Independent tests prove lack of frequency hopping with XPS

[jonkoppisch]

I'm being fair!! You lumped that onto spektrum and not xps when xps claims that it's a problem as well... Seems it's the same for both.. I definitely am influenced by what has personally happened!!!! & with jd's exaggerations well.... But still, fair is fair!!

[Pale Rider]

	Quote: Originally Posted by sweetpea
	I don't think Spektrum changed their cutoff voltage( I need to research that), only once it does cutoff the system looks for the last 2 channels and the reboot time has decreased. So that is more inline with the other two.

Ok that makes sense--I dont think they lowered it either--just a faster reboot time. I think a lot of the problems were/are with the electric setups. Ive never let my batteries get anywhere remotely close to even 5v under a load.

[dick hanson]

[quote=sweetpea;365412]I don't think Spektrum changed their cutoff voltage( I need to research that), only once it does cutoff the system looks for the last 2 channels and the reboot time has decreased. So that is more inline with the other two.
Voltage is an issue on all 3 systems. But Spektrum so far has the worst voltage issue. Something electric fliers might like to know before they purchase a system.


I have heard this over n over -- but in actual practice
don't see it and I have a LOT of electric setups 6100/6100E /6200/7000rx and with quite a variety of ESC/ battery (LiPo and A123 ) power setups
I will say - Spektrum being first on the scene got the brunt of the learning curve (some have never learned tho) so natcherly they got the "the sky is falling" comments--- over n over n over
Having seen other brands of 2.4 operate - it appears to me - if you do it all correctly - the results are the same

Because Spektrum still is the only one haveing itsy bitsy rx - they will -(bet money) continue to be the leader in small electrics.
I simply can not get any of my electrics to fail ---

[sweetpea]

	Quote: Originally Posted by jonkoppisch
	I'm being fair!! You lumped that onto spektrum and not xps when xps claims that it's a problem as well... Seems it's the same for both.. I definitely am influenced by what has personally happened!!!! & with jd's exaggerations well.... But still, fair is fair!!

I'm done arguing this point.

Spektrum has the worst cutoff voltage...period. That was the point of including it in spektrums problems and not the others. I was trying to make the point if you put the systems in the same plane with same gear.....what would fail or be better for each.

I don't care why you cannot understand that was the reason for not including it.

So XPS says this the number one problem with their system. I'm not saying what is #1 or not only that it would show up in Spektrum first so if voltage is your concern you should chose a better powersupply system or a different 2.4

I already said I would take the voltage part and adjust it to include voltage cutoff amounts as a con for all the systems.


I think the issue you are having is XPS told you your crash was voltage related and you don't agree with them. If I am correct, that has nothing to do with what I'm trying to accomplish. So drop it. If not I apologize ahead of time.

[jonkoppisch]

	Quote: Originally Posted by sweetpea
	... Spektrum has the worst cutoff voltage...period. That was the point of including it in spektrums problems and not the others. I was trying to make the point if you put the systems in the same plane with same gear.....what would fail or be better for each....

So it is a competition.. Whether I like them or not was not why I said that! It's a reported problem with spektrum & XPS so it should be listed as such...

Your lack of wanting to list xps with a low voltage problem indicates a bias toward them as well... If not, then I apologize in advance

I was told voltage, I was told servos, I was told battery short, I was told failsafe.... Everything but what it appears to be... Lack of freq hopping when an outside source interfered...

[SleepyC]

[Leseirf]

Man, you got that right!

[KrisW]

My 72 mhz works just fine. . let me know when you guys get this 2.4ghz stuff fixed. . . . . .

[wrightme]

	Quote: Originally Posted by jonkoppisch
	You need to put the battery issue on xps as well.... At least that's what they claim whenever there's any problem!!!!!

It is also what has been reported by the owners of crashed R/C airplanes and helis independently of what XPS suggests. One has only to view the forum over on RCG to see this. I would also go out on a limb and state that the MAJORITY of crash reports on the RCG XPS forum ended up being actual voltage delivery issues, independent of any RX faults. In other words, other than in your jet, when XPS suggested a possible voltage delivery problem, the owner DID forensically CONFIRM a voltage problem that was NOT an XPS failure.

[jonkoppisch]

There has been a lot of voltage issues!! EXACTLY!!! If you've been watching, there's been a few people with other issues as well, ie, the works till it doesn't... Lately I've seen a few more popping up..

[sweetpea]

I guess your right in the competiton sense.......it kinda is. But not quite the way you mentioned it. More like.....for this specific plane/battery/price etc combo what is the correct choice.

I was thinking along these lines. Realize I don't have all the technical crap infront of me right now so some of my numbers are off but I hope you get the idea. I plan to create a table that would display info accross evenly.

Spektrum (current version)

$*** module (fits most module radios)
$** Rx
$*** combo
* year warranty
(2) * in antenna on main RX
ability to hook up 2 satellite RX's with 2 antennas each
ability to hook up multiple main RX's each with their own satellites
locates 2 freqs and stay on them at start up, does not switch
Rx shut down at 3.7v (reboot time of 1 sec) and what servos/motor do at shutdown
capacitor fix for voltage
New Power box type RX for high power consumption planes
End pins (JR plugs need to be plugged in opposite of JR RX's)
Data logger to determine fades and holds. Must be done before power off and cannot be done realtime.
Dedicated radio (DX6/7)
Jr has dedicated spektrum radio (X9303)

Future (no timeline)---

JR dedicated 12X




XPS V*
$*** module (fits most module radios)
$** Rx
$**** combo
Lifetime replacement warranty for any reason
(1) * in antenna on RX
scans to one free signal at start up
No ability to use dual RX format like 72mhz
Freq hop on gradual increase of noise floor (sudden increase no hop)
Rx shut down at 3.1v (reboot time of 1 sec) and what servos/motor do at shutdown
Top pins (end pins for 6ch and others coming)
XDP software to program RX through PC and update software
2 way communication

Future (no timeline)---
Freq hop on all noise level increases
Real Time telemetry
Satellites
universal module that plugs into trainer cord for non module radios
Complete integrated radio version




This was just a quick example.....all the actual fact info in one quick spot. You can then compare radios FACTS without the manufacturer advertising spins or users saying JR is the best because I said so crap.

You should then be able to say......

I'll have a 40% comp arf with some CF in the gear/motorbox with Smartfly equip running a123 batts...I fly IMAC and 3-D with these servos at this voltage.
my budget is approx this. Will the system fit my needs?


Agree/disagree with the format?

[wrightme]

	Quote: Originally Posted by jonkoppisch
	There has been a lot of voltage issues!! EXACTLY!!! If you've been watching, there's been a few people with other issues as well, ie, the works till it doesn't... Lately I've seen a few more popping up..

But you seem to be blaming XPS for a wire coming undone, or a connector breaking, or a servo jamming, or a battery shorting......

If a receiver does not get proper voltage, whatever level it is supposed to be, it will not work. Sure there are other issues. It is RF.

[jonkoppisch]

I didn't have any of those.... I've already went thru it and posted the results by video...

See, this is exactly what we are talking about...

Added: If it had been on 72 everyone beyond a shadow of a doubt would have said interference. Everyone that was there and saw it (quite a large crowd) said exactly that...

[wrightme]

	Quote: Originally Posted by jonkoppisch
	I didn't have any of those.... I've already went thru it and posted the results by video...

I know YOU did, but you were also implying that the OTHER crashes weren't due to something beyond the scope of XPS the company.

[jonkoppisch]

There's been quite a few reported lately that have said it's from other causes.. Was I there? No. Should I automatically assume like everyone else that they don't know what there talking about and it's all battery related? I don't think so.. You're automatically assuming that it is.. It could be voltage. I hope they find out..