Independent tests prove lack of frequency hopping with XPS

[Toumal]

I hate to say it, but that doesn't cut the cheese either. XPS has to survive an interfering 2.4 GHz transmitter being switched on instantly. It has to survive and hop to a free channel. That's the basic test premise. Not some "slowly rising noise floor" or esoteric stuff like that. You fly, and someone switches on their FPV system on the same channel, or an ATV station goes on air across the valley.

That's simply it, and frankly it wouldn't be up to us or Kiwi to prove this, but it's up to the manufacturer.


To anyone considering doing tests: Please make sure you measure the exact distances between the individual components so the test is repeatable.

[wrightme]

	Quote: Originally Posted by BaldEagel
	For those guys who post on here infrequently, which I am one, the problem that seems to be happening is that some people are on here defending XPS in a manic sort of way without any proactive suggestions on how we can prove or dissprove JD's claims, you know who you are, so if you are not one of these don't get upset when someone suggests that some posters have a hidden agenda. And to you others that support JD and his claims for the XPS system please let us know how we need to specifically test the system to make it hop, if we can then test and prove that, the thread will have no further purpose and will be closed down, if not the thread will continue. Mike

First, you allege that there are those here who are either "defending XPS in a manic sort of way" and there are others that "support JD and his claims". Sounds like a possible description of only one side of the discussion.

Here is a pro-active suggestion. Spend more time flying, and less time arguing about systems you don't use or intend to use. Stating that I use XPS should not require you to fit me into one of YOUR definitions. AND, the most logical place to use any "manic sort of way" description of actions here in this discussion is misplaced with those who actually use XPS with no difficulties.

I also quite disagree with the patently unprovable false allegations of some that ANYONE who doesn't speak badly about XPS is either:
1) a "fanboy"
or
2) a "paid shill"
or
3) JD himself in a multiple-user account format

The first is simply derogatory.

The next two are simply laughable.

[Gordito Volador]

	Quote: Originally Posted by wrightme
	I also quite disagree with the patently unprovable false allegations of some that ANYONE who doesn't speak badly about XPS is either: 1) a "fanboy" or 2) a "paid shill" or 3) JD himself in a multiple-user account format The first is simply derogatory. The next two are simply laughable.

Maybe you have been affected by the "XPS Reality Distortion Field". There is a history of these things happening in the past on other sites plus the Paintball world.

[GBR2]

Whatever Jd's questionable/unquestionable past or how you feel about his business practices, in the end it really comes back to does the hardware provide the frequency redundancy that most modelers expect, which we know Spektrum and FASST have as part of their designs. As to other possible issues with the hardware I guess they can be discussed in other threads.

[Woketman]

	Quote: Originally Posted by wrightme
	I also quite disagree with the patently unprovable false allegations of some that ANYONE who doesn't speak badly about XPS is either: 1) a "fanboy" or 2) a "paid shill" or 3) JD himself in a multiple-user account format The first is simply derogatory. The next two are simply laughable.

Fanboy!!!

[XJet]

	Quote: Originally Posted by wrightme
	I also quite disagree with the patently unprovable false allegations of some that ANYONE who doesn't speak badly about XPS is either: 1) a "fanboy" or 2) a "paid shill" or 3) JD himself in a multiple-user account format The first is simply derogatory. The next two are simply laughable.

So do you believe JD's claims that I (and some others) are paid shills for Spektrum or Futaba?

[sweetpea]

What I do believe is that Xjet does have some "other interests" in 2.4 such as his website and his tinkering with releasing his own form of 2.4 (whether its a kit or a complete system even if you its a no profit to you). Whether this matters to you is your own personal feelings. To me it matters slightly, along with his test results never being published (regardless if Kiwi's test confirms your own)

Kiwi on the other hand not only did the tests but showed them (Bravo!). Kiwi has not shown any outside interest other than getting to the truth.

I also don't fall into any of the "3" categories. I'm not a Fanboy......sure as heck I'm not getting paid or I'd be flying XPS in all my planes (right now its only in foamies) and I'm certainly not JD himself. I do think XPS has some great potential and the advertising was misleading (outright lies I disagree with). I do also think its been way to long for any of the features to come out.

[wrightme]

	Quote: Originally Posted by Gordito Volador
	Maybe you have been affected by the "XPS Reality Distortion Field". There is a history of these things happening in the past on other sites plus the Paintball world.

Do you use, or have you used any XPS systems at all?

[wrightme]

	Quote: Originally Posted by Woketman
	Fanboy!!!

Typical. Failing a decent position to argue from you, as normal, resort to name-calling.

[Woketman]

	Quote: Originally Posted by wrightme
	Do you use, or have you used any XPS systems at all?

Ask him if he has lost a plane to 2.4 GHz. If the answer is no, then that lessens the probability that he has XPS!

[Woketman]

	Quote: Originally Posted by wrightme
	Typical. Failing a decent position to argue from you, as normal, resort to name-calling.

Super Fanboy!!!

[XJet]

	Quote: Originally Posted by sweetpea
	What I do believe is that Xjet does have some "other interests" in 2.4 such as his website and his tinkering with releasing his own form of 2.4 (whether its a kit or a complete system even if you its a no profit to you).

Well I challenge you to elaborate on the "other interests" in 2.4 you speak of.

I use 2.4GHz technology in the UAV field (something I've always disclosed) - but I'm not selling anything in the RC model field that could in the remotest be considered having any form of commercial "interest" that might be competing with XPS or other RC systems. If you're going to make the accusations, at least be ethical and honest enough to provide the evidence.

	Quote:
	Kiwi has not shown any outside interest other than getting to the truth.

I think the same applies to me -- it's just that I spotted the typical profile of someone who is far less than honest in their claims the first minute I read JD's promises in respect to XPS. Having already worked with the technology and the modules he was working with, I knew right from the get-go that he was making promises he simply could never fulfill.

	Quote:
	I do think XPS has some great potential and the advertising was misleading (outright lies I disagree with). I do also think its been way to long for any of the features to come out.

Why do you disagree that JD has lied?

He said it would hop away from an interfering signal and it doesn't. Even after promising proof, he has failed to deliver. The burden of proof is on his shoulders and he can't provide it. So, until proven otherwise, that is just a lie, straight and simple.

Now that may not matter to you -- but I bet it sure matters to all those folks who have lost models to the fact that XPS does *not* work as was claimed. "Marketing" does sometimes (unfortunately) result in people 'overstating" a claim -- but to boldly state something (such as useful frequency agility) exists when it clearly does not is simply a lie, there's no other word for it.

And, if JD would have the backbone to stand up and admit the very critical flaws in this system, I think we'd all be happy. However, so long as he continues to claim it's perfectly fine for turbines, giant scale and other decidedly dangerous and expensive models, then I'm sorry but I find it very hard to accept the guy as an honest, ethical and responsible member of the modeling community.

Excuse me if I'm one of those who are prepared to call a spade a spade.

[GBR2]

"Xjet does have some "other interests" in 2.4 such as his website and his tinkering with releasing his own form of 2.4 (whether its a kit or a complete system even if you its a no profit to you). "

I think those were the other interests Sweetpea was talking about.

[Woketman]

	Quote: Originally Posted by GBR2
	"Xjet does have some "other interests" in 2.4 such as his website and his tinkering with releasing his own form of 2.4 (whether its a kit or a complete system even if you its a no profit to you). " I think those were the other interests Sweetpea was talking about.

But I thought that was just a design of XJets that he was offering for free. I don't think he was going to make any money off of it.

[Kiwi]

Wow.

I have to be going for the record in starting controversial threads so I hope you guys have my back here.

Now this is pure speculation but I have some very good friends in the military who I think will help me out with the next set of tests.

So if JD will give me cut rate on a set up and the instructions on how to test and show the system hopping I am up to the challenge.

It will not be fast as this will be a favour, but the offer is serious if XPS can give me the instructions I can save them the time to demonstrate the XPS frequency agility they advertise.

Guys I love a challenge.