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Model Forum / Radio Controlled / Air Models / February 2007



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Spektrum Modules Available

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Ed Forsythe - 25 Feb 2007 13:58 GMT
Hi Troops, JR/Spektrum is about to release (early April) 2.4GHz module for
JR radios *and* Futaba, Hitec.  IMHO, that's a class move. I can *feel* the
difference ;-)) Go here for the complete poop.
http://www.flyinggiants.com/default.php
Abel Pranger - 26 Feb 2007 00:10 GMT
>Hi Troops, JR/Spektrum is about to release (early April) 2.4GHz module for
>JR radios *and* Futaba, Hitec.  IMHO, that's a class move. I can *feel* the
>difference ;-)) Go here for the complete poop.
>http://www.flyinggiants.com/default.php

Looks good Ed, except for the cost.  I can convert my trusty JR 8103
(best radio in my stable) to 2.4 GHz SS for $300, or buy a Spectrum 7
for about the same.  Not exactly a slam dunk for going with the
conversion.   Now if I had a 9103 or 10X the value tradeoff in
converting might make more sense.
Then again, we haven't seen the street prices yet.

Abel
Doug McLaren - 27 Feb 2007 02:51 GMT
| Then again, we haven't seen the street prices yet.

Are you sure we haven't?

The existing Spektrum stuff I've seen, it's almost never discounted,
unless you find a hobby shop guy who will sell it `under the table'.
This seems to apply to many (most? all?) of the brands sold by Horizon
Hobby.

Looking at this page --

  http://www.horizonhobby.com/Search/Default.aspx?SearchTerm=airmod&CatId=

it already gives the inflated `list' price and then the `actual'
price, and it's the actual price that I saw on the announcement.

Or, perhaps I should ask this differently ... where are you finding
Spektrum stuff with lower `street prices'?  For example, I know that
the AR6000's price is $49.99.  Is there a lower `street price' I
should be aware of?

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Doug McLaren, dougmc@frenzied.us
Great minds think alike.  Fools seldom differ.

Abel Pranger - 27 Feb 2007 16:20 GMT
>| Then again, we haven't seen the street prices yet.
<snip>

>......... it's the actual price that I saw on the announcement.

Oops, I presumed it was the inflated list price.  
That nails it, my 8103 will stay on 72 MHz.  And I had not yet
factored in the cost of replacing a  half-dozen receivers........

Abel
Ed Forsythe - 27 Feb 2007 16:13 GMT
Oh Guys - you want cheaper and perhaps better? :-)) Then go here
http://www.xtremepowersystems.net/  Should be ready at the Toledo show!

> Hi Troops, JR/Spektrum is about to release (early April) 2.4GHz module for
> JR radios *and* Futaba, Hitec.  IMHO, that's a class move. I can *feel*
> the difference ;-)) Go here for the complete poop.
> http://www.flyinggiants.com/default.php
Abel Pranger - 27 Feb 2007 18:02 GMT
>Oh Guys - you want cheaper and perhaps better? :-)) Then go here
>http://www.xtremepowersystems.net/  Should be ready at the Toledo show!
[quoted text clipped - 3 lines]
>> the difference ;-)) Go here for the complete poop.
>> http://www.flyinggiants.com/default.php

Tnx for the link, Ed.  Ain't free market competition sumthin'?

Abel
Ed Forsythe - 27 Feb 2007 19:20 GMT
No sweat AP. I understand that the troops at XPS have been working on the
2.4 setup for awhile.  If I can find someone to drive to Toledo with me
(9-10 hours) I'm planning on picking one up. The XPS specs better than the
JR but JR has been around for a long time and they will be around to support
anything they sell. I'm a JR fan (currently 9303) but I really hope the
troops at XPS make it.

>>Oh Guys - you want cheaper and perhaps better? :-)) Then go here
>>http://www.xtremepowersystems.net/  Should be ready at the Toledo show!
[quoted text clipped - 8 lines]
>
> Abel
Martin X. Moleski, SJ - 27 Feb 2007 23:22 GMT
subject was: Re: Want Cheaper? Spektrum Modules Available

>No sweat AP. I understand that the troops at XPS have been working on the
>2.4 setup for awhile.  If I can find someone to drive to Toledo with me
>(9-10 hours) I'm planning on picking one up. ...

I'm planning to be at Toledo Friday and Saturday.

I'll be with a couple of other guys, so I don't have
total control of my schedule.

Still, it would be fun to run into people from the
group, if possible.

Anyone going to have a booth there?  Some fixed check-in
point?

                Marty
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Red Scholefield - 28 Feb 2007 01:42 GMT
I'll be at the FMA Direct booth on Saturday and Sunday, would love to meet
some of the newsgroup guys.
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> subject was: Re: Want Cheaper? Spektrum Modules Available
>
[quoted text clipped - 14 lines]
>
> Marty
Martin X. Moleski, SJ - 28 Feb 2007 02:30 GMT
>I'll be at the FMA Direct booth on Saturday and Sunday, would love to meet
>some of the newsgroup guys.

Marvelous!

Everybody come on over and say hi to Red!

            Marty
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Ed Forsythe - 28 Feb 2007 02:47 GMT
If I get there I'll see ya Red :)

> I'll be at the FMA Direct booth on Saturday and Sunday, would love to meet
> some of the newsgroup guys.
[quoted text clipped - 16 lines]
>>
>> Marty
Ed Cregger - 27 Feb 2007 19:47 GMT
>>Oh Guys - you want cheaper and perhaps better? :-)) Then go here
>>http://www.xtremepowersystems.net/  Should be ready at the Toledo show!
[quoted text clipped - 8 lines]
>
> Abel

---------------

At least they answered the question concerning the DX6 system's range (1,000
ft.). I don't recall seeing that anywhere else.

I have a DX6 and a DX7. With the price of the modules being so high, I doubt
that I will be buying one for my 9303 or 8103. Then again, prices will
probably come down after a while.

Ed Cregger
Abel Pranger - 27 Feb 2007 20:02 GMT
>At least they answered the question concerning the DX6 system's range (1,000
>ft.). I don't recall seeing that anywhere else.

I don't think  Horizon/Spektrum would agree with that figure, Ed.  A
member of my club with a tendency to be conservative enlisted another
to take his DX6-equipped Easy Star to an identifiable point (on a topo
map) 1760 feet away on a hillside within LOS.  No sign of glitching.
Single data point of no statistical significance - but I doubt that
the figure cited by a competitor deserves any more credence.

Abel
Doug McLaren - 27 Feb 2007 22:12 GMT
| >At least they answered the question concerning the DX6 system's range (1,000
| >ft.). I don't recall seeing that anywhere else.
|
| I don't think  Horizon/Spektrum would agree with that figure, Ed.

I don't actually recall Spektrum giving an actual range, but tests
have shown it to be about 2000 feet.

| A member of my club with a tendency to be conservative enlisted
| another to take his DX6-equipped Easy Star to an identifiable point
| (on a topo map) 1760 feet away on a hillside within LOS.  No sign of
| glitching.

Glitching on PCM or the SS stuff is different than glitching on PPM
gear.  There will be no servos moving madly about -- they'll just stay
still, not do what your TX tells them to do.  So it's possible that at
1700 feet that only a small fraction of the frames were getting
through -- enough that you could still fly the plane, but it's so far
away that you didn't notice that it wasn't responding very quickly.
Just maybe.

Either way, this chart that XPS just put out at
http://www.xtremepowersystems.net/ is pretty biased.  `Radio speed'
doesn't matter.  `Frequency hopping' isn't nessesarily a good thing or
a bad thing.  For a resolution above 1024, nobody's gonna notice.  And
since they're not producing their own all-digital TX, you're limited
to the 10-12 bits of resolution you'll get out of your radio -- looks
like 12 is the absolute maximum, so that's only 4096 -- not the
claimed 65536, even if their system can handle it.

Operating voltage?  Some niche applications might care, but most
won't.  They didn't try very hard to figure out the DX7 warranty --
two minutes on google told me that it has a 3 year warranty.

Telemetry/bi-directional, that's a potential real feature.  But I
didn't think the initial XPS units would have that ...

But they forgot the most important bullet points ...

  Can buy now:          Yes    Yes    No      No
  Proven Track record:  Yes    Yes    Yes/No  No

(Yes/No = Futaba has a proven R/C track record, and even with spread
spectrum R/C gear, but this model is unproven.)

| Single data point of no statistical significance - but I doubt that
| the figure cited by a competitor deserves any more credence.

Yeah, I wouldn't trust it too much.

That said, if the XPS stuff comes out and lives up to the hype, I'll
probably plop down several hundred dollars and start migrating my more
commonly flown planes.  But I'm not holding my breath.

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Doug McLaren, dougmc@frenzied.us
The right to be heard does not automatically include the right to be
taken seriously. - Hubert H. Humphrey

Doug McLaren - 27 Feb 2007 20:00 GMT
| >Oh Guys - you want cheaper and perhaps better? :-)) Then go here
| >http://www.xtremepowersystems.net/  Should be ready at the Toledo show!
...

| Tnx for the link, Ed.  Ain't free market competition sumthin'?

Don't hold your breath on the XPS stuff.  It was originally supposed
to be out October 2006.

Looks like
http://www.rcgroups.com/forums/showthread.php?t=566018&page=126&pp=50
is up to 6256 posts, and presumably the entire thread is about XPS.

Granted, the stuff sounds really neat, but so far nobody has it.  At
least Spektrum has a track record ...

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Doug McLaren, dougmc@frenzied.us
I'd love to go to church, honey, but I've got a lot of work to do
around the bed. --Homer Simpson

 
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