Independent tests prove lack of frequency hopping with XPS

[KrisW]

	Quote: Originally Posted by erichevy
	No, I really meant 10 to 15 minutes. I did this test when I bought my spektrum equipment new, a tm8 module for my 9c radio and 5 AR9000 recievers. You realy can't tell how long every time it's going to be when switched off/on quick because it differs, between a minute and sometimes as long as 15 minutes. Meanwhile the led in the module is blinking. Btw, this has nothing to do with quick connect, which is tested by switching the reciever power off/on and not the radio. It is no problem to me anymore, because I know now this "side" effect will happen, and will avoid a quick off/on switching because of that. The quickly swichting off/on is never needed, and must be avoided (NEVER DO THIS WITH FUTABA fasst) but I know now what it will do with my equipment, and because of this, I thought I mention/warn you not to do this while flying, hoping to find a new channel in flight! But now I am curious what you're Spektrum equipment will do when you switch you're radio off/on quick?? (with reciever turned on ) I do not think this is only happening to me! Eric.

Actually it is possible to MAKE your receivers do weird things, if you goofball the binding segment of a spektrum. I accidentaly hooked my Fight Log to the bind port instead of the Data port. After that, whenever I'd turn either the RX or TX off, 3 of the 4 satellites would start flashing after power up, and although the 4th had a solid LED (it was on the (A) channel for the satellites), the controls remained locked. Either the RX or TX losing power would cause this .. BUT. . if I turned both of them off, and then turned the TX on, followed by the RX, all 4 would re-link properly and I'd have control again.

I solved it by first kicking myself in the butt for being stupid, then going through the bind procedure (PROPERLY) again. After that everything was fine. I intentionally repeated the goof move of plugging the Flight Log into the bind port, and the receiver again had the same responses while doing power off-on of either the TX or RX. Now, why the (A) satellite LED remained solidly lit is a mystery, especially since the receiver went into lockout and the other 3 satellites were flashing. Perhaps the AR9100 regards it as an afterthought compared to the 3 primary satellites?

Isn't technology wonderful???

[KrisW]

	Quote: Originally Posted by erichevy
	I did the radio off/on test again.. Hmmm. now it "only takes 5 to 10 seconds everytime again. Eric.

Hey Eric, beign that you are from the Netherlands. . . are the girls in your Avatar dressed like that to help model RC products. . . or something else??

[dick hanson]

	Quote: Originally Posted by erichevy
	No, I really meant 10 to 15 minutes. I did this test when I bought my spektrum equipment new, a tm8 module for my 9c radio and 5 AR9000 recievers. You realy can't tell how long every time it's going to be when switched off/on quick because it differs, between a minute and sometimes as long as 15 minutes. Meanwhile the led in the module is blinking. Btw, this has nothing to do with quick connect, which is tested by switching the reciever power off/on and not the radio. It is no problem to me anymore, because I know now this "side" effect will happen, and will avoid a quick off/on switching because of that. The quickly swichting off/on is never needed, and must be avoided (NEVER DO THIS WITH FUTABA fasst) but I know now what it will do with my equipment, and because of this, I thought I mention/warn you not to do this while flying, hoping to find a new channel in flight! But now I am curious what you're Spektrum equipment will do when you switch you're radio off/on quick?? (with reciever turned on ) I do not think this is only happening to me! Eric.

A little side note here --on technology--
I have the DX6i--as well as the 9303 -.
In puttering with the tx, you will note that when switched on -then off-- the DX6i, displays the comment " saving data"--THEN shuts it'sself off.
The 9303 when switched off - shows a horizontal line on the screen for a few moments - then the line fades out
this is the same thing --that is -the tx is saving data -then turning off.
Exactly the same thing happens on a computer - --You select "turn off or restart" then the computer saves all your naughty pictures and THEN turns off.
This step in computer technology is neither new or expensive ( note ,the DX61 has it)
Why Futaba has a "be careful on turn off" approach - is a real mystery to me - But in that I don't fly Futaba anymore -it is not a concern. Maybe it is no issue with Futaba guys - OK also.
Now back to the switching quickly OFF n ON with the DSM2 system.
One: Don't do it whilst flying
Twoon't do it whilst flying
Three: Don't do it whilst flying.
But if you do do it -please let me know how it works out -- My own fiddling on the bench shows a quick reconnect - -but not good enough for me.
Irrespective of the system used (2.4)- The time lapse may be enough to confuse the RX and cause things to "start UP" not simply reconnect.
So far I will await the results of others on this.

[Kiwi]

****You select "turn off or restart" then the computer saves all your naughty pictures and THEN turns off.****

And just how would you know that Dick????

[KrisW]

	Quote: Originally Posted by Kiwi
	****You select "turn off or restart" then the computer saves all your naughty pictures and THEN turns off.**** And just how would you know that Dick????

Dick's an OLDE guy, Kiwi. . he NEEDS the dirty pictures. . .Personally, I just rely on my pornographic memory. . . . . . . .

[dick hanson]

	Quote: Originally Posted by Kiwi
	****You select "turn off or restart" then the computer saves all your naughty pictures and THEN turns off.**** And just how would you know that Dick????

Just using an example even the kiddies could understand .
seriously - I was surprised that this feature was not built into other manufacturers' computer type radios.

[buttface]

My XPS hops and I love it!

[KrisW]

	Quote: Originally Posted by buttface
	My XPS hops and I love it!

(sigh)

[erichevy]

	Quote: Originally Posted by KrisW
	Hey Eric, beign that you are from the Netherlands. . . are the girls in your Avatar dressed like that to help model RC products. . . or something else??

Hi Kris,
Dressed to promote the hobby: (sorry:0)

[BaldEagel]

	Quote: Originally Posted by buttface
	My XPS hops and I love it!

Mike

[BZFrank]

At least - just brushed under the carpet. Looks like JD erased all threads connected to the hopping issue on RCGroups XPS forum.

Frank

[Kiwi]

Well they dont and wont get brushed under the carpet here.

Of course if JD would be so kind as to deliver a video to us showing the hopping and what very special conditions it takes for that to happen we would welcome him and I would gladly admit to being wrong.

Maybe I need to get onto Graupner and have them supply us with some cast in stone evidence of how their system is going to frequency hop if the going gets tough. I'm sure a huge player in the industry like them would be only too willing to display the strengths of the systems they will be selling.

[wrightme]

	Quote: Originally Posted by BZFrank
	At least - just brushed under the carpet. Looks like JD erased all threads connected to the hopping issue on RCGroups XPS forum. Frank

Yes, he did, and about darn time! There are plenty of venues for that discussion. The rampant attacks from both sides of the fence in the XPS Vendor area made it impossible to have any real meaningful dialog about real-world Q&A about the XPS systems. The "hop/doesn't-hop discussions can be had in the appropriate RCG forums. Hitec exercises much more stringent control over its Vendor area, why should JD be any different? The issue of hop/doesn't is not swept under the rug everywhere on RCG. In fact, if those with difficulties on this issue would use some common sense and decorum instead of bashing each person who has a positive experience with XPS, the exchange of information COULD have continued. Each of you who posted over and over and over how bad you thought XPS is are responsible for those threads disappearing. You all could have kept it as a free exchange of information, but it always had to go to bashing.

If it doesn't work for you, go get something that does.

[XJet]

I suspect that JD will be waiting for the launch of this 900MHz version (which is FHSS).

At that stage he'll simply say "if you must have robust agility then our 900MHz system is probably best for you".

That will become a stock-reply to anyone questioning the frequency agility of the 2.4GHz systems.

That's fine for new-customers but what about those who have already bought on the promise of frequency agility?

Ah, as so many in the XPS support forum say "that's Marketing".

[BaldEagel]

	Quote: Originally Posted by wrightme
	If it doesn't work for you, go get something that does.

Did exactly that, I fly on an interferance prone site, constant glitching on PPM, this is why I went with the Graupner IFS system, I sent the Graupner IFS straight back to them when I got four incidents of lock out during flight, Graupner took back the unused Rx's in their boxes but have refused to issue a credit note for the module and one Rx, they have suggested the return of the units for testing, they already had these units in their hands once, we are about to send them back again with a request that they prove beyond doubt that the units operate in accordance with their advertising, not just that they operate i.e. hop frequencies.

Will keep everyone informed of our progress.

Mike