RunRyder RC
 8  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1945 views
Scorpion Power Scorpion Power
HelicopterMain Discussion › 2.4ghz Your thoughts on the conflicts from other​2.4ghz devices.
07-13-2008 01:20 PM  9 years agoPost 1
Shedshredder

rrNovice

United Kingdom

My Posts: All  Forum  Topic

I am like many others about to try a cheap DX6i as a starting point in 2.4ghz.
I,m reading a lot on here about camera gear and other non RC equipment running on the 2.4ghz band interfering with the system, and also of low voltage problems creating crash situations, some of you crashing for the first time using this "New super safe system"
My only reason for moving over to this system was to gain a safety advantage, from what I,ve been reading that dosn,t appear to be guaranteed.
I have my doubts about this technology especialy with the massive price drops on the DX6i.
With more and more flyers shifting over, old FM PPM PCM systems must be getting safer to fly with fewer users around.
I,m very intersted to get some pro,s and cons for both systems, I,m not a club flyer, I,ve only ever had a frequency clash once in 25 years and that was years ago on the old 27mhz system "at a club" many years ago whilst running a 1/5th FG Car.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 01:35 PM  9 years agoPost 2
BarracudaHockey

rrMaster

Jacksonville FL

My Posts: All  Forum  Topic

Power problems are the fault of the radio installation and nothing more. An adaquate power system and any radio will be fine, an inadaquate power or radio installation and any radio will have problems.

As for interference, I've seen it once. With a video system on a UAV that was being tested with a power output that far exceeeds anything a normal user would see. They think the problem occured because they turned it on after the rc system, if the rc system was turned on after the video system it would have found two clear channels. This is based on some supposition and they really arent 100 percent sure what exactly happened.

Andy
AMA 77227
http://www.jaxrc.com

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 01:41 PM  9 years agoPost 3
Mutt

rrKey Veteran

M ca usa

My Posts: All  Forum  Topic

havnt seen anything more then the normal user error or the radio that turns belly up now and then not any more often then any other radio does. If a person is just starting out go with the 2.4 for someone like me it is not worth it have way to much tied up in my 14mz and rx's to justify the cost to convert. biggest issue ive seen with the dx7 is the screen taking a dump.

PM  EMAIL  Attn:RR  Quote
07-13-2008 01:53 PM  9 years agoPost 4
Shedshredder

rrNovice

United Kingdom

My Posts: All  Forum  Topic

Thanks for the reply BarracudaHockey
Its does seem to be a new system with its own teething problems.
I can,t imagine anyone using 35mhz in the UK thinking of using conflicting 35mhz camera equipment.
The 2.4ghz system picks your channels for you?
Do these systems give you any visual indiction of which channel they have selected.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 02:01 PM  9 years agoPost 5
Shedshredder

rrNovice

United Kingdom

My Posts: All  Forum  Topic

Mutt the 14ghz system is tempting, but is it available on a budget.
I,ve only seen high end 14ghz systems here in the UK priced well over £800.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 02:04 PM  9 years agoPost 6
BarracudaHockey

rrMaster

Jacksonville FL

My Posts: All  Forum  Topic

Spektrum boot up goes something like this.

You turn the transmitter on and it searches from 80 available frequencies for 2 open frequencies (they really arent channels in the traditional sense) when it finds two it locks on and begins transmitting.

The reciever meanwhile is searching the same 80 channels for the GUID or id code of its transmitter (this is stored in the reciever during the binding process) when it finds the two channels the transmitter picked it locks on and the lights come on solid. The next radio powered up will see those in use and choose two different frequencies.

If the reciever is turned off, either by the switch, or by a low voltage connection the first thing it does is check those two channels for its transmitter, if its there it connects immediately and resumes control and flashes the lights to tell you there was a problem.

Futaba jumps channels throughout the band landing on each for a few miliseconds, if there's interference there it just moves on, you never would know it.

A reciever wont respond to any signal other than that of the transmitter that its bound to.

Andy
AMA 77227
http://www.jaxrc.com

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 02:06 PM  9 years agoPost 7
AltecLansing

rrElite Veteran

North Carolina

My Posts: All  Forum  Topic

the spektrum picks two channels and bounces back and forth between the two. So far, I think the limitation with that is that you can only have 40 spektrum and or jr radios on 2.4ghz radios on at the same time.

The fasst system constantly shifts from channel to channel. It doesn't pick only two. I haven't seen an outright limit on the number of radios the fasst system could run together.

Both spektrum and fasst radios can run at the same time without issue.

Both radio systems require that you have adequate power or you may experience brown outs or failsafe modes.

No channel indication at all. Its not needed.

Both systems require that the receivers are bound to the transmitters. So, if they even received an errant signal on the same channel, if signal isn't meant for that receiver, it will filter it out.

A while back, 6 channel and 7 channel futaba fasst radios had a q and a problem where by some systems made it out without their own unique id number programmed into them. This left their ids at 0 causing two radios with 0 ids to interact with each other causing issues. Futaba sent out a notice and set up stations to verify whether a radio had a unique id or not. If it didn't, they reprogrammed it. I sent mine in. They emailed me a ups call tag so I didn't have to pay to send it in. They have since beefed up their q and a regarding this id issue so that it won't happen again. This only affected the 6 and 7 channel radios.

I moved from an old skysport radio to the 6 channel fasst radio. It was the best move I have made reguarding upgrades. I hope to upgrade to a radio with more channels in the near future.

Man, I miss the eighties.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 02:16 PM  9 years agoPost 8
Shedshredder

rrNovice

United Kingdom

My Posts: All  Forum  Topic

Thanks AltecLansing that helps with the decision, I had read about the Futaba system problems, and closed the Futaba out as a choice based on that scare.
Your input would also answer why the Specktum DX6i is getting cheaper.
I,ll look into 14ghz and the Futaba options on 2.4ghz

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:01 PM  9 years agoPost 9
toolman18

rrElite Veteran

Portland Tx

My Posts: All  Forum  Topic

How about the rds8000? How does this system work and stand up against the competition.?

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:10 PM  9 years agoPost 10
fenderstrat

rrProfessor

Aston,Pa

My Posts: All  Forum  Topic

Thanks AltecLansing that helps with the decision, I had read about the Futaba system problems, and closed the Futaba out as a choice based on that scare.
this was NOT an inherent programming problem in any sense,it was human error.It affected a VERY limited number of radios,was proptly taken care of and in no way should be a deciding factor in any purchases.the FASST systems have had NO problems in any other area,and certainly far less than spectrum

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:16 PM  9 years agoPost 11
tadawson

rrElite Veteran

Lewisville, TX

My Posts: All  Forum  Topic

Not unless you consider that FAAST receivers have now been found to fail at high temperatures . . . .

And the ZGUID was *not* a human error - they zeroed in operation as well , most typically under low battery or rapid on/off conditions - this was a software screwup in the TX, plain and simple . . .

The ZGUID is supposedly fixed, the temp issue lingers on, so if you are in a particularly hot area (SW United States for instance) it might be a good idea to avoid FAAST for the moment . . .

- Tim

Friends don't let friends become electrotarded . . . .

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:23 PM  9 years agoPost 12
fenderstrat

rrProfessor

Aston,Pa

My Posts: All  Forum  Topic

Not unless you consider that FAAST receivers have now been found to fail at high temperatures . . . .
anything electronic can/will fail at high temps

as far as the ID # the ones that were in question left the factory without being checked for the proper code

has there been any recall/redisign of the FASST stuff?but spectrum is on their third design of the RX's,and the second edition of DSM

I've been flying FASST equip in 98+temps with 90% humidity for 2 summers and never a problem

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:32 PM  9 years agoPost 13
tadawson

rrElite Veteran

Lewisville, TX

My Posts: All  Forum  Topic

"Anything will fail at high temps"

Yeah, but FAAST is failing at typical southern flying field temps, whereas nothing else is having problems. So, looks like another inadequate design spec to me. I mean, c'mon . . . it's not like you can turn the sun down . . .

Oh, and for a lot of folks, 98 is downright cool . . . and humidity is irrelevant from an electronics standpoint, unless it is condensing . . .

And on the ZGUID issue, there were numerous, documented, verified accounts of gear that worked as received zeroing after being in the field for a while. Futaba US did not acknowledge this, but Futaba Europe (Germany, I think) did, and the evidence is out there if you care to search. Heck, Futaba Germany did a full recall, whereas Futaba US just tried to dismiss/ignore the problem . . . It was a very real problem, and much more severe than the US folks ever admitted to, but at least it was taken care of . . .

This link will take you to the discussion on FAAST heat problems . . .

http://www.flyinggiants.com/forums/...html#post505922

- Tim

Friends don't let friends become electrotarded . . . .

PM  EMAIL  GALLERY  Attn:RR  Quote
07-13-2008 07:35 PM  9 years agoPost 14
altima1779

rrKey Veteran

Toledo, oh u.s

My Posts: All  Forum  Topic

I have been flying 2.4 for 2 1/2 years. I started with the dx6 jumped up to the dx7 and now own a x9303 2.4. I have not had one single problem not even a glitch, i should mention that i ran 4.8 volt systems for two of those years on 50 and 90 size machines and never had a brown out.

I love the system and will never go back. Like with anything else you are going to have defective equipment and such thet may lead to questions about the system. I would not hesitate to recommend 2.4 to anyone getting into the hobby or considering switching from 72 mhz.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
07-13-2008 07:46 PM  9 years agoPost 15
HelividD

rrApprentice

Clarkston, MI, USA

My Posts: All  Forum  Topic

I haven't used the FASST systems with the exception of flying a friend of mine's machine, which to be honest, we debate the JR/Spektrum -v- Futaba every time we come out. He is a rep though and I don't argue too much with him. It is all in fun and we both realize the advantages of both systems. Basically like a Ford v Chevy thing..

Back to your question: I think the 2.4ghz is wonderful. At least in my experience thus far(two DX7's and now a 9303 and the Futaba 14 system that my friend has). I am not sure who is experiencing interference from say cell phones or the like, but I haven't had any problems. Either myself, girlfriend, and the majority of people I fly with that are on 2.4(which now, there may be about 2-3 people that still fly PCM/FM). Also, IRCHA last year was amazing for me and that is when I began investigating the advantages/disadvantages of the systems.

As another person stated, if your starting out, go for it with 2.4! If you have like myself, when I upgraded to the 9303, receivers of one brand, then that will guide you in which brand you "may" wish to go with. Whatever brand you wish, contrary to some who are "brand loyal" because nowadays, both systems are pretty much proven by competition(on airplane and helicopters) and non-professional flyers. The thing with us non pro's is that of course we are more prone to err in installation, power systems, etc, SOMETIMES...

I personally think the 2.4 for helicopters and r/c is a humongous jump and boon for the industry. I just go a little Viper slow flyer and because of the 2.4, I had that little thing going in 20 minutes, including the time it took to charge the little battery. I purchased the bind and fly version and I just got back into the hobby last october, but the technology has skyrocketed since I got out in 2001!

My suggestion, simply fly someones machine with 2.4(as long as they trust you) or at least hover it and you will be sold! Good luck in your decision..

D

Every time I fly I loose more hair! LOL

PM  EMAIL  Attn:RR  Quote
07-13-2008 07:54 PM  9 years agoPost 16
fenderstrat

rrProfessor

Aston,Pa

My Posts: All  Forum  Topic

ONE persons problem on ONE thread is not my idea of a problem,and certainly cant be compared to the WIDESPREAD,brownout/static issues that spectrum has had.enough of a problem for a complete recall for the "quick connect"feature

Futaba saw a problem with the id code and remedied it,is it an ongoing problem?,no it is done with.no tx's comming out will have this problem,so it is over and solved

this is not going to be a futaba/spectrum thing.and I wont keep going back and forth

my point was that to not purchase FASST because of a small,very limited problem,that has been eliminated from all current tx's,is not a valid reason.If you hate futaba thats fine,buy what you like,but at least make informed opinions/decisions

edit.I just took the time to read most of that thread,all of the problems talked about are people flying large scale planes with the rx in an enclosed area.still trying to find any heat/heli related fasst issues/posts

Compass helis Support Team
PerformancePlusRC field rep
Mini Titan/SE
TEAM KBDD

PM  EMAIL  GALLERY  Attn:RR  Quote
07-14-2008 01:29 AM  9 years agoPost 17
fritzthecat

rrKey Veteran

Virginia Beach, VA

My Posts: All  Forum  Topic

Futaba saw a problem with the id code and remedied it,is it an ongoing problem?,no it is done with.no tx's comming out will have this problem,so it is over and solved
Uh, no. It is not solved. US Futaba never did recall all the potentially field resetting units. So the 6 and 7ch Tx/Modules are still in the field, just waiting for somebody to hit the sweet spot in power cycling.
From some informal discussions on several fields and hobby shops, I'd estimate that 80% of FASST users never heard of the ZGUID problem. So there may even be factory ZGUID units still in the wild.
I still have my TM-7 module. It tested ok but since it's in the problem serial # range it can still reset. So the problem is clear and present.

Fritz


'Send Money, Women and Guns!'

PM  EMAIL  GALLERY  Attn:RR  Quote
07-14-2008 01:33 AM  9 years agoPost 18
AltecLansing

rrElite Veteran

North Carolina

My Posts: All  Forum  Topic

I hear of this reset issue. Something about turning the tx on and off quickly will cause the id to 0. Even though I had mine checked, I had never had a problem of the id resetting to 0 from turning it on and off quickly either before or after the check. How about some details on this and to hear from people in the states that have had this problem.

Man, I miss the eighties.

PM  EMAIL  GALLERY  Attn:RR  Quote
07-14-2008 05:20 AM  9 years agoPost 19
drdot

rrElite Veteran

So. California,​Orange County.

My Posts: All  Forum  Topic

fwiw..
Our field will not allow operation of more than one FASST system at a time unless all FASST pilots present have verified non interference with ALL units.

John.

PM  EMAIL  Attn:RR  Quote
07-14-2008 09:01 AM  9 years agoPost 20
Busher

rrKey Veteran

Manchester, England

My Posts: All  Forum  Topic

I changed from 35mhz to spektrum 2.4 last year, I have found it to be a better all round radio system. The model match aids safety on the field along with the non requirement for crystals. I had zero probs with 35mhz, as well but the added benefits of 2.4ghz are great. Our club has little or no pegboard discipline and when your flying an expensive aircraft its nice to know your not going to get knocked out of the sky by a pegboard incident. The response times from the radio to the receiver on ccpm are noticable and give better flying response and feel, all in all I am sold on this stuff and won't be going back unless am forced to do so.

Good luck
Busher

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1945 views
Scorpion Power Scorpion Power
HelicopterMain Discussion › 2.4ghz Your thoughts on the conflicts from other​2.4ghz devices.
 Print TOPIC  Make Suggestion 

 8  Topic Subscribe

Saturday, November 25 - 12:10 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online