RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec radios  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec radios
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RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 3:57:14 AM   
tomswrld


 

Posts: 51
Joined: 11/20/2005
From: , CO, USA
Status: online 		Thanks. If this proves out , every gas burner who ever had to chase down the cause of the jitters will HAVE to have one. I assume that metal to metal contact caused RFI will also be history?! Tom

(in reply to causeitflies)
       Post #: 26

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/8/2006 2:08:19 PM   
Cobra1



Posts: 427
Joined: 2/15/2002
From: Monrovia, MD, USA
Status: offline 		I hate to spend $ to replace stuff that works but in this case it seems the way to go. I can't wait for a review of the product in a gasser!!

(in reply to tomswrld)
       Post #: 27

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 2:12:39 PM   
RVM


 

Posts: 1975
Joined: 3/12/2006
From: Sacramento, CA, USA
Status: offline 		Will metal and carbon tubing running throughout the fuse interfere with this like it can with our "normal" rx?

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(in reply to causeitflies)
       Post #: 28

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 3:03:33 PM   
backroadrider69


 

Posts: 52
Joined: 5/18/2004
From: Odessa, FL, USA
Status: offline 		Jim,

This is the best news for RC since the old proportional systems came out in the 60's!

If it eliminates all of the RF interference from ign and metal to metal & metal to carbon that will be a big plus.

Will we still be able to run 2 receivers in GS planes?

Thanks,
Butch

(in reply to RVM)
       Post #: 29

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/8/2006 3:54:07 PM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		I would recommend that we formulate all of our concerns into questions that can be addressed when the product is released.
Those things that Xtremelink has addressed can be answered. Those things that haven't been addressed may be investigated by members and reported back to Xtreme power systems. I think is is very constructive from an input perspective. We need to be make sure that we don't expect all aspect to be covered or even known during the first release. This is new for our industry and hobby. We need to make sure that we allow them to do post release evaluation and not to jump on any one issue that develops.

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(in reply to backroadrider69)
       Post #: 30

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 4:31:48 PM   
dick Hanson



Posts: 10035
Joined: 12/12/2001
From: slc, UT, USA
Status: online 		read the existing publications -
as for spark interference -
some is strong enough to cross all the frequencies /bands etc..
look at a scope of strong spark plug hash

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(in reply to causeitflies)
       Post #: 31

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 5:01:15 PM   
Skaluf



Posts: 41
Joined: 4/13/2004
From: Champaign, IL, USA
Status: offline
quote:

ORIGINAL: JimDrew

The AMA was made aware of the system many months ago. I think the Spektrum radio system has shown that 2.4GHz itself has no real problems. We have just taken it to the next level, and supported your existing equipment.



Hi Jim, As the AMA Technical Director I'm surprised at this particular statement. I was not aware of this particular system until three days ago. I'm very interested in talking to you, please give me a call.

Steve Kaluf
AMA Technical Director
765-287-1256 ext 230
E-Mail: skaluf@modelaircraft.org


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Hobbico

(in reply to JimDrew)
       Post #: 32

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/8/2006 5:29:53 PM   
Panzlflyer



Posts: 1940
Joined: 2/28/2002
From: Goldsboro, NC, USA
Status: offline 		deleted due to lack of patience

< Message edited by andyt -- 9/8/2006 5:34:10 PM >

(in reply to Skaluf)
       Post #: 33

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/8/2006 7:17:38 PM   
mr_matt



Posts: 6627
Joined: 12/7/2001
From: Oak Park, CA,
Status: online
quote:

ORIGINAL: Geistware

I would recommend that we formulate all of our concerns into questions that can be addressed when the product is released.
Those things that Xtremelink has addressed can be answered. Those things that haven't been addressed may be investigated by members and reported back to Xtreme power systems. I think is is very constructive from an input perspective. We need to be make sure that we don't expect all aspect to be covered or even known during the first release. This is new for our industry and hobby. We need to make sure that we allow them to do post release evaluation and not to jump on any one issue that develops.


Is this OK to ask?

"Can I watch this system being used to fly a plane anywhere on the West Coast soon?"

I would think that most people would want to see this system work before they tried it in their plane?


If that is OK, I will ask the question:


xtremepowersystems,

Can I watch this system being used to fly a plane anywhere on the West Coast soon?

Thanks,


OH PS how much latency is introduced by this module?




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JetCat rep

(in reply to Geistware)
       Post #: 34

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec r... - 9/8/2006 7:50:09 PM   
exeter_acres



Posts: 6070
Joined: 9/22/2004
From: Johns Creek, GA, USA
Status: offline
quote:

ORIGINAL: Skaluf


quote:

ORIGINAL: JimDrew

The AMA was made aware of the system many months ago. I think the Spektrum radio system has shown that 2.4GHz itself has no real problems. We have just taken it to the next level, and supported your existing equipment.



Hi Jim, As the AMA Technical Director I'm surprised at this particular statement. I was not aware of this particular system until three days ago. I'm very interested in talking to you, please give me a call.

Steve Kaluf
AMA Technical Director
765-287-1256 ext 230
E-Mail: skaluf@modelaircraft.org





Jim, have you followed up on this?
Have you contacted the technical director?

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(in reply to Skaluf)
       Post #: 35

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/8/2006 11:00:16 PM   
DadsToysBG



Posts: 1570
Joined: 7/31/2003
From: Bowling Green, KY, USA
Status: offline 		Where will the AMA stand on this new system? Dennis

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(in reply to exeter_acres)
       Post #: 36

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/9/2006 12:13:50 AM   
A10FLYR



Posts: 1282
Joined: 12/6/2001
From: Littleton, CO,
Status: offline
quote:

ORIGINAL: mr_matt

quote:

ORIGINAL: Geistware

I would recommend that we formulate all of our concerns into questions that can be addressed when the product is released.
Those things that Xtremelink has addressed can be answered. Those things that haven't been addressed may be investigated by members and reported back to Xtreme power systems. I think is is very constructive from an input perspective. We need to be make sure that we don't expect all aspect to be covered or even known during the first release. This is new for our industry and hobby. We need to make sure that we allow them to do post release evaluation and not to jump on any one issue that develops.


Is this OK to ask?

"Can I watch this system being used to fly a plane anywhere on the West Coast soon?"

I would think that most people would want to see this system work before they tried it in their plane?


If that is OK, I will ask the question:


xtremepowersystems,

Can I watch this system being used to fly a plane anywhere on the West Coast soon?

Thanks,


OH PS how much latency is introduced by this module?






Matt, Matt....


_____________________________

Dean,
A10FLYR

(in reply to mr_matt)
       Post #: 37

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/9/2006 1:13:25 AM   
EASYTIGER


 

Posts: 7676
Joined: 12/7/2001
From: nyc, NY, USA
Status: offline
quote:

ORIGINAL: Geistware

I would recommend that we formulate all of our concerns into questions that can be addressed when the product is released.
Those things that Xtremelink has addressed can be answered. Those things that haven't been addressed may be investigated by members and reported back to Xtreme power systems. I think is is very constructive from an input perspective. We need to be make sure that we don't expect all aspect to be covered or even known during the first release. This is new for our industry and hobby. We need to make sure that we allow them to do post release evaluation and not to jump on any one issue that develops.


What on earth are you TALKING about? Your post makes no sense to me.

Whatever.

This sounds good to me. The JR Spektrum system works perfectly. This is just the same idea with longer range and telemetry added. Extreme is not the only one with one of these in the works.
As a matter of fact, sure looks like the Extreme stuff is not even in production yet, and don't be surprised if some other radio manufacturer actually hits the streets with a production system before Extreme does.

Looks great, the telemetry part sounds great, the fact that you can use it in your existing radio sounds great.

My concerns are really with build quality and such, I hope they are well made...you see some really shabbily-built electronics out there nowadays, and you often see nice prototypes like the ones they are flying right now shabbily duplicated by factories overseas, and the seller does not even know how bad they are until the shipment arrives. Not saying this is the case with this product, but it's a concern of mine.

For the life of me, I cannot understand how people could assume such a system would be totally immune to RF interference, or carbon fiber or metal blocking your signal...wow.

So....anyway...this all sounds great. To me, it's not a revolution, I think it's been a long time coming, and I KNOW others are working on it, one major radio manufacturer has one scheduled for later this year already, I hope the extreme equipment is good, no reason to beleive that it is not everything they say it is.

(in reply to Geistware)
       Post #: 38

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ... - 9/9/2006 4:26:17 AM   
hilgert



Posts: 47
Joined: 1/1/2005
From: Flower Mound, TX, USA
Status: offline 		For what it's worth, below are some "reality check" items and concerns I would have at this point (there are several others, but this is the top of my list):

  • 12-bit resolution. You can't make 4096 steps out of a 1024 step PPM signal. If a TX is 10-bit (1024), and puts out a 10-bit PPM signal, and the TX transmits it at 12-bits (4096), it is still does not have *ANY* more resolution that the original PPM signal. You can't turn lead into gold.

  • Multipathing problems with one RX antenna. Spektrum worked for years on this and could not find a solution that would allow one antenna for reliable reception. This article by Cisco (who have a bit of experience in this area) would be useful to review: [URL=http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008019f646.shtml]http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008019f646.shtml[/URL]. Also, while I am not an expert in RF propogation characteristics, I find it hard to believe the copper-plated pc board, along with all of the other metal gizmos in the TX (like the battery), would not have *some* effect on the radiation pattern when the plane is directly overhead (think soar planes) and the TX is level to the groun