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2.4 ghz signal operating distance?

Old 12-15-2007, 03:20 AM
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bako
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Default 2.4 ghz signal operating distance?

Hello. do you know how far can modern radios operate? I think 2.4 ghz are best, but how far can I controll model? I have one project and wanna know this first.
Old 12-15-2007, 06:21 AM
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alan0899
 
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Default RE: 2.4 ghz signal operating distance?

G'day Bako,
Just about all modern radios, 2.4 Ghz included, will be able to control you project at a distance much further than you can see it, & be able to control it.
Old 12-15-2007, 06:48 AM
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bako
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Default RE: 2.4 ghz signal operating distance?

yes, I know this, but the plane will be 5m wingspan and it will be training drone. can someone tell some figures from the manuals?
Old 12-15-2007, 07:04 AM
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alan0899
 
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Default RE: 2.4 ghz signal operating distance?

G'day Bako,
There are no figures from the manuals, you will have over a mile range, that's a very long way, even for a 5mtr wing span plane.
Old 12-15-2007, 07:50 AM
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airbusdrvr
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Default RE: 2.4 ghz signal operating distance?

In the last several weeks a similar question was asked. One of the responders linked to another RCU thread where a 2.4 sytems(I think Fustaba Fasst) was being used in a government contract UAV program. The range was phenomenal. Far beyond "visual" flight control distance as I recall. Maybe someone else will see this and will post the proper link to that thread.
Old 12-15-2007, 10:52 AM
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bruce88123
 
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Default RE: 2.4 ghz signal operating distance?

There is a new UAV/Drone forum http://www.rcuniverse.com/forum/forumid_486/tt.htm where issues like this can also be addressed.
Old 12-15-2007, 12:07 PM
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tande
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Default RE: 2.4 ghz signal operating distance?

2.4GHz Spread Spectrum Air Product Comparison Guide
Product Feature / Description Spektrum DSM Spektrum DSM2 Futaba FASST XPS XtremeLink™
Radio Speed (effective throughput) 31.25Kbps 128Kbps ???? 256Kbps
Frequency Hopping No No Yes YES(1)
Specified range ~1000 feet "line of sight" "line of sight" Up to 5 miles
From "XPS" web/site
Old 12-15-2007, 12:07 PM
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Wlouigene
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Default RE: 2.4 ghz signal operating distance?

Why do you want to control a big plane like this so far away from you, what do you have in mind?
Old 12-15-2007, 05:19 PM
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goliathman
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Default RE: 2.4 ghz signal operating distance?


ORIGINAL: Wlouigene

Why do you want to control a big plane like this so far away from you, what do you have in mind?
I think He wants to be at a safe distance when it explodes.
Old 12-15-2007, 07:23 PM
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onewasp
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Default RE: 2.4 ghz signal operating distance?

ORIGINAL: goliathman


ORIGINAL: Wlouigene

Why do you want to control a big plane like this so far away from you, what do you have in mind?
I think He wants to be at a safe distance when it explodes.
Today, ---that could easily BE the reason.
Operating beyond unaided visual range is prohibited.
I believe the prohibition is both AMA and the Federal Govt. Guess which one is primary?
Old 12-15-2007, 11:39 PM
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ira d
 
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Default RE: 2.4 ghz signal operating distance?

The AMA says in their safety code not to put a device in a model that will let you
operate beyond visual range, however I have not seen a FAA ban on the same.
Old 12-16-2007, 04:01 AM
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bako
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Default RE: 2.4 ghz signal operating distance?

Ineed about 3km signal operating range. I will for sure let u know what am I panning. just wanna know can this 2.4ghz for example futaba7C radio operate on such sitance?
Old 12-16-2007, 12:19 PM
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Flying Geezer
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Default RE: 2.4 ghz signal operating distance?

Wasn't it Georgian muslim terrorist that gassed 700 innocent civilians in a russian theatre?
Old 12-16-2007, 02:35 PM
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onewasp
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Default RE: 2.4 ghz signal operating distance?

ORIGINAL: ira d

The AMA says in their safety code not to put a device in a model that will let you
operate beyond visual range, however I have not seen a FAA ban on the same.
FCC

then FAA

Since 9/11-----you've GOT to be kidding.
Old 12-16-2007, 07:30 PM
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ira d
 
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Default RE: 2.4 ghz signal operating distance?


ORIGINAL: onewasp

ORIGINAL: ira d

The AMA says in their safety code not to put a device in a model that will let you
operate beyond visual range, however I have not seen a FAA ban on the same.
FCC

then FAA

Since 9/11-----you've GOT to be kidding.

I would guess there is no reason for the FAA to ban such systems such since there
are legitimate reasons to have them. Also banning them would not stop someone
with somthing criminal in mind from useing them anyway.
Old 12-16-2007, 10:53 PM
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bruce88123
 
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Default RE: 2.4 ghz signal operating distance?

One of the principal rules of flying anything in U.S. airspace is that you must see and be seen by other flying objects. This is so you can avoid hitting them or being hit by them. If you place a drone in the air and lose sight of it you can not fullfill this REQUIREMENT. To fly such a vehicle you must fly in closed airspace with appropriate permission from the controlling agency of that airspace.

To do otherwise would be negligent and could lead you to severe consequences. Have a good lawyer and even better (although useless because they won't pay) insurance.
Old 12-16-2007, 11:33 PM
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ira d
 
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Default RE: 2.4 ghz signal operating distance?


ORIGINAL: bruce88123

One of the principal rules of flying anything in U.S. airspace is that you must see and be seen by other flying objects. This is so you can avoid hitting them or being hit by them. If you place a drone in the air and lose sight of it you can not fullfill this REQUIREMENT. To fly such a vehicle you must fly in closed airspace with appropriate permission from the controlling agency of that airspace.

To do otherwise would be negligent and could lead you to severe consequences. Have a good lawyer and even better (although useless because they won't pay) insurance.
It sounds like you are right, but the point I was making is that there is not a total ban
on auto pilot type operation by the FAA of course there are procedures that must be
followed and is not something the avarage modeler would undertake.
Old 12-17-2007, 03:58 AM
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bako
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Default RE: 2.4 ghz signal operating distance?

I live in republic of georgia, so I don't have no AMA, no FAA and no FAI here. I hjsut want radio to be able to controll 4-5 meter airplane on 3km distance
Old 12-17-2007, 05:48 AM
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PLANE JIM
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Default RE: 2.4 ghz signal operating distance?

We are flying 100 inch glow gliders with telemetry measurements of over 8000ft msl-flying standard 2.4 Spectrum and we are near sea level
Old 12-17-2007, 11:37 AM
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onewasp
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Default RE: 2.4 ghz signal operating distance?


ORIGINAL: ira d


ORIGINAL: onewasp

ORIGINAL: ira d

The AMA says in their safety code not to put a device in a model that will let you
operate beyond visual range, however I have not seen a FAA ban on the same.
FCC

then FAA

Since 9/11-----you've GOT to be kidding.

I would guess there is no reason for the FAA to ban such systems such since there
are legitimate reasons to have them. Also banning them would not stop someone
with somthing criminal in mind from useing them anyway.

Ban???? I never mentioned "ban" . Nor am I aware of one within the FCC approved radio classes.

We simply are not communicating as I am referring to use only.
Your automobile is easily capable of exceeding speed limits--------until you do there is no problem. Same here, the problem area arises through use not via capability.
Old 12-17-2007, 12:00 PM
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bako
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Default RE: 2.4 ghz signal operating distance?

8k feet is good distance if you operate gliders and have no glitches on such a high range, it menas, that the signal goes much longer that's good info for me
Old 12-17-2007, 01:48 PM
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bruce88123
 
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Default RE: 2.4 ghz signal operating distance?

Just remember that 2.4 GHz is a line-of-sight frequency. If you can't see it because of buildings, trees or hills then neither can the TX.
Old 12-18-2007, 03:03 AM
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bako
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Default RE: 2.4 ghz signal operating distance?

yes, I know this. thank yopu people for help
Old 12-22-2007, 01:59 AM
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robprime
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Default RE: 2.4 ghz signal operating distance?

?
Old 12-23-2007, 02:41 PM
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Default RE: 2.4 ghz signal operating distance?


ORIGINAL: bruce88123

Just remember that 2.4 GHz is a line-of-sight frequency. If you can't see it because of buildings, trees or hills then neither can the TX.
All radio waves are LOS.

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