Sudden Loss of Range JRSX600

[joseywales]

Hi I upgraded to a JR SX600 and brushless about a month ago. New servos, JRS6UL Receiver, Brushless speed controller. It flew awesome. Just popped ailerons in. 2 awesome flights now all of a sudden the plane started acting quirky out past 80-100 yards. Sudden turns...jittery etc. I tried 2 different batteries. I land it and walk with plane with TX on and sitting on stump and at about 80 yards the servos / and throttle start jittering, twitching as if it's losing TX signal. TX battery is fully charged. Range used to be limitless..now it's borderline unflyable with quirkiness at 80 yards or so.

Any ideas on what may be wrong? Speed Controller? Receiver going bad? Crystals? Everything is only 3 months old and not many flights on it...zero crashes. I checked anntenna wire and it's solid. Any ideas on trouble shooting this would be super! I'm bummed! Wife is gone for 6 days! Valuable fly time going to waste!

[l8again]

May be getting outside interference? Any locals have R/C's that maybe they didn't have before this happened?

[joseywales]

l8again, tnx for the response!

I don't think it's intereference. No one flying nearby. When I put TX on stump and walk with plane the servos start to jitter at almost the exact same spot (about 80 yards) then it gets worse the further I get until control surfaces flop wildly as if you plugged battery into plane without TX turned on.

I put ailerons on and test flew twice. Perfect flights. 2 nights ago I epoxied 2 dowel rods in the upper wing to keep it flat. The next flight after the dowel rod job was when this happened. 2 more flights after that and same thing. I have to land it ASAP for fear of loss of control.

Would the fact that the jittering occurs at almost the same amount of paces from the TX when it's on the stump maybe indicate an anntenae problem?

[duck9191]

did you move any of the electronics? you might have accidentally warped something around the antennae or moved something too close to the rx. i would try to rearrange the electronics and check out the antenna for any breaks. i used to have some range problems when my battery would push the esc too close to the rx.

[SCC]

Make sure your crystals are pushed home.
Is your TX aerial a srew in type. Sometimes they come loose.

If the above is OK i would buy another set of crystals same ch as you have. Exchange one at a time. If that is the problem at least you wil no which one is the culprit.

If the crystals are OK then i would replace the RX.

As your equipment is only 3 months old maybe you could get it replaced FOC.

[cvrcmember]

Try flying it again tomorrow, most of the time it's radio interference mostly on the low frequency that you are running on, 72 MHz is okay, but 2.4 GHz is the best. It may cost a lot, but it is worth the money when you don't crash because of interference. Hope that helps a little. It could also be your RX.