72MHz Range

[Stainless Skills]

I was flying out at this huge lake in Rowlett Texas today. It was actually snowing. I was experimenting with a video camera strapped with duck tape under the landing gear of my 30% Yak. It is a big fat ass camera that probably weighs 3 pounds but I really don’t mind because the video that I can watch when I get back on the ground is unbelievable.

I was flying really high today and as far as I could out over the lake with my line of sight but it is very unnerving because you can barely hear the plane with the wind blowing.

I have been told that my JR 9303 radio on channel 47 coupled with my 649 reciever will give me a 2 mile range. I have also been told that it would have a 5 mile range. What is the range on a system like that? Thanks a bunch.

I would love to go really high but do not want to go too high if you know what I mean….

[E-MO]

Post the vid , if you can

[Stainless Skills]

I wish I could but the video camera is not digital. It has a small tape that it records onto.

It had audio and video cables that come out of the camera though.

Any one know how to convert something like that to digital?

[acrorc]

Your RC equipment should work reliably at 2 miles and 5 miles or more is very possible. Beyond a couple of miles, reliable operation will depend on factors such as antenna orientation, ignition noise and strength of any interfering signals.

[ShortBus]

	Quote: Originally Posted by Stainless Skills
	I wish I could but the video camera is not digital. It has a small tape that it records onto. It had audio and video cables that come out of the camera though. Any one know how to convert something like that to digital?

My video camera has the same thing. It also uses a firewire thing to upload to the computer.

[Judge]

Ultimately what does it matter?? At either 2 or 5 miles you would not be able to see the plane well enough to control it. 2 miles = 10,560 feet and 26,400 feet. Even if you could see the plane at these distances it would be irresponsible to fly at these altitudes. (You mentioned going high as opposed to out).

You will have full control to the limits of your eyesight, and that IS important!!

[Stainless Skills]

What I am really getting at is this. http://www.wirelessvideocameras.com/

And I was thinking of making an investment in such a thing.

is there away to calculate by frequency and wattage to determine some sort of power output. What is the power output on a 9303?

I really need to know the range and am determined to find out one way or another.

[Judge]

	Quote: Originally Posted by Stainless Skills
	I really need to know the range and am determined to find out one way or another.

What is the need for a precise range determination??

BTW - AMA Safety Code (if you belong and want to be covred by insurance) and new FAA guidelines require RC model flight ONLY within normal line of sight and prohibit flying out of sight or using autonomous control.

[Judge]

	Quote: Originally Posted by Stainless Skills
	I really need to know the range and am determined to find out one way or another.

What is the need for a precise range determination??

BTW - AMA Safety Code (if you belong and want to be covred by insurance) and new FAA guidelines require RC model flight ONLY within normal line of sight and prohibit flying out of sight or using autonomous control.

BTW - AMA requires a channel sharing plane for sites within 3 miles of each other if that helps getting a guess on ranges.

[Stainless Skills]

I knew this was going to come up and it is very frustrating.

I will fly in my line of sight, way out over some farm land and over lakes here in Texas where practically no one exists.

I would love to figure out where I was going to take off from using that Google earth program and then figure out the mileage radius that I could fly over. It would suck worrying about running out of range and not wanting to test the ice so to speak.

I never said anything about going out of my line of sight or flying autonomously.

Post if you know the answer.

Thanks, John.

[Stainless Skills]

Would PPM or PCM give a greater range?

[Judge]

	Quote: Originally Posted by Stainless Skills
	I never said anything about going out of my line of sight or flying autonomously.

Sorry, just trying to read between the lines. While I still cannot tell you exactly what range you will get, I can absolutely tell you that it is beyond your ability to see it.

Fellows fly cross country gliders (with 12 and 14 foot spans) at altitudes up to 3,500 feet (as verified by altimeters). I can tell you that you can only just barely see the plane.

And PCM or PPM makes no difference to range. If you are worried about going out of range I would suggest PCM se you can at least set a failsafe position for your controls if you do get out of range.

But again, you simply cannot fly the plane out of its range before you cannot see it any longer.

[redneckteddy103]

in line of shight the horizon line is 7 miles , and most 72mhz system are capable of 2 mile range over 2 miles is pushing it . normal flying is about 1/2 mile i have had them as far out as 1 1/2 mile and its just a small dot so to be safe just fly 1 mile out and you can have fun all day long . just rember that all model aircraft have a altitude cap of 1500 feet as set by faa guide lines this is to stay out of the way of full scale aircraft ... most clubs have a cap to 800 to 900 when in citys or by local airports .

[Judge]

	Quote: Originally Posted by redneckteddy103
	just rember that all model aircraft have a altitude cap of 1500 feet as set by faa guide lines this is to stay out of the way of full scale aircraft ... most clubs have a cap to 800 to 900 when in citys or by local airports .

Not sure where you got this. But the FAA uses a number of 400 feet as per their Advisory Circular 91-57. Most clubs within altitude sensitive areas use this as a cap. The AMA safety code also uses 400 feet when within 3 miles of an airport. And I can tell you of at least three places where the FAA has convinced local agencies (city/county) that lease land to clubs to use 400 feet as well as part of the lease.

The only time I have ever seen or heard of 1500 feet was on a couple of occasions where a Certificate of Authorization (COA) was granted by the FAA for a special event (RC event).

Most fields don't have altitude worries, but those that do will likely use the 400 feet of the FAA AC 91-57

Here's a link to see the AC 91-57: http://www.modelaircraft.org/PDF-files/540-C.pdf

[redneckteddy103]

	Quote: Originally Posted by Judge
	Not sure where you got this. But the FAA uses a number of 400 feet as per their Advisory Circular 91-57. Most clubs within altitude sensitive areas use this as a cap. The AMA safety code also uses 400 feet when within 3 miles of an airport. And I can tell you of at least three places where the FAA has convinced local agencies (city/county) that lease land to clubs to use 400 feet as well as part of the lease. The only time I have ever seen or heard of 1500 feet was on a couple of occasions where a Certificate of Authorization (COA) was granted by the FAA for a special event (RC event). Most fields don't have altitude worries, but those that do will likely use the 400 feet of the FAA AC 91-57 Here's a link to see the AC 91-57: http://www.modelaircraft.org/PDF-files/540-C.pdf

frist look at the date on that flyer its been updated since then and pic pics im going to post will show why . 400 feet aint nothing to a p70 at full throdle go 1,2,3,4, and its blown way out of 400 feet