X9D is based on a JR case so the ergonomics are really nice; ramp the stick tension up as far as it'll go and it feels as nice as my old JR DSX9. If possible, see if you can have a play with both Transmitters before parting with cash.
  2. Documentation is not good for those (like me) who loathe fast-forwarding through videos to get to the part that you want and then missing it. However, this manual Taranis X9D Plus OpenTX User Manual 2.2 helped a lot.

HTH

Edited By Andy Blackburn on 14/08/2019 08:29:04

Peter Christy14/08/2019 08:42:54
1487 forum posts

I think basically it comes down to personal choice on the styling. There doesn't seem to be much difference spec-wise.

The QX7S has a layout more similar to the X10S, which would make a transition easier in future, should you decide to upgrade at some point. On the other hand, the X9D+ has the new Access protocol, which might perhaps make it more "future-proof". (Information on Access is limited at the moment, so I have no idea how much advantage this brings in real terms!)

I would expect QX7s to have Access in the near future as well. It may even be possible to do a firmware upgrade to the new protocol at some point, as I seem to recall reading somewhere that FrSky would offer this to hardware that was capable of supporting it.

Having mentioned "future-proofing", FrSky seem better than most at supporting older protocols, even the original V8 receivers are still available.

So as I say, I think it will eventually boil down to which styling you prefer - and that is a matter of personal taste!

Either way, you will have made a good choice! wink

--

Pete

 

Edited By Peter Christy on 14/08/2019 08:44:18

Alan Hilton14/08/2019 08:49:37
88 forum posts

Don’t be put off by the complexities of open tx the frsky operating system already on there transmitters is fine for every day flying

Alan

Kim Taylor14/08/2019 14:19:33
267 forum posts
53 photos

Thanks to all for your thoughts - all very helpful.

At the moment, I'm leaning towards the QX7S, because:

As Peter brought up - I do prefer the styling and maybe by the time I buy one, the new protocol will have been rolled out on the QX7S

I like the thought that it comes with an installed battery and (external) charger as well as a nice case - mainly because I don't want the faff of ordering a load of extra bits & bobs to make it work.

I don't need the sliders and as far as I can see, this (along with a couple of extra switches) is the main practical difference in the radios.

It's cheaper!!

Hi Trevor, I will buy the tx and a suitable rx from T9 if & when I decide to go forward, and will check compatibility with them. I think I'll be using the new upgraded X series receiver as the first model I'll change over is my Wot4XL Petrol, and I understand there have been issues with the earlier rx's used with cdi equipped motors.

Alan, does the QX7S come with the frsky operating system? I thought they were open tx only - maybe I'm wrong, wouldn't be the first time. I have to say that getting to grips with Open tx is the one thing I'm concerned about, although as some of you have pointed out above, it's not an insurmountable problem and there's plenty of information out there. I'll probably buy the manual that T9 sell as like you Andy, I hate looking at video's and trying to copy them, I'd much rather have a book in front of me to refer to - but then I'm old(ish).

Just waiting for the verdict on my current radio and then to decide whether I feel I can rebuilt trust in it.

Thanks to all

Kim

Edited By Kim Taylor on 14/08/2019 14:22:09

Caveman14/08/2019 20:08:23
avatar
266 forum posts
237 photos

Hi Kim,

Yes the Q7 comes with OpenTx.

The manual, written by Alex Datos is available here Q7 Manual

Don't know how it compares with the printed one from T9 but it's a good start.

Cheers GDB

Mike Blandford14/08/2019 20:53:48
avatar
514 forum posts
22 photos

Posted by Peter Christy on 14/08/2019 08:42:54:

I would expect QX7s to have Access in the near future as well. It may even be possible to do a firmware upgrade to the new protocol at some point, as I seem to recall reading somewhere that FrSky would offer this to hardware that was capable of supporting it.

Pete

My understanding is ACCESS will not be supported by a firmware upgrade as FrSky do not want to make the ACCESS firmware accessible by putting a logic analyser on the connections between the processor and the RF chip. The ACCESS hardware uses a single chip with both processor and RF on it so the signals are not accessible. FrSky even grind the identification off this chip (although I can make a guess what it is!).

Any upgrade to older radios is by replacing the RF module.

FrSky are also dropping support for the older 'D' receivers with ACCESS. This is partly because the 'D' protocol is not legal in the EU for new products. I'm in the middle of producing new firmware for D8 receivers that uses the 'X' protocol. I have something working (FCC version so far), that controls servos and sends some telemetry back for the two analog inputs and RSSI.

Mike

Peter Christy14/08/2019 21:04:11
1487 forum posts

Thanks for the clarification, Mike!

I guessed that it would be a choice between keeping "D" or having Access as there are only so many protocols you can squeeze into the available space!

However, I have quite a few models equipped with "D" series stuff, and also several "Old School" transmitters (including a Grundig "reed" outfit) using the "D" protocol, so I think I'll be sticking with what I've got anyway!

--

Pete

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