RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec radios  
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RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec... - 9/11/2006 8:32:22 PM   
Skaluf



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Joined: 4/13/2004
From: Champaign, IL, USA
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quote:

ORIGINAL: hilgert

Agreed on the need for REAL WORLD TESTING of all systems, especially by the AMA.

And, let's not forget about the Nomadio efforts as well. They apparently have a system they have licensed (according to them) to at least one major manufacturer. They are bit into the military stuff as well, so I'd bet their system has been very thoroughly tested (if it will ever exist in consumer form for RC aircraft). The Nomadio folks are keeping the specifics to themselves at this time.




Okay, last one [post] for me on the forum, at least for now. As I think Larry knows AMA has tested every spread spectrum system that is currently available. This includes the DX6, the Spektrum surface module/receiver and the Nomadio system. Each of these manufactuers has been good enough to provide the eqiupment to us for these purposes. It is our intention, with manufacturer cooporation to cotinue in this manner.

I personally fly a spread spectrum system almost every day in my mini helicopter, but for now only my 72 MHz stuff controls my larger aircraft.

As I said last year about this time, this is a very exciting time for radio control. So lets just be patient and wait for the manufacturers to show us the latest/greatest stuff.

Regards,

Steve Kaluf
Technical Director


_____________________________

Steve Kaluf
Hobbico

(in reply to hilgert)
       Post #: 76

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec... - 9/11/2006 8:46:49 PM   
hilgert



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quote:

ORIGINAL: Skaluf
As I think Larry knows AMA has tested every spread spectrum system that is currently available. This includes the DX6, the Spektrum surface module/receiver and the Nomadio system. Each of these manufactuers has been good enough to provide the eqiupment to us for these purposes. It is our intention, with manufacturer cooporation to cotinue in this manner.

Yup, just stating that it (AMA testing) is a good thing, and should be done extensively. Of course, the AMA Technical Director would have to KNOW about the system in order to test it, but he just found out about the Xtreme system a week or so ago (surprise, Steve... ).

Also, to Jim Drew and Xtreme, I would highly suggest producing a few dozen production-grade units and tossing them around the country to a few fliers and testers to test and review. What better way to get buy-in and endorsement.

-Hilgert

< Message edited by hilgert -- 9/11/2006 8:49:24 PM >

(in reply to Skaluf)
       Post #: 77

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hitec ra... - 9/11/2006 8:50:51 PM   
jlkonn



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From: Planet Earth, IA, USA
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Hey Jim,
If you are looking for someone to fly a system for the next several months here in Iowa...including the cold winter I would like to volunteer. I have a 9CAP and a well worn UCD that would be a good testbed.

PM me if interested.
JLK


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A goal without a plan is just a dream.
AMA 97605

(in reply to JimDrew)
       Post #: 78

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 2:54:20 AM   
JimDrew


 

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Joined: 10/19/2005
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Ugh... our product database is corrupted. We have never seen this problem until now, and our site has been online since JANUARY (and nobody reported this problem). We don't ever click on the links to follow things, we use the pull down menus. Apparently the database works with the pull downs, but references some other database stuff that was suppose to have been deleted from the template when the web hosting company created our site. It looks like we are going to have to rebuild everything from scratch at this point to fix it. Thanks for pointing this out.

_____________________________

Jim Drew, CEO/President - Xtreme Power Systems

(in reply to jlkonn)
       Post #: 79

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 3:01:06 AM   
flyinrazrback



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Finally got an email, here is the important stuff from the email "There are no firm release dates at this point"

_____________________________

"You'll get your chance smart guy!"

(in reply to JimDrew)
       Post #: 80

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 3:55:50 AM   
hilgert



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quote:

ORIGINAL: JimDrew

Ugh... our product database is corrupted. We have never seen this problem until now, and our site has been online since JANUARY (and nobody reported this problem). We don't ever click on the links to follow things, we use the pull down menus. Apparently the database works with the pull downs, but references some other database stuff that was suppose to have been deleted from the template when the web hosting company created our site. It looks like we are going to have to rebuild everything from scratch at this point to fix it. Thanks for pointing this out.

Jim, that's interesting. Over on RCGroups.com I PM'd you in mid-August with this very information. I have the PMs between us if you would like to see it.

As a suggestion going forward, I would have your web developer test all links before publishing to the live site. It just looks more professional, and given the products your are hopefully about to start selling I think it would be important.

Anyway, it now looks like you have addressed it. Not sure how "Xtreme" Blenderm hinge tape is, but at least it's an RC-related product. And it's only $3.95 .

-Hilgert

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< Message edited by hilgert -- 9/12/2006 3:58:37 AM >

(in reply to JimDrew)
       Post #: 81

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 4:02:16 AM   
hilgert



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quote:

ORIGINAL: flyinrazrback

Finally got an email, here is the important stuff from the email "There are no firm release dates at this point"

Jim posted somewhere that mid-October is the release date. It's also on their website as well.

(in reply to flyinrazrback)
       Post #: 82

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 3:17:12 PM   
ycchu


 

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Quote Hilgert:

[Anyway, it now looks like you have addressed it. Not sure how "Xtreme" Blenderm hinge tape is, but at least it's an RC-related product. And it's only $3.95]

(1) Blenderm Tape is a medical product sold by 3M for wound dressing or similar application (the "derm" obviously refers to dermis or skin). Rightly so it can be used as hinge material for foamies.
(2) Blenderm Tape was discontinued by 3M in early 2005.
(3) "Xtreme" wants to sell us obsolete (my apology for those who is nostalgically attached) products whilst promising a rosy future.
(4) I have no intention of picking on them ("Xtreme" but beware if they start taking pre-order for "XtremeLink" products. There is intense interest and modelers (as we all know better) are compulsive shoppers especially when it is presented with such irresistible temptations. It could generate considerable amount of cash in a short time (you know the rest).

(in reply to hilgert)
       Post #: 83

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 3:26:56 PM   
EASYTIGER


 

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Cut the guy a little slack. Looks like those items are just part of templates provided to set up the website. Is it THAT big a deal.
Let's stick to the subject, hey? There is PLENTY to talk about, good or bad, without getting into some petty thing about the website. We won't be installing the website in our planes.

(in reply to ycchu)
       Post #: 84

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/12/2006 5:16:23 PM   
hilgert



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quote:

ORIGINAL: EASYTIGER

Cut the guy a little slack. Looks like those items are just part of templates provided to set up the website. Is it THAT big a deal.
Let's stick to the subject, hey? There is PLENTY to talk about, good or bad, without getting into some petty thing about the website. We won't be installing the website in our planes.

Agreed - back to the subject at hand.

Jim, are your antenna radiation patterns cardioids? If so, they are not truely "spherical" in the sense that the antenna is the *center* of the sphere (eg - an isotropic radiator). Rather, it would mean that the antenna is really on one *side* of an otherwise spherical-like pattern, so that one side of the antenna would have excellent coverage while the other would not. My concern is that if this is true, you would get excellent link coverage when the antennas have their patterns pointed at each other, and not-so-good coverage when one (or even worse both) of them is pointed in the opposite direction. I have attached an image of what I *think* your radiation pattern is like from talking to a few people who have looked at your antenna. Can you confirm? I am not interested in the exact numbers at this point, just in confirming that this is the radiation pattern, or close to it.

If this is so, then I would think a more ideal orientation for the TX antenna would be vertical out the top of the TX. I know the Maxstream module does not permit this with the built-in antenna, so it's just an observation. Also, if true, it would mean in certain orientations during flight the RX antenna would be in very sub-optimal conditions.

Please note that I am not, nor do I claim to be, an RF expert. I have just spent some time researching this to understand it a bit more.

-Hilgert


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< Message edited by hilgert -- 9/12/2006 5:21:53 PM >

(in reply to EASYTIGER)
       Post #: 85

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/18/2006 6:41:20 PM   
DeeEight


 

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Sigh... can't resist. Some facts on Jim that most of you (other than the ones who also paintball) probably aren't yet aware of, but should be made aware of.

#1 Jim Drew IS a competent enough electronics guy to make relatively simple aftermarket circuit boards for hobby groups who have members with lots of money, and not enough time/skill to make the things themselves. He's done this with both Amiga computers and the Paintball industry.

#2 Jim Drew IS also prone to overhyping his own products, making claims of trademarks and patents which do not exist (according to the actual US Patent and Trademark office anyways), and throwing around nonsensical scientific terms that'll dazzle and confuse people who know nothing about the subject, and bring dazzling fits of laughter to those who actually do know about the subject.

Google his name and Amiga and Paintball and you'll all learn the history behind these two facts.

#3 When real experts call him out on his claims on a discussion forum (such as happened on paintball nation a couple years ago), he'll resort to begging/threatening the board admins to have every post he's made deleted, then respond to new posts saying he never claimed that and that there's no proof of it.

That too can likely be found in a google search, simply because of how many debated the ethics/morality of discussion boards doing that to posts (since otherwise new users to the forums/sport might find the threads, and be educated as to who's real, and who's fake).

Examples would be his previous claims to having a trademark on the term "debounce", even though its an electronics industry wide term common to anyone who has to work with/designing things like joysticks, mice, mouse pads, etc. In this discussion here about these new rc chips, he's already claimed to have invented things ten years ago.

Now as to the claims about 2.4Ghz transmitters... why anyone would wanna go to a wavelength that by its very nature is designed for reduced range in a sport where better range is the usual goal is beyond me. The only advantages to it really is that its a worldwide unlicensed frequency and its capable of high speed and bandwidth. Good if you want to market your cordless phone in ONE version worldwide, or make wireless ethernet adapters, or baby monitors... that's about it. The signal strength rapidly degrades though, which also makes it so that you don't really have to worry about people three blocks over stealing your internet connection bandwidth, or overhearing your cordless phone convo on a scanner. Also Microwave ovens usually operate in the 2.4ghz band, so I wouldn't wanna use an RC plane with such a controller anywhere near a microwave over (don't fly it your helicopter over the house while the wife is cooking).

(in reply to hilgert)
       Post #: 86

RE: XtremeLink™ - 2.4GHz for Futaba, JR, and Hite... - 9/18/2006 10:24:07 PM   
EASYTIGER


 

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The claim of him having invented zapped cells ten years ago, it was just outrageously false.

There is an awful lot about Jim Drew and this product and the way it is presented that is awfully, awfully shady.
But I guess we shall see.

(in reply to DeeEight)
       Post #: 87