RunRyder RC
WATCH
 9 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 6192 views POST REPLY
HomeAircraftHelicopterMain Discussion › DX7, Ducky, Just Ducky, Wunderful Mods Like "ON" Lamp Newly Installed
11-17-2014 05:05 AM  3 years agoPost 21
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

If this were in my back yard, I'd be calling the FCC tomorrow. This is no joke. Flight safety depends on going with the system as designed under pertinent regulations and engineering standards.

Just what do you intend to accomplish with this? You might end up in jail at worst. At best you might get hit with a lawsuit, or on the nose, when you shoot down a model. No good can come of this and quite frankly your hubris in the face of legitmate questions concerns me. It suggests that it may actually come down to some sort of negative action against you before or after an accident for you to see the light. No one seems to be getting through.

Guess we should save this thread as evidence.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 05:10 AM  3 years agoPost 22
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

I agree...this is similar to flying an RC aircraft recklessly.

PM  EMAIL  Attn:RR  Quote
11-17-2014 05:17 AM  3 years agoPost 23
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

I'm all about discovery and learning. But can't just do it on AM/FM radios from radio shack or something!?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 05:22 AM  3 years agoPost 24
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

Disagree...I know a lot of old plankers that us their beloved 72 MHz radios...which are still FCC legal.

PM  EMAIL  Attn:RR  Quote
11-17-2014 05:24 AM  3 years agoPost 25
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

nm

You're right. There are better ways to learn.

Why not try to create an ESC or something? Less harm in non-emitting electronics. Of all things, why a transmitter?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 05:34 AM  3 years agoPost 26
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

ESCs emit RF signals...and so do their internal SBECS...but rather than affect RXs and such...it interferes with the MEMS gyros in ones FBL controller.

External SBECs has similar issues.

PM  EMAIL  Attn:RR  Quote
11-17-2014 05:35 AM  3 years agoPost 27
unclejane

rrElite Veteran

santa fe, NM, USA

My Posts: All  Forum  Topic

Agree with the others. I would just leave it alone.

If you do need extra range, there are LRSs available that operate on VHF and give greatly extended range. The ones I looked at, tho, operate in the amateur 70cm band, so an amateur radio license (Technician or higher) would be required to use one. Legally, anyway.

But that'd be better than possibly burning up a perfectly good transmitter

LS

PM  EMAIL  Attn:RR  Quote
11-17-2014 05:36 AM  3 years agoPost 28
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

The key is to quantify these effects by using "hi-tech" test and measurement equipment....to "see" the RF effects.

PM  EMAIL  Attn:RR  Quote
11-17-2014 05:36 AM  3 years agoPost 29
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

ESCs emit RF signals...and so do their internal SBECS...but rather than affect RXs and such...it interferes with the MEMS gyros in ones FBL controller.
External SBECs has similar issues.
Yeah but all that results in loss of own model, not anyone within an XX mile radius.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 05:39 AM  3 years agoPost 30
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

Point well taken...

PM  EMAIL  Attn:RR  Quote
11-17-2014 08:09 AM  3 years agoPost 31
RussJ

rrApprentice

lockport, new york usa

My Posts: All  Forum  Topic

Why mess up a perfectly fine radio and why do you need extra range?, As it is now you can take airplanes and helis completely out of site and not lose any signal.

Russ

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 08:34 AM  3 years agoPost 32
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

Exactly....

PM  EMAIL  Attn:RR  Quote
11-17-2014 11:46 AM  3 years agoPost 33
Heli_Splatter

rrElite Veteran

USA

My Posts: All  Forum  Topic

because he is talking about flying FPV beyond line of sight.

I always encourage people to learn about electronics. The best way is to start doing the simple projects and work your way up to something meaningful. There are probably some hams around with the equipment to check the signal.

They are not going to do anything illegal and risk their license, but they will help with many projects.

KB3VTF

PM  EMAIL  GALLERY  Attn:RR  Quote
11-17-2014 01:20 PM  3 years agoPost 34
icanfly

rrElite Veteran

ontario

My Posts: All  Forum  Topic

no need to run wild with the imagination on this, here's what's up for now, it's an antenna "substitution" is all, same 2.4 same tx, same same except REMOVABLE antenna. Range can be increased with a parabolic reflector, it isn't necessarily range I'm interested in either, not at all really. The new breed of 2.4g tx's have no antenna poker and are sleek and nicely packable. If I were to add another antenna this dx7 tx would certainly not be worth the effort, it would fun to learn something about 2.4 however.

Do you know a immigrant German woman turned Hollywood actress invented the signal hopping method of transmission and also the method of digital computation? Hedi Lamar is her name, patented the things too. Here's to you babe.

"To boldly go where,, no man,, has gone,, before,,,,These are the voyages of the Starship,,,Enterprise,,,,,,lol.

Its said if you want range increase the antenna height. Increasing the length of coaxial wire can cancel those benefits however.

this is what's inside your typical 2.4g antenna ducky,

identical except for the housing and coupling of the rubber ducky one. There's no mod of anything other than housing and removability for transport, compactness. Next to go or be changed is the back handle.

so don't get your diapers in a knot, other 2.4g equipment manufacturers have been utilizing rubber duckies since forever, why not rc tx's?

btw, in the first pic the little antenna clip that goes into the radio board is dangling free and the plug it goes into is located slightly below the bind led and to the right.

It is possible to home build a 2.4g tx from scratch, or at least from parts that already exist, you remember HEATHKIT? wow, that's like going back to before Bill Gates and Steve Jobs.

To give a little background I had a couple of short work stints in electronics manufacturers.

Take a look at this dudes creation, http://diydrones.com/profiles/blogs...-rc-transmitter

Jeti, MC 20, 32, diy'rs, plenty of tx's different than the standard one, two sticks, toggles, lcd screen, programming buttons, antenna.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-18-2014 01:00 AM  3 years agoPost 35
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

Do you know a immigrant German woman turned Hollywood actress invented the signal hopping method of transmission and also the method of digital computation?
Digital computation is rather vague for an invention...

With regards to freq. hopping, hers and Antheils were of a certain specific type of hopping....specifically between 88 freqs. which corresponded to that of a piano...which has 88 keys(freqs.)

What does freq. hopping have to do with RF propagation at 2.4 GHz?
so don't get your diapers in a knot, other 2.4g equipment manufacturers have been utilizing rubber duckies since forever, why not rc tx's?
Forever? Pretty absurd statement to me, especially with regards to 2.4 GHz....
It is possible to home build a 2.4g tx from scratch, or at least from parts that already exist, you remember HEATHKIT?
Heathkit? Yes, didn't realize they were using a digital radio IC.

Are you familiar with digital signal processing software, because you will have to do some extensive software development.

Have fun....

PM  EMAIL  Attn:RR  Quote
11-18-2014 01:04 AM  3 years agoPost 36
Aaron29

rrProfessor

USA

My Posts: All  Forum  Topic

EEngineer you are an incredibly, incredibly patient man. I applaud you.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-18-2014 01:04 AM  3 years agoPost 37
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

PM  EMAIL  Attn:RR  Quote
11-18-2014 01:24 AM  3 years agoPost 38
Retired2011

rrElite Veteran

Lee's Summit, MO

My Posts: All  Forum  Topic

Heathkit, haven't heard that name in a while.

I still use a Heathkit DMM I built about 35 years ago, also have a Heathkit soldering station I built, somewhere around here.

PM  EMAIL  GALLERY  Attn:RR  Quote
11-18-2014 01:30 AM  3 years agoPost 39
EEngineer

rrProfessor

TX

My Posts: All  Forum  Topic

My Kraft system was better....

PM  EMAIL  Attn:RR  Quote
11-18-2014 01:31 AM  3 years agoPost 40
icanfly

rrElite Veteran

ontario

My Posts: All  Forum  Topic

glad you saw the humor here.

forever? since ww2 anyway, lol.

The Heathkit reference was toward all analogue, kids wouldn't know much about back then.

the complex software development is best left to a friend of mine who is a master computer and electronic technician, he likes a challenge. Might take me much longer to sort things out.

Back at the plan. Man, had a dx9 in my hands this aft, don't want to say POS but not as nice as even the dx7 (JR designed). The 9 was boxy, larger, and appeared more plastic than high tech (rings around the gimbals). I have grown accustomed to the 3cell lipo in my 7 as opposed to the 2 cell ones in the 8 and 9. The 8 or 9 would be the ones to gut for a special mock up.

I dunno, don't want to change to the Futaba 10J 'cause then all my helis would have to be Futaba'd with rx's, but the tx design is the way to go with pretty much all aspects.

A u.fl to male sma plug (where the rubber duckie fastens to) was sourced on ebay. Going to see if a local e-parts retailer has one.

Once again, NO change of 2.4, simply a better antenna option for a tx than the fixed poker style one of fm days.

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 9 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 6192 views POST REPLY
HomeAircraftHelicopterMain Discussion › DX7, Ducky, Just Ducky, Wunderful Mods Like "ON" Lamp Newly Installed
 Print TOPIC  Make Suggestion 

 8  Topic Subscribe

Saturday, August 18 - 11:33 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online