ORIGINAL: opjose
ORIGINAL: mranga
OpJose, I had the exact same issue with TWO spektrum 6200 (original) receiver as well. In fact I sent it back to Horizon hobby and they replaced it with a AR7000 and an AR600 after claiming there was nothing wrong with the reciever.
Interesting... I've never had a single problem with the AR7000's.
I can second that. No problems with AR7000 (my son flies them in a couple of his planes) but my woes were with AR6200.
ORIGINAL: mranga
The two most compelling pieces of evidence are :
1. In both cases, the antenna was pointed straight at the plane ( I wish I were a bit more aware about radio wave propagation shame on me!) and (2) in both cases the receiver was using a 4.8 volt 1500 mah battery (I could swear I charged them well each time) but your point about amp draw is well taken.
The ''donut'' theory is interesting, but you have to remember that in most cases if you point the antenna straight out, the plane still tends to be relatively close in and gets a strong signal.
For the donut theory to have a large effect you have to be flying the plane out to an extreme.
In my case, EVERY time it happened the plane was pretty close in.
In this case too, the plane did not seem that far away (maybe around 200 feet). In any event, so as to not take further chances, I pulled out the old antenna and ordered a new one. Interestingly, at least two times of three, I can swear the incident happened in about the same spot. Is there a way to measure radio interference ( any instrument ) that one can walk around the field and chart such things. ( It might be my imagination at work here but I could swear the incidents were around the same spot anyway.)
ORIGINAL: mranga
In the latest crash the plane went out of control, came back into control and went out of control again. It appears to have something to do with radio signal OR (less convincingly) about battery. I'll say in the Orange's defence that this is the first such incident after many flights. ( However, one is enough! )
ORIGINAL:OpJose
yup identical to what happened to me.
I wonder if the firmware of these particular ''orange'' RX's are at fault?
I've had absolutely NO such problem flying the cheaper, shorter range 4ch Orange RX park flyer receivers out to ranges far in excess of when I had my problems. But I've given up on the 6ch version and the AR6x00's.
I also just picked up the 9 channel Orange to give that a go and see if things are different.
BTW: I also tried the 6ch with the satellite RX's with exactly the same results.
This was also a satellite RX setup.
I'd say out of the last 30 or 40 flights ( which were on different receivers but all of them were ''orange rx 6 ch. with satellite''), this is the first such incident.
I am also wondering if this happened because the binding of transmitter to receiver (i.e. solid red light on the receiver) did not happen before takeoff and would it make sense to put a little hole and cover it with clear monokote so as to see the device before take off and thereby ensure the link is solid.
ORIGINAL: mranga
Three incidents are enough to start me wondering about the Spektrum Technology itself although I am more inclined to beleieve it was my fault if others are having good luck with it.
ORIGINAL:OpJose
I don't think it's a Spektrum problem per-se. We have guys flying their Spektrum RX's BELOW a line of site to the plane, ( our field is up on a plateau ) without any signal loss, frame drops or other glitches.
Every time someone dips below sight, we all expect to see a fireball arise!
ORIGINAL: mranga
From the looks of it would it suffice to test your battery with a two amp current draw (for how long?) ? Is that being too conservative? Is there a ball park number one can use to test out before going airborne?
It's not the AMP draw per-se. It's the resulting voltage drop.
Normally draw spikes from servos are fairly quick. The filtering caps should deal with it so the RX never sees a drop.
I'll bet that they are not doing their job causing a reboot.