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HelicopterMain Discussion › flying near Cell towers???
06-04-2012 07:29 PM  5 years agoPost 1
concept1

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Youngstown, OH

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I haven't flown for about a year and finally have some spare time to get back into it and I have lots of room at my new Shop to fly but their is a Cell tower right in my parking lot which scares me. has anyone had any experience flying close to Cell towers? I am talking right at the base or 100-500 feet away. I flew my Blade MCX inside my shop with no issues but I am afraid to go outside with my 250 untill I get some insight! I am using the DX7 which is the DSM2.

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06-04-2012 09:03 PM  5 years agoPost 2
JOLT

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Baltimore, MD

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Careful, my flying buddy just screwed two helis into the ground right next to a cell tower......and with a very reliable Futaba 8FG radio system.

It wasn't dumb thumbs. Both helis glitched and went out of control at low altitude.

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06-04-2012 09:25 PM  5 years agoPost 3
RyanW

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Edmond, Oklahoma

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I am by no means an RF engineer, but there are many systems on the towers that transmit and receive on 2.4GHz. The systems operate at MUCH higher power than our systems. Even with collision avoidance and encrypted data, with such a large power differential the possibility does exist to over power the link to your model if the filter on one of these powered antennas is out of adjustment, etc.

Keep in mind, they mostly operate line of sight to the paired rx/tx on another building or tower. If you keep out of their "aim point", I would assume you would be alright. As I said, I am not an expert, so this is just my take on it.

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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06-04-2012 09:30 PM  5 years agoPost 4
concept1

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Youngstown, OH

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so possibly if I stay behind my shop, which is a 12sq foot building almost 2 stories high I could be fine even though the tower is right beside the building?? with my 250 staying below the building would be ok but if I get away from the building the heli would be in direct line of sight of the tower. I guess this may not work!!!

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06-05-2012 01:53 AM  5 years agoPost 5
FloridaHeli

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jacksonville, florida

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I have flown a Trex 600e up and down a cell tower using JR 11x on 2.4 with JR 7 channel Rx and had NO problems whatsoever. Did this several times with a FB and FBL heli for a company that needed some data. No glitches, brownouts or any other problem. The FBL heli had a Microbeast on board.

This hobby is WAY too expensive!!

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06-05-2012 04:40 AM  5 years agoPost 6
Gregor99

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Western Wa

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There is a cell tower in the lot behind me. There's another one in the lot across the street from me. I have been flying numerous helis from an mCPX to a 600 over thousands of flights and no glitches, errors, or odd behavior since I started in 2007. The radio is a DX7.

I will say that its possible I'm not seeing issues since I am close to the base of the towers. The antennas are very directional and the signal may not be strong on the ground near the towers.

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06-05-2012 12:09 PM  5 years agoPost 7
concept1

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Youngstown, OH

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thanks for the info. that is what I Was looking for! I will probably give it a shot.

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06-05-2012 01:24 PM  5 years agoPost 8
DarkSide41

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Sylacauga Alabama USA

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I've flown several times close to a cell tower that borders my daughters property with no issues with my spektrum setup. I have video from my foamie plank hovering just over the top of it

" The biggest threat to our freedom is not from foreign terrorist , but domestic morons"

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06-05-2012 02:24 PM  5 years agoPost 9
Havoc

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Ky.

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I've never had an issue with a cell tower. I did witness high fade counts flying next to a directional WiFi antenna. No frame losses or holds. Although no problems at all when flying next to the omnidirectional tower it was pointed at. It's never a bad idea to have the Spektrum Data Logger so you can see what the RX is seeing. It doesn't need to be on the heli, just plug it in before you turn it off.

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06-05-2012 03:13 PM  5 years agoPost 10
spiderco

rrVeteran

Henderson, Nevada

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I've flown right next to one and lost all control to the helicopter with an older spectrum radio. Have not tried it with my 11X though. I don't think its worth testing, I just fly elsewhere.

fly til its dry

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06-05-2012 04:48 PM  5 years agoPost 11
SuperSixTwo

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Virginia City, NV ---USA

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Cell towers do not operate in the 2.4 band.
The risk is having so much radio frequency that your signal is lost in the "soup." Think of a head light in the fog.
The risk of you having issues with a single tower? Slight. I would fly it.

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06-05-2012 05:36 PM  5 years agoPost 12
RyanW

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Edmond, Oklahoma

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Cell towers do not operate in the 2.4 band.
Negative. They have frequencies from 2.4GHz up to and beyond 38GHz.

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

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06-05-2012 05:43 PM  5 years agoPost 13
ThumbBumper

rrVeteran

A little to the right and down!

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Yup, fundamental overload or intermodulation products can overload your receiver. If it does, plan on "lights out" for your heli.

Proceed with caution!

Bob

If it ain't broke, go fly some more!
http://facebook.com/groups/TORCHS/

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06-05-2012 06:13 PM  5 years agoPost 14
SuperSixTwo

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Virginia City, NV ---USA

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Negative. They have frequencies from 2.4GHz up to and beyond 38GHz
Only for backhauls, and transferes. Highly directional, microwave stuff. Usually all mounted above the cell radios. I personally have not seen any 2.4 stuff on a tower around here. I havn't seen any rf on the ground from them ever. Unless your flying right in front of them, i don't count it.
The 700-800-900 stuff is where i would put the money on interference.

This is going to be one of those debates, "I've flown and i'm ok." with the other side, "i crashed because of it.."
If your nervous, don't do it.

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06-05-2012 06:18 PM  5 years agoPost 15
rilopez825

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Pembroke Pines, FL

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I fly in an open field near my house which has a cell tower on it. No interference at all.
Flown both
Spektrum DSMX and DSM2 and old 72hz as well back in the day.

Richard

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06-06-2012 02:28 AM  5 years agoPost 16
ThumbBumper

rrVeteran

A little to the right and down!

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FYI, 3rd harmonic of 800Mhz is 2.4Ghz

If it ain't broke, go fly some more!
http://facebook.com/groups/TORCHS/

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HelicopterMain Discussion › flying near Cell towers???
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