New Forum! Spread Spectrum Technology and Products!

[madmax]

Hi Crew,

The advent and proliferation of Spread Spectrum technology is the biggest thing to hit the hobby in years, and we created this forum to discuss everything 2.4. Products, Spektrum, Futaba.. All of it. I've also moved most of the recent 2.4 topics into this forum aside from LeadingEdge Articles.

Post 'em here folks!

Best -- Max

[jetjockey69]

My favorite all time radio is the 12ch, Multiplex 4000. I'm hoping and waiting for someone to produce not just a 2.4 SS Tx module, but a 2.4 Rx with at least that many channels! Any news of any such on the horizon? I have been waiting for this technology to appear commercially and to mature enough so that it's useful for my turbine jet projects!

Keith

[USN_POPS]

	Quote: Originally Posted by jetjockey69
	My favorite all time radio is the 12ch, Multiplex 4000. I'm hoping and waiting for someone to produce not just a 2.4 SS Tx module, but a 2.4 Rx with at least that many channels! Any news of any such on the horizon? I have been waiting for this technology to appear commercially and to mature enough so that it's useful for my turbine jet projects! Keith

XPS has a modular system for the Multiplex 4000, and 12 channel receivers to match. One of the guys here in the area has one and loves it. They are hard to come by however as they sell out as fast as they come available.

http://www.xtremepowersystems.net/pr...hp?prod=XPS-P1

[rudderbash]

Has anyone used a spektrum AR6000 with a dx7 trans in a nitro 40 size plane?

[pilot232]

Jetjockey69.

You might be interested in this link:

http://www.rcgroups.com/forums/showthread.php?t=826539

I converted my mc4000 to 9 channel Spektrum operation. I love it.

Warm Regards,

Travis

[jetjockey69]

	Quote: Originally Posted by RichardCorby
	XPS has a modular system for the Multiplex 4000, and 12 channel receivers to match. One of the guys here in the area has one and loves it. They are hard to come by however as they sell out as fast as they come available. http://www.xtremepowersystems.net/pr...hp?prod=XPS-P1

I checked and they only have a 10ch Rx available. It sure would be nice if they did do a 12ch Rx!

[Zeeb]

	Quote: Originally Posted by rudderbash
	Has anyone used a spektrum AR6000 with a dx7 trans in a nitro 40 size plane?

JR/Spektrum does not recommend the AR6000 for anything but Park Flyers and they specifically exclude glow powered models as falling into the definition of Park Flyer.

Glow powered models, electrics larger than Park Flyer size, gas powered models, etc. should have a full range system. The DX7 is defined as a full range system (where the DX6 which was designed/released with the AR6000 rx is not) but for a six channel rx on your glow powered model, you should be using a full range rx with a satellite rx such as the AR6200.

[rudderbash]

	Quote: Originally Posted by Zeeb
	JR/Spektrum does not recommend the AR6000 for anything but Park Flyers and they specifically exclude glow powered models as falling into the definition of Park Flyer. Glow powered models, electrics larger than Park Flyer size, gas powered models, etc. should have a full range system. The DX7 is defined as a full range system (where the DX6 which was designed/released with the AR6000 rx is not) but for a six channel rx on your glow powered model, you should be using a full range rx with a satellite rx such as the AR6200.

I am flying a kadet lt 40 with an os 70 in a feild that is 500 by 1000feet and only 300 feet high and I cant afford to buy anymore.. I have a 6100 that was given to me..
Thanks for the reply

paul@fromeco.org

[USN_POPS]

	Quote: Originally Posted by rudderbash
	I am flying a kadet lt 40 with an os 70 in a feild that is 500 by 1000feet and only 300 feet high and I cant afford to buy anymore.. I have a 6100 that was given to me.. Thanks for the reply paul@fromeco.org

i flew the DX6 on quite a few planes a couple of years ago. My EP Superstar which flies all over the field at the RAMS in sumner. Never had a loss of range. I would guess that there are many times I fly the Superstar well over 1000 ft away, and hav tested it with the Eagletree altimiter to 760 ft.

[Zeeb]

	Quote: Originally Posted by rudderbash
	I am flying a kadet lt 40 with an os 70 in a feild that is 500 by 1000feet and only 300 feet high and I cant afford to buy anymore.. I have a 6100 that was given to me.. Thanks for the reply paul@fromeco.org

So is it a 6000 as stated in your original post, or a 6100 you mention here?

The 6100 is DSM2 technology which is better than the DSM1 used in the 6000, but it's still not recommended for your anticipated use...

I understand that funds can be tight, but this is a safety issue having to due with maintaining signal path diversity, not just an effort to extract more money from you.

Try soothing your conscience or paying for the damages when you lose control of your model and it hits something, or worse yet someone, with the fact that you ignored the manufacturer's recommendations for financial reasons.

[rudderbash]

Well now that I crashed my prfile I have a 7 channel I can use

[jetjockey69]

Anyone have any real data comparing Futaba's FASST system vs. JR/Spektrum?

[USN_POPS]

	Quote: Originally Posted by jetjockey69
	Anyone have any real data comparing Futaba's FASST system vs. JR/Spektrum?

I personally think they are all good. It's just a matter of personal preference. The big thing is just going to Spread Spectrum for the added safety.

Last week at out field we were flying and all of a sudden to the north a little park flyer appeared in the air. Everybody landed and shut down. Turned out it was a guy that just left the hobby shop with his new park flyer, and saw the large area 1/2 mile north of our field and took off. he had no clue about frequency control, and interferance etc.

Had one of the 30% IMAC guys been on his channel, it would have been a disaster.

That and the really better sense of control is well worth it.

XPS has a comprison chart at the bottom of their home page. Gve some idea of the differences.

http://www.xtremepowersystems.net/index.php

[Gordito Volador]

Here is a link for the real lowdown on 2.4 and product comparisons from a source other than a manufacturer.

http://www.rcmodelreviews.com/

[NormS]

Here are some links to general information on SS technology. Some of them are a little technical. They look pretty good to me (I’m an engineer with an RF, embedded design and communications background) but I make no claim as to their accuracy. Also, like anything on the web, you can’t always tell how good the info is because you don’t always know who the sources are, or what biases they’re bringing to the party.
-NormS

http://www.maxim-ic.com/appnotes.cfm/appnote_number/1890/
http://www.sss-mag.com/pdf/ds-v-fh.pdf
http://www.sss-mag.com/ss.html
http://wireless.ittoolbox.com/pub/VK042601a.pdf
http://www.sss-mag.com/pdf/Ss_jme_de...ntro_print.pdf