Register Now

hypnotoad · 07-26-2015, 08:08 AM

Hi,
I have decided to buy a new tx to upgrade from a dx6i to either the dx9 or dx7 G2. I was wondering if the dx9 had any advantages over the dx7 that would make the extra $100AUD I would have to spend for the dx9 worth it.
Thanks in advance for any replies.

flightengr · 07-26-2015, 08:16 AM

The biggest differences that leap to mind are the battery, the number of flight modes, and of course the number of channels.

The DX9 is designed to use only rechargeable batteries, so it has an integrated charging system including a charge status light. The DX7 is based on the DX6, so what they did for the DX7 was to design a battery pack with a charger that fits in the space of the AA battery compartment. It still works fine, but there is no light on it.

The DX6 and DX7 are slightly handicapped in that they only allow you to set up flight modes on a single switch, for up to three modes plus Hold. The DX9 lets you have five modes across two switches plus Hold.

Finally, you'll have to decide if you'll take advantage of 9 channels over 7. Things that typically chew up channels are gimbal controls on a multi-rotor heli and accessories that add realism on planes like retractable landing gear, flaps, lights, and so on.

Around the time the DX9 came out, there was talk about being able to adjust gyros for FBL helis using the transmitter. CP helis usually have one adjustable gyro for the tail hold that's often programmable from the transmitter, using one channel. If you really had a system that let you adjust all three axes from the transmitter, then that would be three channels. I personally haven't even read about such a thing yet, but I also don't follow FBL systems too closely.

They're both good transmitters, so I don't think you'll go wrong either way.

hilarious · 08-22-2015, 08:52 AM

hello,
can you activate and deactivate the timer on these radios just by moving up and down the throttle stick?
thanks.

flightengr · 08-22-2015, 09:27 AM

Yes. You can choose to have the timer start when the throttle goes over a certain amount you configure, and you can then either have it keep running or you can have the timer stop when it goes below that amount.

Gyropilot · 08-22-2015, 04:59 PM

The DX9 has a two antennas for a dual diversity signal. I believe the DX7 doesn't.

The dual diversity signal is supposed to reduce chances of signal fade (or complete signal loss) at the receiver.

flightengr · 08-22-2015, 06:44 PM

There's a full comparison on the chart mentioned here.
https://www.helifreak.com/showthread.php?t=708372

07-26-2015, 08:08 AM	#1 (permalink)
hypnotoad Registered Users Join Date: May 2013	Dx7 or Dx9 Hi, I have decided to buy a new tx to upgrade from a dx6i to either the dx9 or dx7 G2. I was wondering if the dx9 had any advantages over the dx7 that would make the extra $100AUD I would have to spend for the dx9 worth it. Thanks in advance for any replies. __________________ What are you doing looking at this post? GO FLY! blade nano cpx \| JR forza 450 -Harry

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

07-26-2015, 08:16 AM	#2 (permalink)
flightengr Registered Users Join Date: Sep 2013	The biggest differences that leap to mind are the battery, the number of flight modes, and of course the number of channels. The DX9 is designed to use only rechargeable batteries, so it has an integrated charging system including a charge status light. The DX7 is based on the DX6, so what they did for the DX7 was to design a battery pack with a charger that fits in the space of the AA battery compartment. It still works fine, but there is no light on it. The DX6 and DX7 are slightly handicapped in that they only allow you to set up flight modes on a single switch, for up to three modes plus Hold. The DX9 lets you have five modes across two switches plus Hold. Finally, you'll have to decide if you'll take advantage of 9 channels over 7. Things that typically chew up channels are gimbal controls on a multi-rotor heli and accessories that add realism on planes like retractable landing gear, flaps, lights, and so on. Around the time the DX9 came out, there was talk about being able to adjust gyros for FBL helis using the transmitter. CP helis usually have one adjustable gyro for the tail hold that's often programmable from the transmitter, using one channel. If you really had a system that let you adjust all three axes from the transmitter, then that would be three channels. I personally haven't even read about such a thing yet, but I also don't follow FBL systems too closely. They're both good transmitters, so I don't think you'll go wrong either way.

08-22-2015, 08:52 AM	#3 (permalink)
hilarious closed Join Date: Apr 2015	hello, can you activate and deactivate the timer on these radios just by moving up and down the throttle stick? thanks.

08-22-2015, 09:27 AM	#4 (permalink)
flightengr Registered Users Join Date: Sep 2013	Yes. You can choose to have the timer start when the throttle goes over a certain amount you configure, and you can then either have it keep running or you can have the timer stop when it goes below that amount.

08-22-2015, 04:59 PM	#5 (permalink)
Gyropilot Registered Users Join Date: Dec 2014 Location: SE Arizona, USA	The DX9 has a two antennas for a dual diversity signal. I believe the DX7 doesn't. The dual diversity signal is supposed to reduce chances of signal fade (or complete signal loss) at the receiver.

08-22-2015, 06:44 PM	#6 (permalink)
flightengr Registered Users Join Date: Sep 2013	There's a full comparison on the chart mentioned here. https://www.helifreak.com/showthread.php?t=708372

Register Now

Log-in