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HomeAircraftHelicopterMain Discussion › Radio manufacturer suggestion.
10-17-2005 12:53 AM  12 years agoPost 1
Jeff H

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Cincinnati, OH

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While reflecting on a hot start I had a month ago, I was wondering (when a single TX can control 30 or more aircraft) why isn't there some model recognition software in the reciever???

for example: using a radio, couldn't the reciever have a code that it used on a spare channel to identify itself as a particular model and if the Tx was on a different model, the Rx wouldn't work?????

How hard would it be to implement something like that?


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10-17-2005 01:02 AM  12 years agoPost 2
ant_mb

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United States

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Im sure they can put anything in the TX, but the question is will you pay for it.

Anthony

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10-17-2005 01:11 AM  12 years agoPost 3
GRINCHMAN

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IL

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I would pay for that.

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10-17-2005 01:13 AM  12 years agoPost 4
brooksnb

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Sussex , New Brunswick , Canada

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I just read another thread that stated that thre already is a TX with a similar feature...It is time the big boys of TX start to pick up on this great feature as well.

Never, under any circumstances, take a sleeping pill and a laxative on the same night.... Dennis

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10-17-2005 08:16 PM  12 years agoPost 5
ProModeler

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Sanford, FL (Orlando area)

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I can't speak for other brands but this is an available feature of the Futaba 14MZ as long as you are using a compatible G3 receiver. I suspect they can't go back and add the logic and circuitry to old receivers naturally enough. It is a pricey setup though, over $2000 for a transmiter and receiver alone (sans servos). Extra receivers are in the $300+ range.


John Beech
AMA # 47381
IRCHA #745

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10-17-2005 09:37 PM  12 years agoPost 6
rroback

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Irvine (UCI), Ca

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Well, that's not quite a feature of the 14mz. the 14mz has that ability, shortrange, to communicate with the receiver, and then with that connection, to change frequencys. That feature is wonderful, i think what your saying is while flying, to elliminate being shot down. spread spektrum that jr started marketing for car radio's theoretically could do that, but that is not out there for heli/airplane market, and I've heard reports of it being a sluggish response..

Rhett..... I can't fly, but the Profi sure can.

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10-17-2005 11:52 PM  12 years agoPost 7
ProModeler

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Sanford, FL (Orlando area)

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Hmmm rroback, I understand what you are saying, but I responded to Jeff H asking . . . "for example: using a radio, couldn't the receiver have a code that it used on a spare channel to identify itself as a particular model and if the Tx was on a different model, the Rx wouldn't work?????"

. . . since each G3 receiver is coded (though not on a separate channel), and when you set up a new model in the 14MZ you "must" input the code for that specific G3 receiver as part of the model set up, what results is that when you turn on the wrong model it simply doesn't work - I stand by what I wrote. Naturally this feature doesn't exist for old-style receivers, only the new G3 receivers.

For example, I have a couple of models built for demo purposes for fun flies. They're as close to identical as I can make them expressly so if one gets stuffed the next one can be put on the flight line quickly. Each has a G3 receiver, and if I inadvertantly pick up the wrong model, it doesn't work despite being on the same frequency (nice because I already have the pin). This is a nice feature of the 14MZ.

As for the changing of frequencies, this is a very nice feature of the 14MZ because unlike with our 9ZHPS, we don't have to unwrap the receiver to change the dials (for setting the frequency) because you just need to put the transmiter's antenna in close proximity of the receiver. By the way, JR has a nifty equivalent of this where you simply change the dial on back of the transmiter module only. However, I don't know if the receivers are coded alá the Futaba G3 receivers.

Have I misunderstood something?


John Beech
AMA # 47381
IRCHA #745

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10-18-2005 05:41 AM  12 years agoPost 8
rroback

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Irvine (UCI), Ca

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That's pretty cool, but please correct me if I'm wrong, you can still get shot down...if someone else turns on your channel, you'll still get those freak signals?

Rhett..... I can't fly, but the Profi sure can.

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10-18-2005 04:00 PM  12 years agoPost 9
ProModeler

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Sanford, FL (Orlando area)

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You are absolutely correct . . . and I, and all fliers, eagerly await spread spectrum technology - or something, call it what you will - which removes the danger of shoot downs!


John Beech
AMA # 47381
IRCHA #745

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10-18-2005 04:24 PM  12 years agoPost 10
Jeff H

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Cincinnati, OH

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That's a pretty cool feature of the 14MZ, now if the manufactures could just figure out how to bind recievers to specific model memories in the Tx for less than $2000.00 I might buy one.

It could be real simple. On an unused channel like channel 8, the reciever would only work with a certain pulse length comming in on channel 8. Then you could set up your Tx to transmit on that pulse width for that channel...Seems easy to me.


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10-18-2005 04:26 PM  12 years agoPost 11
Coloradoheli3d

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Colorado USA

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I agree with jbeech, you have to put a 4 didgit code for the reciever, and i have turned on the wrong model with the G3 and it don't work.

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10-18-2005 05:54 PM  12 years agoPost 12
webbhost

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england - Leicester

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it would probably eliminate the need for channels, but slow transmit time.

If your controller has to send information as

Cylic1+1(WBHSHELI)
Cylic1+2(WBHSHELI)
Cylic1+3(WBHSHELI)
Cylic1+4(WBHSHELI)


instead of

Cylic1+1
Cylic1+2
Cylic1+3
Cylic1+4

Its alot more information it needs to send, thus slowing down reaction speeds, and would result in a less lifelike "realtime control"

As far as im aware anyway. Im not saying its a bad idea, by all means it sounds like a sweet idea, as many people as you want flying, no more channel fights at flyins etc.

But as someone mentioned above, wouild you be willing to pay the price.
For that kind of software and hardware you are probably looking into the £1-2000 priceline.

A little too much for me

Also sending a identification signal along with your inputs just makes 1 more problem that can arise

meh

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10-18-2005 08:17 PM  12 years agoPost 13
Rafael23cc

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Junction City, KS

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A few months ago, Scott Glasgow (former JR Rep in Central US) (KS< OK MO TX) performed a simple test with his new synthetized module and receiver on a JR radio.

Scott went down the line asking who had a JR radio in whatever frequency. He set his radio and heli to the other person's frequency. He turned on his radio and heli. After the heli had acquired the tranmitter, he asked the other person to turn on their radio, NOTHING HAPPENED! Scott kept full control of his heli even with the other radio right next to him. The heli was on the ground and engine off for safety reasons.

Scott wanted to try this with a JR radio because of the difference in positive and negative shift between the Futaba and JR radios. He wanted something on the exact same frequency and shift as his radio and it worked.

As far as recognizing the model, JR is not there yet, but I bet that soon they will be.

Just wanted to share a story.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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10-18-2005 11:02 PM  12 years agoPost 14
ProModeler

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Sanford, FL (Orlando area)

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I met Scott the other day at a fun fly in Springfield, MO (a classy guy and an excellent pilot too) and I appreciate hearing this story. Yup, we all have hope of better things to come folks!


John Beech
AMA # 47381
IRCHA #745

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10-18-2005 11:05 PM  12 years agoPost 15
FlyinBrian

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USA

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Jeff, you fly jr and complain about the price of stuff?

On a new pcm rx design / tx (software update) they could do it very easily, The transmitter would transmit the receivers code for the first 30 seconds (every 10th frame so we could still operate the model with slightly degraded performance) once it was turned on, the receiver would simply wait for that code before activating. Each receiver has a unique code and you enter it into the model data for each model. No spare channel or anything needed, would'nt work on fm though.

The problem is untill someone does it and we quit buying thier current stuff there is no motivation for the manufactures to do this. After 30 years of development look where we are today, we should be flying on a proprietary spread spectrum "like" format where freq pins and interferance would be non existant.

Auger

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10-18-2005 11:17 PM  12 years agoPost 16
Rafael23cc

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Junction City, KS

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John:

You met me too at the Springfield fun fly. But i bet that you met so many people that I do not blame you if you forgot some...

This little experiment happened at the Salina, KS fun fly just s few weeks before.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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10-18-2005 11:44 PM  12 years agoPost 17
Jeff H

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Cincinnati, OH

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Jeff, you fly jr and complain about the price of stuff?
I'm not the one that bought a 14mz....... speaking about the price of stuff. JR transmitters are practically a bargain in comparison.


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10-19-2005 03:09 AM  12 years agoPost 18
FlyinBrian

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USA

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Jeff, being realistic in a given situation and complaining about prices are two completely different things. Where is that jr add when you need it I'll probably be down to your field next week if the weather is good.

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