JR-9303 2.4 Field Results

[Pale Rider]

	Quote: Originally Posted by bodywerks
	Here's my install in a 35% Extra 260 with CF prop, spinner, wing tube, and pipes:

Great ideas there! I will certainly be using some of them in my Yak

Horizon just changed their "expected" date from Late Sept to early October

[Robin]

Anyone using the AR 9000 in a comp arf plane? I've been struggling to find good locations for the rxs in my 3M classic Extra even have the main rx mounted way up high in the canopy space and still getting relatively high fades. Have over 10 hours with smaller 50cc size no problems only some observations to pass on.
Tx by the way is a PCM 10 with the spektrum module and UK version so less power output than you guys
What is the power output of the American sets? UK is 100mw.

The A rx seems to max out at 255 never seen more even when the B has logged much higher.

Generaly getting frame losses of 20 or less on 10 min flights with every 4th or 5th logging much higher up to 86 frames lost worst case no holds, yet!

These high readings have also been seen following low ones even when the tx has not been turned of in between flights ie its still locked onto the same channels so no chance of having "picked" a noisy channel, the rx being reset in between.

As yet I've not had the confidence to fly the big extra with this kit after the initial high readings until I get some more experience and a definitive guidline as to what frame losses are acceptable/unacceptable the manual is vague to say the least.

Idealy the logger would record faes and frames vs time so we could see just how far apart the dropped frames are, could be my 86 were spread evenly over 10 mins in which case fine. Also seems the main rxs with half aerials seem to get more than twice the fades so might be good if they came out with full aerials like the remotes and even had only one rx in the main body with 3 remotes giving us much more options in the more difficult setups.

Finaly any one able to tell how long one can have the remote extension cable I'm aware that spektrum sell 36" as a max however it would be nice to try a remote rx say at the top of my extras fin away from any carbon.

cheers
Robin

[Flyinrazrback]

Robin, if you look back in this thread a bit your will see a pic of my install in my comp arf mx2. Works great, not a single issue. I am using one short remote antenna on the side of the fuse next to the main rx, and a 18" long satellite rx back on the opposite side of the fuse.

[Robin]

Many thanks, missed that.
Any chance you could post some typical fades and frame losses with times please?
cheers
Robin

[Pale Rider]

What about mounting one of the satellite rx's on the outside of the fuse in a pipe tunnel ? (of course if using a pipe this wont work)---would that help in reception?

[bodywerks]

Flew my 35%er with the 9303 today. 360° range check yielded a maximum of like 13 fades on one rx, and only a handful on the remaining ones. Of course, zero frame losses and zero fades over the course of just over one minute.
First flight was about 5 minutes, and included some point rolls, hammerheads, snaps, loops, and a full circle out in front of me. Max fades on one antenna was like 27, all others were in the teens. I did have one lost frame, but zero holds. I think this is quite satisfactory! Plane felt smooooooooooth in the air, and totally locked in.

[Pale Rider]

Cool! Any issues with vibration affecting the satellite rx mounted on the balsa stick you have near the fuel tank ?

[bnaderi]

Has anyone tried manually transfering a JR10x program to 9303?

[1bwana1]

Nick,
That sounds like a very solid installation, we have not been able to come close to those numbers.

Pale Rider,
I don't think it is as simple as moving the antenna out of the fuse. I know people who have tried this with poor results. One very well known flyer told me that he had moved two of his remote RXs out into the wing tips thinking that would give virtually no fades. In fact his numbers were much worse so he moved them back into the fuse. I think placement an orientation is not intuitive with these systems. I hope the rules will become clearer as we get more experience.

[Pale Rider]

Well thats good info--thanks! Wont even bother experimenting with that---Ill prolly stick the satellite like Werks did or up in the turtledeck

[bodywerks]

No problem at all with the receiver on the stick - it is supported at the base with 1/4 tri-stock on both sides. Besides, the rx only weighs like 5 grams.
I will tell you how I determined my antenna setup. I visualized line of site to each rx, forgetting about wood, covering, etc., and accounting for metal CF and anything else that might attenuate the signal. Then I put the plane in a slew of various positions and make sure I can "see" at least one of the receivers. If I can't, I know I can expect fades or other losses. In the end, one up high, one down low, and one of the three perpendicular to the others is what seemed to yeild the best "vision". I am quite satisfied with only one frame lost in a 5 minute flight, and that could have been on the ground during power-up or taxiing out.

[Robin]

Any one know the power output of the 9303 and the modules?

[Pale Rider]

	Quote: Originally Posted by bodywerks
	No problem at all with the receiver on the stick - it is supported at the base with 1/4 tri-stock on both sides. Besides, the rx only weighs like 5 grams. I will tell you how I determined my antenna setup. I visualized line of site to each rx, forgetting about wood, covering, etc., and accounting for metal CF and anything else that might attenuate the signal. Then I put the plane in a slew of various positions and make sure I can "see" at least one of the receivers. If I can't, I know I can expect fades or other losses. In the end, one up high, one down low, and one of the three perpendicular to the others is what seemed to yeild the best "vision". I am quite satisfied with only one frame lost in a 5 minute flight, and that could have been on the ground during power-up or taxiing out.

So do you think a single remote is enough on a 35% ? I guess having 2 of them isn't a bad idea--they pretty cheap

[Flyinrazrback]

pale, I used the single remote for 150+ flights on my 42% dalton with zero problems, I went with the second long one just because I could in my mx2. I mounted my stuff in places that I normally would mount a 72mhz rx, etc, and it works fine without having to run antennas up in the canopy, etc. Granted, my installs are not birds nests though.

[bodywerks]

having a second remote rx is a good idea on anything, IMO. $29 worth of insurance.