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Any truth to rumors that JR switching to frequency hopping FASST system?

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Any truth to rumors that JR switching to frequency hopping FASST system?

Old 09-15-2010, 12:59 AM
  #1  
sskianpour
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Default Any truth to rumors that JR switching to frequency hopping FASST system?

Okay guys, I know this thread has about a 4 day life span before the moderator shuts it down after JR vs. Futaba vs. Weatronics guys make it ugly, but hear me out.

About 2 weeks ago my friend George (Aquakiman) started an interesting thread where he requested a survey of how many JR vs. Futaba users there were. Well, all the flame throwing and hate-threads aside, there was some VERY useful info being posted where apparently there were RUMORS that JR was switching from DSM2 to a frequency hopping system and had ALLEGEDLY done so already in Japan and then later in Australia.

Before I could read up on all this good stuff and before I could follow all the threads and links some of you nice fellow Jet/RC fliers posted, and before I could verify any of these rumors, the thread got ugly and was shut down by moderator.

1. I fly JR 12X. I fly expensive jets. I have NO problem selling my $3500 in high end 2.4 JR equipment ($1500 JR transmitter + $1800 worth of receivers (SIX JR 1222 $300 receivers) + another $250-300 worth of JR goodies ) to a fellow member for $2000 and switching to Futaba IF it helps me save a jet some day.

For me, that's a $1500 loss in radio moneys spent and a whole bunch of reprogramming time I will have to invest, and for somebody else they will get a ridiculously great deal from me on a perfectly great working radio, in exchange for not having one of my $8000 jets go SPLAT!

2. I have NEVER lost a plane due to radio/Tx/Receiver malfunction on my JR 12X system...so no, that is not my concern...at this time...

3. ...But if JR is switching to the Frequency Hopping technology used by Futaba, then I dont want to keep investing in DSM2 parts and spend another $10000-2000 over the next couple of years, and then be left in the cold when JR makes a switch.

4. PLEASE DON'T TRY TO CONVINCE ME WHICH IS BETTER, AND PLEASE DONT PUSH WEATRONICS ON ME, NOR TRY TO CONVINCE ME WHETHER I SHOULD KEEP OR SELL MY JR STUFF, NOR START HIJACKING THIS THREAD TO PROMOTE YOUR RADIO BRAND. JUST PLEASE PLEASE PLEASE PLEASE DON'T!!

I AM ONLY ASKING IF PEOPLE HAVE HEARD ABOUT JR SWITCHING TO FREQUENCY HOPPING LIKE FASST IN JAPAN OR AUSTRALIA, AND IF YES, CAN YOU POINT ME TO SOME RELIABLE NEWS SOURCES AND THREADS PROVING SUCH SO I CAN DO MY OWN DECISION MAKING

Thanks a million in advance to those who contribute, and please any Japanese or Aussie fliers out there, chime in, and thanks for keeping it civil folks so this thread gets somewhere.

Cheers,
Shaz
Old 09-15-2010, 01:16 AM
  #2  
ira d
 
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

There sure has been a lot of chatter in recent weeks on this and other forums about this subject including pictures of the the new JR 7ch said
to soon be released in some overseas markets. When you take into account that many people feel the current JR system is not as relable as
other systems on the market thenI think its a given that JR will have tomake some changes if it wants tobe a viable player in the market.
Old 09-15-2010, 01:32 AM
  #3  
Xantos
 
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Hi Shaz ,
The fact is that JR has launched the DSMJ system in Japan and in some parts of Asia
I guess its too embarassing for JR to admit that the DSM2 has problems especially when there are so many DSM systems all over USA.
Why else would JR have two systems DSM2 and the DSMJ commercially available ?
Whatever the reason its fairly obvious that either the DSM2 is not as good or the DSMJ is better - why else would JR market 2 different technologies with the 2.4 range ? I can assure you its not purely to give the customer the choice
I am in a similar situation like you - I switched to JR when I started flying jets initially on 35mhz and later to 2.4 with the plugin module system and now I have the 9Xii (9203) and also the 12X.
However since 2006 I have lost around 3 jets on this system.
I am thinking of switching back to Futaba as well.
Other than some failures that Futaba 2.4 receivers had due to high temperature I have not heard anything negative.
Im planning to switch to the Futaba 14MZ - I know I'll miss the JR programming that Im used to .

Old 09-15-2010, 01:47 AM
  #4  
tahfiet
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Hi Shaz!

These rumors where around already a year ago! And it does make sense, because the japanese have almost the same laws regarding 2.4GHZ usage as in germany. We are only allowed to run 100mW on hopping systems like Futaba and 10mW (!!) for non hopping systems. The german DSM systems work with a maximum output of 100mW where they have up to 1W peaks in the US. I would not trust a DSM-system on 10mW like it should be in japan. And so does JR, we have to remember that the DSM-technology was developed in the US and for the US.

BR,

David
Old 09-15-2010, 01:58 AM
  #5  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

There is so much rubbish spoken on this forum and I don't have time to go into detail as I'm getting ready for JP.
There is nothing wrong with DSM-2, I have never had a problem and neither have 60+ JR DSX-12 DSM-2 radio customers...90% of which fly jets.
Although JR are switching its not a system problem, its a relationship one as far as I can see. Spektrum DSM-2 systems are by far the greatest used, (JR and Spektrum) so I would expect more problems. I could write a book on things customers have done that have caused problems though lack of thought.

I love DSM 2 in my JR and Spektrum gear and I for one will continue using it, JR will support it (who owns DSM-2? Err Horizon in the USA?...JR in the USA!!) even if JR decided not to make DSM-2 Rx's Spektrum still do and there are quite a few people who buy the cheaper ticket price Spektrum stuff over JR branded.

If people remember there was a question over DSM-2 in the way it operates and that is why Japan ended up with DSM-J because their goverment ruled it...doesn't mean it better!!

Stick with your JR/DSM-2 systems, I've stated before that if I had to fly Futaba i'd take up boating and I stick by that!

Dave Wilshere
Old 09-15-2010, 02:47 AM
  #6  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

This seems to be a plausible hypothesis that explains the JR 2.4 failure rate !
This is also the reason JR has launched the FHSS system ala Futaba in Japan.
Its called the JR DSMJ !
I would consider Futaba if it were not for the various DOTS
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JR/Spektrum DSM2 Weakness Revealed

WHEN YOUR REDUNDANCY ALL BUT DISAPPEARS

Dated: 23 Feb 2010

While tidying up some of the final reviews for the great 2.4GHz Spread Spectrum RC system shootout, I discovered something very disappointing about the Spektrum/JR 2.4GHz DSM2 system.

As stated in the review, the DSM2 system is generally quite good. It uses two separate parts of the band and has a good degree of "spread" for each of its chosen frequencies, thus ensuring that under normal conditions, DSM2 provides a robust and resilient link between transmitter and model.

However, while doing a little more testing, so as to get a couple of extra screen-shots I discovered something surprising.

The 2.4GHz environment inside my metal-clad workshop is very clean. Being located some distance from the nearest population center and with the metal walls/roof providing excellent screening against external signals, the noise level is extremely low.

In such an environment, any 2.4GHz system turned on will see a band that is entirely free from potential interference and should therefore seek to take advantage of this.

In the case of the DSM2 system, that means I would expect it to allocate itself two channels that were separated by a good wide gap such that if one were hit by interference, the other would likely be well clear of the offending signal.

[img]x-msg://2/images/reviews/dsm2fail1.jpg[/img]

Well the spectrum analyzer scan above shows what I got when I turned on a JR DSX9 in this "clean" environment.

As you can see, on this occasion it has randomly chosen two channels but they are so close that they actually overlap.

Now, in a perfect world and in 99.9% of real-world situations, this won't be a problem and I should emphasize thatthe sky is NOT fallingfor JR/Spektrum users.

The reality is that because of the resilient nature of a spread-spectrum transmission it would still take a reasonably strong signal to knock out the link created by the DSM2 system, even with these closely-spaced channels.

[img]x-msg://2/images/reviews/videosender.jpg[/img]

In order to see what would happen when just such a "reasonably strong signal" was about, a video-transmitter was turned on and tuned so that it clobbered both of the narrowly spaced channels. A spectrum analysis of the video-transmitter on its own is shown above.

Using a 600mW 2.4GHz video transmitter, I found that the receiver only needed to be equidistant from both the DSX9 and the video transmitter's antenna for loss of control to be experienced. This surprised me a little I'd expected more resilience from the DSM2 system but, having said that, analog signals such as video transmitters are really not spread-spectrum-friendly.

[img]x-msg://2/images/reviews/dsm2fail2.jpg[/img]

The above image is a scan of the video sender and the original closely-spaced DSM2 signals interfering with each other. As you can see, the video transmitter's signal has almost completely obliterated both channels of the DSM2 system because they were too closely spaced.

When the two channels were spaced further apart (as is usually the case), so that one was not covered by the video transmitter's signal, the range of the DX9 radio was unaffected. However, on those rare occasions when they are close together (as in the image above), the effect of a modestly powerful video transmitter is significant.

This is not so good. In fact I think it's fair to say that it's not the kind of poor performance you'd expect from a "brand name" 2.4GHz radio system.

In effect, this means that if you were unlucky enough to have your Spectrum/JR radio select two closely spaced channels and someone was using a video transmitter on the same part of the band (effectively clobbering both DSM channels) then, should your model flew closer to that transmitter than it was to your own, you'd risk a lockout.

When the Spectrum/JR system selects two channels this close together, your expensive radio performs no better than a super-cheap FlySky radio, offering virtually no redundancy in the event of strong on-channel interference.

And, should this situation occur in the real-world, no number of satellite receivers, voltage regulators or other "bits" will help. Once the interfering signal overpowers the one from your transmitter, your model is at risk.

In testing, it appears that when turned on in a low-noise environment, the DSM system selects its operating channels at random and very occasionally (because those assignments are random), they happen to be almost on top of each other.

My question to JR is: Why?

Any sensible designer would have included a check to make sure that when the band allows for it, the two channels should always be spaced by a sensible amount. This clearly is not happening.

So, if you're a JR/Spektrum flier, should you sell all your RC gear and switch to something else?

Probably not. As I have said, most of the time the DSM system does select channels that are sufficiently spaced to provide a good level of redundancy and resilience. What's more, if you're flying in a relatively benign RF environment then the close proximity of the two channels that can occur on occasion won't have any effect. On the rare occasions when the JR/Spektrum radios do choose two adjacent channels, the effect is simply that your risk of lockout is increased but only if there just happens to be strong noise on that small part of the band.

However, if you have already encountered previously "unexplained" lockouts and failures at your field when flying DSM-based systems then perhaps this could be part of the cause.

As a JR owner (I have a 9XII/9303) I would not use Spektrum as my upgrade path to 2.4GHz unless they fix this flaw. While the odds of this actually causing a crash are low, they still exist and, given that it could be fixed with a minor software revision (that mandates a sensible minimum for the spacing of the two channels used), I see no reason not to suggest that such a fix be implemented.

With the onslaught of cheap (and increasingly good) Chinese-made equipment, much of which is now fully certified for use in the USA and EU, "brand name" manufacturers are going to have to step up their game if they want to retain marketshare. Even other companies with a strong global presence (such as Hitec) are now nipping at the heels of a technology that, in the case of DSM2, could do with some tidying up.

If you're a satisfied (or dissatisfied) JR/Spektrum user who'd like to have your say on this article, please email me and I'll append the comments below.

If JR/Horizon have an answer to the puzzling question as to why the system should significantly nullify the benefits of a dual-channel operation by allocating channels so closely spaced, I'd like to hear (and share with readers) that explanation.

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Old 09-15-2010, 02:53 AM
  #7  
Xantos
 
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Dave ,
I'd like to believe what you say but my experience with DSM2 says otherwise.
I'm still flyin JR but thats only until a more robust system is available.
Its not a Futaba - JR thing

Old 09-15-2010, 04:19 AM
  #8  
HarryC
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

To answer the original question, yes JR has developed its own FHSS and it is not DSMJ. DSMJ is special version of Spektrum's DSM for the odd regulations in Japan. The entry level set is the JR XG7, it supports telemetry, and should be in production next month. This is a completely new system, not based on Spektrum's DSM system and breaks JR's reliance on Spektrum's DSM systems. For those with JR DSM systems, Spektrum will still be continuing and therefore expect DSM Rx etc to continue to be available.

However, in the USA the JR importer is Horizon, who also owns Spektrum, so whether they will take the new JR DMSS system, or take blank JR Tx and fit them with their own Spektrum DSM modules and block DMSS from the USA market remains to be seen.

Harry
Old 09-15-2010, 07:43 AM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

The report from Xantos does indeed make sense if that happens in a regular basis. I fly JR/Spektrum, Futaba, and Airtronics 2.4 and have not had any 2.4 related problems with any of them. I do know some folks in my area that have lost planes due to their JR just "quitting". I have also seen a friend's 12x lose bind with two different planes at two different fields 8-9 months apart. My dad has had ZERO trouble with either 9303 2.4 radios he has, and he flew at Joe Nall. He reguarly checks his counter gizmo and has very very few drops and fades. What will happen once his 9303 grabs two empty channels that are too close together....we will not know until it happens.
I wish there was a way to log what channels the systems grabs, and how often it changes between the two.
Old 09-15-2010, 08:01 AM
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mk1spitfire
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

I wonder if JR will pull the plug on dsm2 in the USA or spectrum? You don't have the unelected European bureaucrats making power output regulations as we do here,similar to Japan for dsmj.

Has anyone actually asked JR USA what they are doing?
Maybe you will have a choice of dsm2 or dmss as I believe you don't have any TX power output hassle.

Who's to say its not a conspiracy from futaba and JR lobbying European frequency output legislators to oust spectrum dsm2 over 10mw so they can claw back some of TX sales pie?

Why isn't UK standing up to Europe and telling them where to go, so we can set our max TX output like USA is free to do.?
Old 09-15-2010, 08:04 AM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?


ORIGINAL: HarryC

To answer the original question, yes JR has developed its own FHSS and it is not DSMJ. DSMJ is special version of Spektrum's DSM for the odd regulations in Japan. The entry level set is the JR XG7, it supports telemetry, and should be in production next month. This is a completely new system, not based on Spektrum's DSM system and breaks JR's reliance on Spektrum's DSM systems. For those with JR DSM systems, Spektrum will still be continuing and therefore expect DSM Rx etc to continue to be available.

However, in the USA the JR importer is Horizon, who also owns Spektrum, so whether they will take the new JR DMSS system, or take blank JR Tx and fit them with their own Spektrum DSM modules and block DMSS from the USA market remains to be seen.

Harry
HarryC, you ACTUALL ANSWERED MY QUESTION!!! [sm=cry_smile.gif][sm=biggrin.gif] (crying with joy that somebody actually did instead of just giving me their opinion

Now, question #2, any articles, websites, Youtube, etc...verifying this stuff?
Thanks guys for keeping it civil-so far.
Shaz
Old 09-15-2010, 09:21 AM
  #12  
HarryC
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Shaz, that info came from the UK JR importer. Also if you google JR XG7 you can find articles on it at for example runryder helis, photos of it etc.

Harry
Old 09-15-2010, 09:47 AM
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HarryC
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

ORIGINAL: mk1spitfire

I wonder if JR will pull the plug on dsm2 in the USA or spectrum? You don't have the unelected European bureaucrats making power output regulations as we do here,similar to Japan for dsmj.

Has anyone actually asked JR USA what they are doing?
Maybe you will have a choice of dsm2 or dmss as I believe you don't have any TX power output hassle.

Who's to say its not a conspiracy from futaba and JR lobbying European frequency output legislators to oust spectrum dsm2 over 10mw so they can claw back some of TX sales pie?

Why isn't UK standing up to Europe and telling them where to go, so we can set our max TX output like USA is free to do.?
JR can't pull the plug on DSM, since DSM belongs to Spektrum. JR had an agreement to use it. Reading between the lines, JR got itself locked into an agreement it was not happy with and has been looking for a way out, though there is no indication that this was for any technical reasons or the quality of DSM's link, rather for commercial reasons. DSM will keep going as long as Spektrum wants it to.
There is no conspiracy from JR or Futaba regarding DSM over 10mW. All the trouble in Europe has come from the computer wi-fi industry, principally from an American firm Cisco! Cisco wants all model r/c systems to be banned from 2.4GHz in Europe, cheeky sods. In investigating this, the relevant authority saw how DSM exploits poorly worded regulation which has prompted it to draft much clearer rules, but these have yet to be published and ratified. In the meantime the BMFA tech specialist has gone public in writing saying the scare stories about the revised rules affectively banning DSM from using more than 10mW are just that, scare stories.

So, DSM will continue as long as Spektrum keeps it going, and JR for commercial reasons is getting out of its agreement with Spektrum and has developed its own frequency hopping system.

Why would you need, rather than just want, more than 100mW? At extreme visual range my jet as measured by its GPS unit is 1/2 mile away and the radio range in the air is a couple of miles. The power limit is derived from the need to work with all the others in the band, who is to say that UK alone without Europe would have allowed more than that? Might have allowed less or even none at all! The power limit is not set at 100mW just for r/c systems in the way that it is in the 35MHz dedicated r/c band, the 2.4Ghz rules are for all users of which we are nothing more than a pimple on a gnat's whatsit in terms of number of users.

Harry
Old 09-15-2010, 11:10 AM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Outstanding post from HarryC... the sky is not falling, we are just having more options.


Enrique
Old 09-15-2010, 10:11 PM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Rumors are rampant:

[link]http://www.rcuniverse.com/forum/m_9964265/anchors_9985626/mpage_2/key_/anchor/tm.htm#9985626[/link]

JR should address these rumors because if they're not true, they're going to hurt sales.
Old 09-15-2010, 11:10 PM
  #16  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Other than some failures that Futaba 2.4 receivers had due to high temperature I have not heard anything negative.
just as an FYI , for those looking to switch/upgrade to Futaba, it is also noteworthy that the 12FG has some occurrences of problems with either the pots or the associated circuitry.. (search for 12FG issues with POTs) .. Basically the pots go out of trim, this has happened to some guys in the air and caused aircraft loss.. Some of these issues also manifest themselves with a cross mixing between the sticks without any mixes actually being programed. I returned my 12FG and exchanged it for a 12Z for $500more after experiencing this issue myself on a brand new radio. FWIW the 12z has the same POTS and gimbals assembly as he 14MZ ... so having said that, for me at this point FASST is the way to go (the logic of the technology alone even makes more sense) , however there are clearly various problems and issues on all sides of all fences (some worse than others .. )

~V~
Old 09-15-2010, 11:43 PM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

No radio is 100%
We just had an event that had 100 to 200 flights in a two day period that were giant scale to jets ( all JR/Spectrum ) and not one loss or glitch that was announced.
Sure it happens but to say a brand does not have a problem is BS, if its not they have a bridge they would like to sell you.
Old 09-15-2010, 11:50 PM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Guys, again I please ask that we try to keep this thread on point. Once again I AM NOT asking for people's personal opinions about which radio they prefer or trust more.

I just want to know what the facts are:

1. IS JR MARKETING A TYPE OF FREQUENCY HOPPING SYSTEM SIMILAR TO FUTABA'S FASST IN OTHER COUNTRIES?

2. IS THERE PROOF OF THAT?

3. AND IS THERE ANY LITERATURE, LINKS, YOUTUBE, ETC... THAT MAY SHOW WHY JR IS DOING THIS?

4. AND FINALLY, IS THIS A PRECURSOR TO JR SWITCHING FROM DSM2 TO FHSS?

Again, PLEASE, this is NOT a personal opinion thread, it is a fact finding thread and I would like to keep it that way so the moderators dont shut it down.

Thank you very much in advance for understanding and respecting these wishes!
Shaz
Old 09-16-2010, 12:25 AM
  #19  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

No one will be able to get acommit out of JR or Spektrum untill they are ready to introduce something into this market so dont hold your breath while waiting.

But im sure JR will have to back away from the DSM2 systemsooner than later but no one can say when for sure. But if you want proof do a google search
the info is out there as to what JR is doing in other markets.
Old 09-16-2010, 02:02 AM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?


ORIGINAL: sskianpour


ORIGINAL: HarryC

To answer the original question, yes JR has developed its own FHSS and it is not DSMJ. DSMJ is special version of Spektrum's DSM for the odd regulations in Japan. The entry level set is the JR XG7, it supports telemetry, and should be in production next month. This is a completely new system, not based on Spektrum's DSM system and breaks JR's reliance on Spektrum's DSM systems. For those with JR DSM systems, Spektrum will still be continuing and therefore expect DSM Rx etc to continue to be available.

However, in the USA the JR importer is Horizon, who also owns Spektrum, so whether they will take the new JR DMSS system, or take blank JR Tx and fit them with their own Spektrum DSM modules and block DMSS from the USA market remains to be seen.

Harry
HarryC, you ACTUALL ANSWERED MY QUESTION!!! [sm=cry_smile.gif][sm=biggrin.gif] (crying with joy that somebody actually did instead of just giving me their opinion

Now, question #2, any articles, websites, Youtube, etc...verifying this stuff?
Thanks guys for keeping it civil-so far.
Shaz
I got the same answer when I spoke to the UK JR Importer at the UK Nationals. It is a different System that JR are introducing. I also think this is the reason the new 11X Zero is a modular radio in the UK to allow if people want to stick with DSM2 or move to the new JR System when it comes out. Also there is a challange in Europe that DSM2 is illegal and this will be determined in a year or so. So I guess JR are hedging their bets.

Either way I am sure we will all be able to use a 2.4 system which if far better in so many respects than the old 35 or 72 Mg

Dennis
Old 09-16-2010, 03:35 AM
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HarryC
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?


ORIGINAL: sskianpour

Guys, again I please ask that we try to keep this thread on point. Once again I AM NOT asking for people's personal opinions about which radio they prefer or trust more.

I just want to know what the facts are:

1. IS JR MARKETING A TYPE OF FREQUENCY HOPPING SYSTEM SIMILAR TO FUTABA'S FASST IN OTHER COUNTRIES?

2. IS THERE PROOF OF THAT?

3. AND IS THERE ANY LITERATURE, LINKS, YOUTUBE, ETC... THAT MAY SHOW WHY JR IS DOING THIS?

4. AND FINALLY, IS THIS A PRECURSOR TO JR SWITCHING FROM DSM2 TO FHSS?

Again, PLEASE, this is NOT a personal opinion thread, it is a fact finding thread and I would like to keep it that way so the moderators dont shut it down.

Thank you very much in advance for understanding and respecting these wishes!
Shaz

You take some convincing Shaz! Ok, this first link is to a post from Mac-man who represents the UK importer of JR
http://www.rcmf.co.uk/4um/index.php/...html#msg826504

These are shops listing the XG7 Tx, or DMSS items like Rx, coming soon
http://www.flying-hobby.com/shop/ind...&article_id=26
http://trexmad.com/zen/index.php?mai...4f576dd3013764
http://www.infinity-hobby.com/main/n...ewsdesk_id=453

The JR distributors are not yet officially publicly advertising the new DMSS systems, presumably that will wait until they have them, but the word is out now, the UK importer is publicly aknowledging the system (see first link) and their shops are beginning to advertise them in advance. It is real!

Why is JR doing this? Best info available is that they didn't like the commercial agreement they were locked into with Spektrum, their is no rumour that they felt DSM2 is inferior.

JR will be switching over completely from DSM2 to their own DMSS system, timescales not known at the moment.

It would not be entirely right to say JR DMSS is like Futaba FASST, any more than it would be like Multiplex M-Link or like Weatronics 2.4, or like Sanwa/Airtronics 2.4 or like Hitec AFHSS etc etc. They are all channel hoppers, unlike DSM2, but their similarities end there as they are all incompatible with one another.

Harry

Old 09-16-2010, 04:19 AM
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

ORIGINAL: HarryC



All the trouble in Europe has come from the computer wi-fi industry, principally from an American firm Cisco!
Cisco wants all model r/c systems to be banned from 2.4GHz in Europe, cheeky sods.
In the meantime the BMFA tech specialist has gone public in writing .

Why would you need, rather than just want, more than 100mW?

Harry
Nice one Harry.

Intersting source you found of the trouble.

Have you got a link to that BMFA public announcement?

I dont want more than 100mw. 100mw works fine here,even though USA TX operate at even higher power out of 500mw(I think).

Sometimes I hear the excuse for low power tx here is that USA is a bigger country and therefore they can operate at higher power output but that makes no sense as they fly next each other at flying clubs with no 2.4ghz interference, but thats another subject.

It seems that non moudule based systems wont be upradable then to dmss?

So whats happens to Spectrum sets which are all non modular if 300-328 revision happens to reduced 10mw. Will it turn about face as they adpot JR dmss?

Part of the attraction of non module systems was decreased latency avoiding using ppm as the medium.

I think JR uk 11x has no latency issues even though modular and doesn't use ppm as the medium.

Will magregor even bother getting CE approval for dedicated 11x if they are working on a dmss modul?

How long before dmss CE approval?

Will the usa JR 11x be non upgradable to dmss unlike UK JR11x which is modular based? Surgery needed?

Is XG7 module based or dedicated?

Old 09-16-2010, 04:59 AM
  #23  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Harry

Just want to get a couple of things straight.

MacMan used to work @ MacGregors but no longer does, he does however do some of our service work off site. Just want to clear that up before we get into trouble again!

Mk1

We have asked JR for an upgrade route for existing sets such as the DSX9 & DSX12. We are waiting for them to reply to that question.

I think that if DSM2 is deemed non-compliant (very much doubt that will happen) then they will swap to DSMJ which is a derivative of DSM2 and is frequency hopping.

Yep, the 11x Zero has all of the features of the integrated set, just in modular form. It doesn't use a PPM system to transmit like the after market modules, it has a dedicated DSM function in the modulation section of the menus. This means that you get all of the features such as servo sync and model match ect. with the bonus of being able to still use your 35mHz equipment or fit an after market module if that is your preferred transmission system.

As far as I understand it we will be getting fully integrated DSM2 DSX11's around xmas time with fully integrated XG11's part way through next year.

The XG7 is in the test house now and is due to arrive in the UK in October and is a fully integrated system.

Hope this clears a few things up!

Steve
Old 09-16-2010, 05:15 AM
  #24  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Cheers Steve.

XG11? Is that a new dmss set with 11 channels? Do tell more,LOL

I wonder when you will get news of a dmss module for the uk JR11x. Will it utilise the direct dsm within the set like an older 9x2 utilised the ppm or will it require some surgery to the set for that to work..?
Old 09-16-2010, 05:22 AM
  #25  
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Default RE: Any truth to rumors that JR switching to frequency hopping FASST system?

Mk1

The XG11 will be a DMSS integrated version of the 11x zero. Thats all the info I have for now apart from its not due until some time next year.

Not got any info on the DMSS module yet either, sorry.

Steve

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