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Blade › Blade 350QX2 GPS fails
10-18-2015 08:58 PM  31 months agoPost 1


Rochester, NH USA

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Sorry if I put this subject in the wrong forum. My Bad!!

I've had my Blade 350 QX2 quad RTF for 5+ months and added a Horizon GB200 gimbal with Mobius (unshielded) camera. I adapted the GB200 to accept the Mobius. Flying with a Spektrum DX6i radio. Had a few good flights and excellent videos using my older Mobius camera. All flights in Safe mode. NO videos transmitted. NO transmitter attached. Just videos on a microSD card. Average time to GPS set, about 2+ min. Yes, I realize even 2 min to GPS is way too long.

So……..My next setup was as follows:
Controller: Spektrum DX6i.
I mounted the TX on the top front of the quad. Antenna vertical.
Regardless where I put the TX, and Mobius camera, I can't get a GPS fix.
I've taken the (disconnected) TX off the quad. No GPS!
I've taken the (disconnected) Mobius off the quad … No GPS.
All wiring to attach the above, removed.
Both antennas running down the long legs seem OK.
The quad has the original BIND (RTF) as sent to me from Horizon.

Now the problem!
I want to do FPV, thus combining my new Mobius (shielded), with a small transmitter (TX) (shielded with copper foil). Skyzone goggles and FoxTech 7 in. video monitor. I get excellent videos in my house from Mobius TX'd to either goggles or video monitor with the quad setting on a table.. The quad is not on in the house. Haven't taken quad out with all attached, because of GPS fails outside.

Currently, I have the quad apart and have used aluminum tape to cover the inside area base which is above the gimbal mount. Also, the foil covers the bottom and sides of the battery cage. Upon opening the quad, I see that the square, gold-covered GPS antenna (I'm presuming that's what it is) is mounted vertically against the battery cage. The (postage-sized GPS unit) is mounted on the right wing next to the battery opening.

I've thoroughly checked for any wire or plug-ins loose or broken. Everything appears OK.

I have recd. a reply from a tech at HorizonHobby, suggesting I check the on/off of the GPS by following the directions on page 8 of the Blade manual. However the directions refer to utilizing an illustration of an older Spektrum controller--- without recognizing that I'm using a Spektrum DX6i that has different switches. Don't they read what we send them?? I replied to Horizon that I don't have the type of controller that is referred on pg 8, and am awaiting further instructions.

So--- While I'm awaiting further from Horizon and any possible help from this and other forums I've joined, I'm going to take the quad lower half (with all the wiring, etc.) my DX6i controller, hook up a battery, try to see if I can get a GPS (solid green) fix outdoors in my large open grassy fields. I've loosened the gold-colored GPS antenna from the side of the battery cage. The multi-strand of wires on it are long enough to place the aerial back up in the square section on cage top. The single wire running to the GPS unit is too short. I'll have to strip in a longer piece.

Wish me luck!

Sorry that this thread response is so long. I feel I need to provide detailed info in hopes someone has an answer to a fix.

email from Horizon last Friday:

Thank you for contacting Horizon Hobby.

"The 350 QX2 was not really designed for FPV use. [Now they tell us!!!] With all of the electronics so close together it may be very difficult to get GPS lock and not to mention more electrical noise. You can also try checking and verify there is no weak connections or any damage with any of the wiring. You can also try and reposition the GPS receiver/antenna up higher and/or away from the other electronics. Hope this helps."

Albert Y.
Product Support
Horizon Hobby, LLC


Thanks for the SOAPBOX!

Rick Mac
Response can be thru this forum, but especially to my special email at

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