Anyone getting interference on a T9X

pgregg88 · Post by **pgregg88** » Tue Jan 24, 2012 9:23 pm

Friends,

My brother and I both have a Turnigy 9x with er9x installed. My transmitter (regardless of receiver - I've tried several) starts responding in slow motion if the second T9x is turned on?

Has anyone else experienced this or seen threads on this topic? If you can point me in the right direction, I'd appreciate it.

Thanks,
Preston

Post by **cre8tiveleo** » Tue Jan 24, 2012 11:27 pm

What versions of the module are they? Guid issue perhaps

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pgregg88 · Post by **pgregg88** » Wed Jan 25, 2012 5:38 am

I'm on the road right now, but will report back asap. Thanks.

Preston

pgregg88 · Post by **pgregg88** » Wed Jan 25, 2012 5:47 am

I've confirmed that both models are the newer TM0002 module. Can you tell me more about the potential GUID issue? I've done some searches, but I'm not finding anything.

Thanks,
Preston

Post by **Rob Thomson** » Wed Jan 25, 2012 6:49 am

Does it help to do a re-bind?

Most likely you have either a faulty module - or receiver!

Sent from my iPhone using Tapatalk

Post by **jhsa** » Wed Jan 25, 2012 8:07 am

You could do a little test.. bind the receiver from one to the other and vice versa.. if the same radio does the prob then it's the module.. if the other radio does the problem it might be the receiver..

Post by **cre8tiveleo** » Wed Jan 25, 2012 10:34 am

Guid issue: it's a mass produced radio. They may not adhere 100% to industry standards. There may be duplication or other forms of defect.

Just trying to throw ideas out. Does the 'lag' occur with any other turnigy style radio? Have you reflashed the original firmware?
Do you bind with both radios on?

Post by **cre8tiveleo** » Wed Jan 25, 2012 10:40 am

Is the antenna soldered on / connected properly? No kinks or nicks in the wire anywhere?

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ReSt · Post by **ReSt** » Wed Jan 25, 2012 1:29 pm

You could also bind both receivers to the first transmitter. Then test. The servos on both receivers should run synchronously.
Then switch on the second transmitter. Continue testing. There should be no influence to the receivers, bound to the first transmitter.

Bind both receivers to the second transmitter and repeat above procedure.

You should see, which combination fails.

Reinhard

pgregg88 · Post by **pgregg88** » Thu Jan 26, 2012 5:18 am

Thanks for all of the responses. I've definitely tried rebinding and multiple receivers. I haven't tried swapping receivers. I know that I don't get interference from a Spektrum. I do think I received interference from another radio at the park. The radio wasn't a 9x, but I don't know what it was.

I'll do more testing as soon as I can connect with my brother and report back. Again, thanks for the help.

Preston

HAL-9000 · Post by **HAL-9000** » Sun Feb 05, 2012 8:40 pm

Hi,

Previously, I owned besides Turnigy 9x, a Hobby King HKT6A. I've noticed interference, or locking out of HKT6A, but only, when 9x was ON, and HKT6A was powered OFF and ON. It looked like 9x occupied channel of HKT6A. Besides that, I've never had any problems with interference on 9x, and there are sometimes up to 3 of us using FrSky moduled 9x's at the field.

HAL-9000

pgregg88 · Post by **pgregg88** » Mon Feb 20, 2012 5:11 pm

I tried every possible test my brother and I could come up. The interference always happened on the same radio. I upgrade to FrSky. Works great!

Preston

ReSt · Post by **ReSt** » Mon Feb 20, 2012 5:57 pm

HAL-9000 wrote:Hi,

Previously, I owned besides Turnigy 9x, a Hobby King HKT6A. I've noticed interference, or locking out of HKT6A, but only, when 9x was ON, and HKT6A was powered OFF and ON. It looked like 9x occupied channel of HKT6A. Besides that, I've never had any problems with interference on 9x, and there are sometimes up to 3 of us using FrSky moduled 9x's at the field.

HAL-9000

This behaviour is normal to the old version1 HK6TA!

The HK6TA rf module has a printed antenna on the board. When it is powered on, it obviously checks for a free channel. But it doesn't find one, when there is a frequency hopping system nearby. (It sometimes gets bound within a timespan of up to several minutes). HKT6B, the new frequency hopping version, also has this antenna on the board, but the wire is interrupted, the antenna not connected. This TX does not have that problem.
So 'simple' solution is, interrupt the antenna wire near the module and your problem is gone.

There were some posts in the RCgroups Discussion 'Another new 2.4GHz system!' that exactly descibed this.

Reinhard

tedbmoss · Post by **tedbmoss** » Thu Aug 29, 2013 7:12 am

This is most likely not an antenna problem but a known problem with some turnigy tx's trying to use the same channel. As you noted, Frsky does not have this problem. I switched to a Frsky system before my first flight and have had no problems yet.

Post by **ShowMaster** » Thu Aug 29, 2013 3:05 pm

I set my Taranis down on a bench at the field next to a JR DSM2 system that was there and in and his servos started jittering a lot. I moved away and it stopped. My plane was ok. Good for me, upsetting to him.

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