Moderator Comment by Hooks on January 3, 2010 at 12:00pm

I like the mods for this transmitter.
Turnigy 9X 9Ch Transmitter

But it's just a shame that most head tracker and joystick interface are made for the Futaba sh... :-(
Someone told me that JR got issue for bad plug design also low voltage out. Thats why all these things are made for Futaba.
Like this PnP Joystick

Moderator Comment by Sgt Ric on January 3, 2010 at 12:38pm

Hey wait a minute... are you guys doing a paid infomercial?

Don't go dissing my Futaba now.

3D Robotics Comment by Jordi Muñoz on January 3, 2010 at 1:01pm

Sqt Ric,
I wish... ;-) .. But if they let me choosee between a Spektrum DX7 or Futaba FUTK7004 7CH, i will absolute choose Dx7, the software is more advanced and the receivers have diversity and configurable fail safe for all the channels (not just throttle). I also have a Futaba 9Ch and JR 9ch (both 2.4Ghz), and the software for JR is WAY better (and you can do any mixing you can imagine with JR, with futaba you can't)... Not to mention that you can do the booster trick and other goodies. But yes Futaba is way more commercial. Should i invent the PPM translator from Futaba to Spektrum? That way all the Futaba stuff will work on JR/Spektrum... ;-)

Moderator Comment by Hooks on January 3, 2010 at 1:12pm

If it would be possible to make a something like a Plug for the JR so all these Futaba things would work on a JR TX. That would be very nice..

3D Robotics Comment by Jordi Muñoz on January 3, 2010 at 1:14pm

But anyway i would like not to discuss about Spektrum vs Futaba (is like religions and politics) i have to say that many people had issues with Spektrum as usual and others with Futaba. This post is just about a cheap solution for 9Ch (very important in the UAV world) and the possibility to adapt the boost for very long distance missions (also very important). A key point here is the diversity receiver that Spektrum offer, this feature is the only one that guarantee you reliable reception when you are far away. One of the receiver have 4 built in receivers!! In that way you can place it all over the airplane in different orientations, if the weak signal is not able to reach any of the receivers for any reason is likely that other will do it. Do you remember when you had to move your bunny antennas from your old TV to get good image every time to change the channel? Well imagine that you can put 4 antennas in different positions, so the one with best reception is the one that will be used.

3D Robotics Comment by Jordi Muñoz on January 3, 2010 at 1:29pm

Hooks, developers of those gadgets they only need change a BIT so make compatible with JR/Spektrum, the PPM frame is just inverted. The only bad point is that you need external battery. =/ But with ArduPilot mega the only purpose of the radio will be redundancy. ;-)

Comment by Sam on January 5, 2010 at 4:50pm

Just an fyi, the cheaper airmod (the $110 one) has the same tx module, so it will work with the turnigy 9X radio. The only difference is in the receiver, the $110 kit has an AR7000 ($100 by itself, so the air module is in essence $10), the $180 kit has an AR9000. 7 channels vs. 9 channels, both receivers have the same failsafe abilities (important-the AR6110 series and below ONLY HAVE THROTTLE FAILSAFE!), the only real advantage the AR9000 holds over the AR7000 is 2 extra channels and one more remote receiver, which is important if you are flying a larger plane.

Comment by RobC on January 6, 2010 at 7:56pm

Would this combo be a good "first" receiver for someone starting out? Or would you go with a different model?

3D Robotics Comment by Jordi Muñoz on January 6, 2010 at 8:47pm

Robert,

How much you are willing to spent?

Comment by Sam on January 6, 2010 at 9:52pm

I personally recommend the Spektrum DX7, hands down the best radio I have used (ok, the X9303 and JR 12X are better). If you search deep enough, a DX7+AR7000 should set you back $250 at the most. I picked mine up brand new for less than $200. The for sale section on rcgroups is your friend.

You are taking a big risk with the Turnigy 9ch radio. There are software issues, and the overall quality is not going to match a JR/Spektrum or Futaba setup. This is the reason it is recommended to switch out the module and receiver to Spektrum.

If you are planning on staying in the hobby, its recommended to buy a proper radio stack. Loosing a plane due to junk radio equipment is not worth the risk imo. Also, a native Spektrum solution is much nicer than the module, as the modules antenna's and connector system are marginal at best. The only real reason to have a modularized system is if you currently own 72 mhz gear and need to switch between spektrum and 72.

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