Independent tests prove lack of frequency hopping with XPS

[dirtybird]

OK one of xjets flames was that leaky microwaves in the neighborhood would shoot you down. Hence the reason for my test.
Here in another test you can do:
Sit your system next to a WIFI router, get it working and turn on your router. Again my system ignors the WIFI.
I don't know if XPS hops or not but it deals with all of the tests I can devise with what I have. I would like to get ahold of one of those in flight cameras, but I am not going to go out and buy one. Has anyone tried a test with a camera? Be sure you are not swamping the front end of the receiver. Keep the receiver at least 10 feet from the camera.

BTW Sweetpea were you at the Big Bird meet at Concrete last weekend? I flew my XPS stuff several times there.

[XJet]

	Quote: Originally Posted by dirtybird
	That is if Xjet ever gets around to putting tests where his mouth is.

Ignored

	Quote:
	Here is a test that most of you can perform if you have XPS. Sit the receiver on the top of your microwave and get the system operating. Then trun on the microwave and see if it stops working. I have done this test with two microwaves and can not find a time that the system stops working. Since both are on 2.4 ghz XPS must do something to keep working. I have even tried it with the MW door open and the cut off switch bypassed. The output of my microwave is 150W

That's a *very* low power microwave oven. Most are at least 650W.

And I have to say that *anyone* who operates a microwave oven with the door-safety disabled is an idiot.

[XJet]

	Quote: Originally Posted by dirtybird
	OK one of xjets flames was that leaky microwaves in the neighborhood would shoot you down. Hence the reason for my test.

I think the word you meant to use in that sentence was "could" not "would".

	Quote:
	Here in another test you can do: Sit your system next to a WIFI router, get it working and turn on your router. Again my system ignors the WIFI. I don't know if XPS hops or not but it deals with all of the tests I can devise with what I have.

Yet Kiwi was able to demonstrate the problem very simply.

Clearly this proves not that XPS is in some way suitable for large models but simply that your testing is deficient.

[capgains]

	Quote: Originally Posted by dirtybird
	I have even tried it with the MW door open and the cut off switch bypassed. The output of my microwave is 150W

Holy Cow!!!! I was always told if you did that, matter would become anti-matter and the world would explode. Guess I can cross that one off my list.

[Mike Busutil]

	Quote: Originally Posted by JEFFRO503
	I'm not going to call the XPS user's fanboys...... But the guys who "do" defend it on here are the few who hasn't had any problems yet ( i said yet ) You guys that still use it and it works for you, that's great. But again , like i stated in the past , i took like 3-4 nights and read through this entire thread. And what i found we're guys in the Start of all this that we're defending XPS , sooner or later , they got bit.....and bit extremely hard! One question : You guys that still fly XPS , do you do any competing or go to big fun fly events? I have been to quite a few , and have not found ONE PERSON who flies with XPS. Mike...you have a 50% edge.....that's a huge friggin' airplane! BTW...i commend you for being that serious into the hobby. Do you compete with this aircraft? usually when someone puts that chunk of change down on an aircraft , they have to be pretty serious into it. I'm just wondering , because around here in the NW , and all the fields i fly at , not ONE person that i know of , or have spoke to , uses XPS. God forbid , you don't find out the hard way , just to prove a point that XPS works. if you do fly XPS at any events......and i'm there , i'll make sure i stand on the other side of the protection barrier.

Yes Jeff, I have had my Edge at a few different fields for funflys and contest, I have also flown my Edge with other XPS users for a few months now and still no problems.

I dont think any system out there can say they are 100% safe, everyone will have a problem one day with any system they fly. I look at it like this, if im always worried about

whats going to happen today or can I really trust this system and just sit around and not fly then Im just like the old guys who sit at the field and never fly but complain about everybody else.......

Just fly, everything will be fine

[BaldEagel]

	Quote: Originally Posted by Mike Busutil
	I dont think any system out there can say they are 100% safe, everyone will have a problem one day with any system they fly. I look at it like this, if im always worried about whats going to happen today or can I really trust this system and just sit around and not fly then Im just like the old guys who sit at the field and never fly but complain about everybody else....... Just fly, everything will be fine

Not stricly true, I had problems with the XPS/IFS system from day one first flight, in the work room no desernable problems and no problems when completing the manufacturers recommended range check on site, but in the air, four lock outs in one flight in areas that are known to have high level communication radio waves ? crossing an estuary, when tested on the ground in these areas the lock out could be repeated at an estimated ground level flying range.

Spektrum and FASST work on this site without problem, the aforgoing was enough proof to me that the system has a fundimental problem, whether it hops or not it is not reliable enough in the area that I fly in, even for a foamie.

Mike

[dirtybird]

	Quote: Originally Posted by BaldEagel
	Not stricly true, I had problems with the XPS/IFS system from day one first flight, in the work room no desernable problems and no problems when completing the manufacturers recommended range check on site, but in the air, four lock outs in one flight in areas that are known to have high level communication radio waves ? crossing an estuary, when tested on the ground in these areas the lock out could be repeated at an estimated ground level flying range. Spektrum and FASST work on this site without problem, the aforgoing was enough proof to me that the system has a fundimental problem, whether it hops or not it is not reliable enough in the area that I fly in, even for a foamie. Mike

Yet on the other hand I have two systems that have repeatably worked reliably in an area that has been shown to be high in RF activity in the 2.4 ghz range.
Have you considered that there might be something wrong with your particular unit?

[JEFFRO503]

	Quote: Originally Posted by Mike Busutil
	Yes Jeff, I have had my Edge at a few different fields for funflys and contest, I have also flown my Edge with other XPS users for a few months now and still no problems. I dont think any system out there can say they are 100% safe, everyone will have a problem one day with any system they fly. I look at it like this, if im always worried about whats going to happen today or can I really trust this system and just sit around and not fly then Im just like the old guys who sit at the field and never fly but complain about everybody else....... Just fly, everything will be fine

Well , no matter what system you fly with , that 50% Edge is friggin' amazing! I have yet to see one of these birds fly , but sure would love to. I myself am just now getting into the 100cc size ( 35% WH Sukhoi ) , but as a late winter project / early spring , i'm wanting to finally build myself a 40% extra 260 or 300. I'm wanting to slap a DA-170 on it for power. Hopefully , if everything goes ok with work this winter , i can have a big bird in the air.

Mike , can you post a pic of tha 50% EDGE? Or point me to a build thread you might have been in. I have checked out Snap a sauras (Ellie)<<< i think that's spelled correctly? And the size of that thing is scary!

[Mike Busutil]

	Quote: Originally Posted by JEFFRO503
	Well , no matter what system you fly with , that 50% Edge is friggin' amazing! I have yet to see one of these birds fly , but sure would love to. I myself am just now getting into the 100cc size ( 35% WH Sukhoi ) , but as a late winter project / early spring , i'm wanting to finally build myself a 40% extra 260 or 300. I'm wanting to slap a DA-170 on it for power. Hopefully , if everything goes ok with work this winter , i can have a big bird in the air. Mike , can you post a pic of tha 50% EDGE? Or point me to a build thread you might have been in. I have checked out Snap a sauras (Ellie)<<< i think that's spelled correctly? And the size of that thing is scary!

Sure thing Jeffro!

Just for you

[sweetpea]

	Quote: Originally Posted by dirtybird
	BTW Sweetpea were you at the Big Bird meet at Concrete last weekend? I flew my XPS stuff several times there.

Yep I was there on Saturday. I was with John and Ryan. What were you flying?



As for Mike.........when is the Sukhoi going to be ready? That thing is huge!

[JEFFRO503]

Mike , we'll never agree about the XPS thing , but i think we can both agree that your airplane completely kicks ASS! That is one awesome setup. Is the blue head 3W a 170? and maybe the four banger a 212cc ?? Haven't kept up on any of the sizes above a 150cc - 170cc. Great lookin' bird Mike!! thanks for the pics!

[Mike Busutil]

	Quote: Originally Posted by JEFFRO503
	Mike , we'll never agree about the XPS thing , but i think we can both agree that your airplane completely kicks ASS! That is one awesome setup. Is the blue head 3W a 170? and maybe the four banger a 212cc ?? Haven't kept up on any of the sizes above a 150cc - 170cc. Great lookin' bird Mike!! thanks for the pics!

Thanks Jeffro!

You are right about the 212..............But the Blue head is a 3W 275 26 HP!

Notice the size differents in the heads.

Im running a 37 x 13 Prop.

[Mike Busutil]

	Quote: Originally Posted by sweetpea
	As for Mike.........when is the Sukhoi going to be ready? That thing is huge!

The Sukhoi!!!! Man I have been trying to get my dad to finish that but he is doing a 50% Christain Eagle right now and has put it to the back burner

I'll keep on him about it though.

He did get a 47" prop for it a few weeks ago...........

[sweetpea]

keep on it........that will be a killer plane

[BaldEagel]

	Quote: Originally Posted by dirtybird
	Yet on the other hand I have two systems that have repeatably worked reliably in an area that has been shown to be high in RF activity in the 2.4 ghz range. Have you considered that there might be something wrong with your particular unit?

Two modules in different Tx's and five different Rx's all tested out the same, just not reliable enough in my opinion where high levels of interferance are to be expected, or the plane is not expendable. (I did put in another comment about safety here, but took it out in the interest's of not being inflamatory.)

Mike