Independent tests prove lack of frequency hopping with XPS

[XJet]

	Quote: Originally Posted by sweetpea
	Alot of that information was lost because of the extremely negative posts following information like that. So it was XPS forums and they deleted the whole thread.

Haven't you ever stopped to wonder why, of all the 2.4GHz RC manufacturers, XPS attracts the highest level of negative posts and "bashers"?

Coincidence?

A higher level of dissatisfaction amongst users?

If, as JD claims, it's all good for business then why delete those posts that his outrageous claims into question and even the ones that simply ask for evidence to back up those claims?

And if what I've been reading elsewhere is to be believed, there are lots of folks who have made the decision *not* to purchase XPS or who have retired their XPS systems after reading about the hopping issue or having had unexplained model-losses or close calls with the system.

	Quote:
	There is a difference from constructive critiques of the system and then just plain bashing.

But ask yourself -- why would anyone *bash* a system if it were delivering the advertised features and performance?

	Quote:
	I prefer to use the constructive form in hopes the system may have improvements down the road.

That's a good approach -- when you're dealing with a company who is happy to deal with realities rather than fantasies but if we examine events at XPS to date it seems that the only thing which has resulted in *any* action (although it's still just talk with nothing delivered) has been the constant stream of challenges and questions by the "naysayers".

However, having said that, the way that Futaba and JR have responded at various times to problems with their 2.4GHz equipment makes me think that the industry is run by used-car salesmen.

But at least their claims aren't at odds with the fundamental laws of physics and they don't treat customers like mushrooms all the time.

[jonkoppisch]

Have you noticed that unlike last year, there was hardly any coverage of them at Toledo? The only thing I saw was a pic of them holding the graupner turbines... I now wouldn't own a graupner turbine because of the association...

BTW, Put several more flights on my new jet with FASST!!!! Working great!!!!!

FASST 1
xps 0

[KrisW]

	Quote: Originally Posted by jonkoppisch
	Have you noticed that unlike last year, there was hardly any coverage of them at Toledo? The only thing I saw was a pic of them holding the graupner turbines... I now wouldn't own a graupner turbine because of the association... BTW, Put several more flights on my new jet with FASST!!!! Working great!!!!! FASST 1 xps 0

Glad you found a reliable 2.4g home, Jon..

[buttface]

I am going with FASST toooo!!!! And also will be shure to never buy a Graupner.

[Julez]

Well, Graupner is not that bad whenever they happen to choose a good supplier.

[BaldEagel]

	Quote: Originally Posted by buttface
	I am going with FASST toooo!!!! And also will be shure to never buy a Graupner.

No need to knock Grapner as whole, I have a few of there planes and they are good quaility, I think they just got a bad deal and bleived all the hype on the system, I just hope they will realise their mistake and do something about it, otherwise their untarnished reputation in the industry will suffer.

Mike

[Cherokee Jim]

Hey you might want to read the following post before thinking that Only XPS has problems and not Futaba.


http://www.flyinggiants.com/forums/f...st-issues.html



Happy Flying,
Cherokee Jim

[Pale Rider]

	Quote: Originally Posted by Cherokee Jim
	Hey you might want to read the following post before thinking that Only XPS has problems and not Futaba. http://www.flyinggiants.com/forums/f...st-issues.html

Futaba has to do a lot of effin up before they get even close to XPS

[Kiwi]

Cherokee Jim,

Fact is they all have had problems and some are probably still undiscovered.. The difference appears to be the Ostrich effect or the fact that some put the head under the sand and hope the problem goes away or the ones that front up and fix the problems when they arise.

SPEKTRUM took a hiding with the low voltage issue and shielding. They fixed both of those and have a very robust and vastly different system to what they released two years ago.

FASST took a serious beating with the ZGUID issue on the 7C radio and appear to have solved that. At least they admitted there were some rogue radios and came out with a way to find them and fix it. The latest issue mentioned in your link is one individual and before we run off claiming the world is falling I think we need to wait a little while and see if there is a human factor involved. But I'm positive that if there is another FASST issue raising its ugly head there will be a team of FUTABA engineers on it trying to resolve it.

XPS is the same XPS as two years ago. It has not improved, there are new widgets but there have been no redevelopments and no recalls. XPS appears to be a system that has serious shortfalls in some applications and it has no where else to go due to the technology and hardware used to build the system. I'm also sure the XBEE engineers dont give a darn about problems associated with RC as the system was never designed for that application in the first place.

Lastly the fact that FUTABA and JR never ever go into forums and delete threads entirely because they dont like the bad press says something in itself.

If every lockout, every fail-safe etc was the death nell of an RC system then RC would still be a free flight hobby or still on a control line.

[buttface]

Bla blah blah..........XPS ........blah blah blah...........

Thats all I hear anymore.

Face it XPS is DEAD!

[tadawson]

	Quote: Originally Posted by buttface
	Bla blah blah..........XPS ........blah blah blah........... Thats all I hear anymore. Face it XPS is DEAD!

Hardly . . . I think the only thing dead (or dying) is the grey tissue north of the neck in some of the bashers, who choose to not be confused by facts . . . .

- Tim

[buttface]

	Quote: Originally Posted by tadawson
	Hardly . . . I think the only thing dead (or dying) is the grey tissue north of the neck in some of the bashers, who choose to not be confused by facts . . . . - Tim

Oh, We are NOT confused about XPS bro. All we need to know is It causes us to loose thousands of dollars when our 40%er goes in the ground from loss of signal.We are well aware of the facts. I guess you will just have to loose a plane to learn the facts too.
Hey Bro....let us know when it happens to you so we can all say we told ya SO ROFL !!!

[XJet]

It looks as if I'm going to have to get my finger out of my backside and finish the small run of logging 2.4GHz spetrum analyzers I've started here.

There appear to be a certain number of "unexplained" lockouts/crashes with every brand of RC gear and perhaps one of the key questions that remains unknown in most of them is "what did the band look like at the time?"

I've stated on a number of occasions that there will be some flying fields where 2.4GHz (of any kind) will be a risky option, just as 72MHz is risky in some areas. What *would* be useful is for clubs to run a data-logging SA while flying is taking place and then if there is an unexplained crash they can go back and look at the logs for that period of time and see if there's some strong interfering signal apparent.

The SA could even be thrown in a model and flown to altitude to see if there's a distant noise source that's only visible from the air.

Until the noise profile of any flying site is known there's always going to be an element of risk with any 2.4GHz system -- give the very wide (and growing) number of systems that use it without any form of licensing or policing.

[sweetpea]

	Quote: Originally Posted by Kiwi
	Cherokee Jim, Fact is they all have had problems and some are probably still undiscovered.. The difference appears to be the Ostrich effect or the fact that some put the head under the sand and hope the problem goes away or the ones that front up and fix the problems when they arise. SPEKTRUM took a hiding with the low voltage issue and shielding. They fixed both of those and have a very robust and vastly different system to what they released two years ago. FASST took a serious beating with the ZGUID issue on the 7C radio and appear to have solved that. At least they admitted there were some rogue radios and came out with a way to find them and fix it. The latest issue mentioned in your link is one individual and before we run off claiming the world is falling I think we need to wait a little while and see if there is a human factor involved. But I'm positive that if there is another FASST issue raising its ugly head there will be a team of FUTABA engineers on it trying to resolve it. XPS is the same XPS as two years ago. It has not improved, there are new widgets but there have been no redevelopments and no recalls. XPS appears to be a system that has serious shortfalls in some applications and it has no where else to go due to the technology and hardware used to build the system. I'm also sure the XBEE engineers dont give a darn about problems associated with RC as the system was never designed for that application in the first place. Lastly the fact that FUTABA and JR never ever go into forums and delete threads entirely because they dont like the bad press says something in itself. If every lockout, every fail-safe etc was the death nell of an RC system then RC would still be a free flight hobby or still on a control line.

Kiwi--

I would have to argue with you that XPS is not the same system it was 2 yrs ago. Granted that the Hopping technique they use cannot be confirmed by the bench tests and at face value appears to not happen or only happen when things are perfect which is typically too late or just plain doesn't happen.

So if you take that equation out of the mix........they have added XDP, made the RX upgradeable with flashware, changed the case to accomadate more radios, changed some internal features to reduce latencey and decrease the ablitiy of the user to screw things up (like power settings), I'm sure I could go on. These changes are just as significant as Spektrum or FASST changes.

Of course if the new firmware holds true and creates a hop that is noticable (despite Xjet saying it cannot be done) and you then include the long long long awaited telemetry and satellites......I'd say it is on par with the others in fixing its flaws.

I still look forward to seeing your results on Spektrum and FASST using the exact same test parameters you used on XPS to see if they also go into a lockout condition. I don't expect Spektrum to hop and I do expect FASST to hop. I just want to see if the results shown on XPS even matter. If they all 3 fail in the same test we have proven nothing on which system is better.

And isn't that what all this keyboard hucking Hype is about....Which system is better for us the users?

[klhoard]

	Quote: Originally Posted by Cherokee Jim
	Hey you might want to read the following post before thinking that Only XPS has problems and not Futaba. http://www.flyinggiants.com/forums/f...st-issues.html Happy Flying, Cherokee Jim

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This appears to be a RTFM problem. . .
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