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RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

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Old 02-02-2012, 12:32 AM   #1
firemanbill
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Default DX18! I want one!!!

Wow!

http://www.spektrumrc.com/Products/D...8000&view=test


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Old 02-02-2012, 01:43 AM   #2
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Originally Posted by firemanbill View Post
H'mmmm
Lets see, 18 channels? With my usual 6 channels per model, I cound fly three models at the same time

DennyV
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Old 02-02-2012, 01:55 AM   #3
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Originally Posted by kyleservicetech View Post
H'mmmm
Lets see, 18 channels? With my usual 6 channels per model, I cound fly three models at the same time
LOL! Yeah I don't need it either.. but it is really cool!

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Old 02-02-2012, 03:39 AM   #4
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18 channels is good for the guys that fly big planes with multiple servos per control surface, or planes with lots of features, or big jets with gear door sequencing, things like that. Running stuff like that, you'd be surprised how fast 18 channels can get used.

$800 is not a bad price point. Look at Futaba, they want almost $3K. But I'm going to get the new XPS 18-ch radio when it comes out in a few months, only $250.

Pat Gagnon
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Old 02-02-2012, 04:07 AM   #5
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i'm no expert, 18 channels.......lol


but i do need one! 50 plane memory ,a great reason to build more planes...a lot more.

narrow is the place to land...wide is the space to crash....choose the narrow way!
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Old 09-07-2012, 02:22 PM   #6
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Back from the dead....

Well I splurged and bought the DX18 late last week - it came yesterday. O my - is it going to be fun! I miss touch screen of the A9 but it looks like everything else is MORE than covered. And I have so many BNF planes Spektrum is just the right choice for me.

Just started to play with it now. Very happy so far.

Now setting up 20+ airplanes on the new system YIKES - I am a sick puppy.

Mike
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Old 09-07-2012, 03:09 PM   #7
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Congratulations Mike,
I'm officially very jealous. I did look at the DX18 but I could get the DX8 for 1/3rd of the price, and the '8' did all I needed and more, so in the end my head ruled my heart and I got the '8'.

The 18 does look like an awesome piece of kit though....

Steve
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Old 09-07-2012, 03:28 PM   #8
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Steve I went back and forth on that very issue. The two items that put me over - dedicated sailplane programing and sliders. I can't believe the 8 didn't have sliders!

I guess their evil upgrade plot worked......

One other slight - was the fixed antenna's. I just really like the beefy fixed antenna.

Mike
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Old 09-07-2012, 04:09 PM   #9
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The sliders is an issue that bugs me a little too. I've got a 25 year old Futaba Tx that has them! The only explanation on the '8' not having sliders is, as you say, to deliberatly hold back features to encourage people to spend more, an evil plot for sure (though all manufacturers do it of course).

End of the day though i dont need sliders for my current fleet so it is something I can live with.
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Old 09-24-2012, 05:20 PM   #10
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The DX18 only has 12 channels available for control surfaces. Channels 13-18 are of low resolution and high latency.
Pete

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Old 09-24-2012, 08:08 PM   #11
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Originally Posted by pilotpete2 View Post
The DX18 only has 12 channels available for control surfaces. Channels 13-18 are of low resolution and high latency.
Pete
The other channels are 512 resolution as opposed to the first ten which are 1024 or 2048. Bear in mind that 512 resolution used to be standard on all radios not so many years ago and is still standard on lower end transmitters (Dx5 for instance), and yet people used to and still do manage to fly perfectly well with those 'low resolution' transmitters

Bottom line though you would be very hard pressed to dream up ten independent primary control surfaces that could be installed on one plane. The other 8 will cover stuff like retracts, lights, bomb drop, brakes etc etc that don't benefit at all from super high resolution.
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Old 09-24-2012, 08:25 PM   #12
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It's more than the resolution, there is also slower response time on those channels. Yes, there are many uses for those extra 6 channels in complex scale models with many accessory functions. Flaps and speed brakes are another function where the low resolution channels would be useable, but they cannot be used in the manner that giant scale aerobatic planes require, where multiple servos are used on a common control surface, an example being 2 or even 3 ganged servos for the rudder.
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Old 09-24-2012, 08:36 PM   #13
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Originally Posted by pilotpete2 View Post
but they cannot be used in the manner that giant scale aerobatic planes require, where multiple servos are used on a common control surface, an example being 2 or even 3 ganged servos for the rudder.
Pete
If you were 'ganging' servos together then surely the control signals would all be split from one channel?
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Old 09-24-2012, 09:08 PM   #14
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Pete,
FWIW even the mighty Futaba T18MZ (which is over four times the price of the DX18) is limited to 12 channels if you want to run servos in high resolution/low latency mode (Futaba call it FASSTest 12CH mode).

If I were to hazard a guess on the reasoning behind this limitation I'd say that its probably a fundamental limit of how much data you can transfer over a 2.4Ghz link and not a brand specific issue.
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Old 09-24-2012, 09:55 PM   #15
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True, 12 ch FASSTest has better latency than the 18 channel mode, an important consideration for high performance Heli pilots, but resolution is the same, and all channels are of equal performance, even in the 18 channel mode. Yes, the 18MZ is a lot of money, but no other radio can do what it does. As for myself, I would neither pay that much for a radio, nor would I ever need that much radio.
My 8FG costs a lot less than the DX18, and for IMAC and GS aerobatic models it has the same 12 ch proportional ability for running ganged servos as the DX18 would have, plus two on/off channels for stuff like retracts and ignition kill.
Futaba did the same deal when they upgraded the 8Fg to 14 channels. Futaba did the same thing in the 8FG, where they left the original 12+2 format in the software to allow lower latency when the extra channels are not being used.
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Old 09-24-2012, 10:18 PM   #16
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Guess it's all bang for buck at the end of the day. It would be unreasonable to expect quite the same features and performance from a $750 Tx as you get in a $3500 Tx

We all have our budgets and needs. At the price I paid (equiv of $285 US) for the Tx, three receivers and a telemetry unit, all brand new, I'm delighted with my relatively humble DX8. It does more than I need or am likely to need, a slider or two would have been nice but for the price I'm not complaining.
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Old 09-24-2012, 10:52 PM   #17
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Sounds like you got a smoking deal on your DX8
On this side of the Pond the 18MZ lists for $2999.99, but you can get some much better deals, but still waaaay too much for me and my flying needs
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Old 09-24-2012, 10:59 PM   #18
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Originally Posted by pilotpete2 View Post
Sounds like you got a smoking deal on your DX8
Yes, I got lucky on an eBay auction They are a good bit more than that list price.

I was guessing at the 18MZ price as I've never seriously looked at one, way out of my range, but if money was no object
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Old 06-06-2013, 01:28 AM   #19
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Any updates on the new DX18?

P.S. I am a treehugger, just not when my plane is in one!
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Old 06-07-2013, 03:22 AM   #20
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Originally Posted by Victory Pete View Post
Any updates on the new DX18?
"new" DX18? Do you mean the QQ? Havent heard anything official yet.
What did you have in mind?
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Old 06-07-2013, 03:32 AM   #21
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Couple of decorative features... no info on the "special programming" its supposed to have.

The plastic coating of switches could be done easily in any color you want. Plasti-Dip.
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Old 06-07-2013, 04:20 PM   #22
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There is a video here that goes into some of the programming differences. Hard to understand why these features would not go into the standard DX18. Maybe when the 2000 QQ's are gone.

http://www.horizonhobby.com/article/...ique-somenzini
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Old 06-07-2013, 06:15 PM   #23
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The only added software feature that matters is the less than 1% mixing in the 0-10% range ... and they really didn't go far enough with that...should be 0.1% increments in that range.

The 6 (or more) servo ailerons you can do with the programmable mixes.

The rest of the special package looks kind of neat... but I'm not all that impressed with the decals dog tag and signed certificate.

***************

I have not downloaded the newest Airware for my DX-18 (not QQ. got mine before the QQ version came out) I've been happy with it as is.
The built in mixing functions are powerful enough I haven't "played with" user programmable mixes yet. That is saying something, because I have pushed the limits and found things that other radios could do that the manufacturers said they could not do.
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Old 06-07-2013, 10:06 PM   #24
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I guess what matters is an individual choice. Other things mentioned in the video look much more useful to me than 0.5%.
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Old 06-14-2013, 03:43 AM   #25
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Originally Posted by Turner View Post
There is a video here that goes into some of the programming differences. Hard to understand why these features would not go into the standard DX18. Maybe when the 2000 QQ's are gone.

http://www.horizonhobby.com/article/...ique-somenzini
Guess what - we sold out of DX18QQ's yesterday.

Here's a list of the differences:

* Origin mixing
* 3-pos throttle trim
* 0.5% mixing
* Gyro gain on knob
* Editable Flight Modes (makes Acro mode like Sail mode)
* Acro Pitch control
* 6-aileron wing
* Canard/Elevon
* Powerup Logo
* Monitor on roller (no need to click and roll to bottom of menu)

* User-select image
* SD import destination (user can pick which model to import to)
* Sound adjustments

Andy
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