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HomeAircraftHelicopterHelicopter Main Discussion › Mobile Phones at the Flying Field
04-04-2009 09:52 PM  9 years agoPost 1
KittyHawk1

rrNovice

England, Nottinghamshire

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The flying club I use has a member that wont let the issue drop regarding mobile phones in use to the close proximity to a programmable transmitter.

I would like to know: How many of you if you followed our club rules have an issue with them or have experienced any issues by following similar rules?

Our rules state: Mobile phones must be switched off if taken beyond the steel doors to the shed (the steel doors are before the pits area and 30mtrs from the flight line).

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04-04-2009 09:59 PM  9 years agoPost 2
Saint728

rrProfessor

Honolulu, Hawaii

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I don't believe it is true, but I have had a couple of times I couldn't get my 2.4GHz receiver to bind when I had my cell phone in my pocket. After I turned off my phone it bound perfectly. I'm not sure if this was a coincidence or not but it worked. It doesn't happen all the time when I am binding my receiver just every now and then and it only happened while I was in my store front. The area was 80 square meters.

Take Care,
Cheers, Patrick

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04-04-2009 10:02 PM  9 years agoPost 3
dkshema

rrMaster

Cedar Rapids, IA

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Programmable transmitter? Is this a Frequency Synthesized 72 MHz radio you're talking about, where you can select the channel you wish to fly on simply by setting a couple of switches on the TX module, or select through the TX setup menu?

A few years ago, there were a couple threads here on RR that indicated certain Futaba synthesized transmitters would go nuts if they were being used while the pilot's cell-phone rang.

I'm not sure the cause and effect analysis was ever done, or if these occurrences were simply anecdotal evidence from a few flyers.

In general, I'd say the club's rules are arbitrary, a bit on the paranoid side, and unwarranted unless there is good, solid evidence of a causal relationship between the two.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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04-04-2009 10:06 PM  9 years agoPost 4
USNAviationjay

rrElite Veteran

Houston Tx USA

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its bullcrap totally different ends of the spectrum.
there is a HUGE cell tower within 1/2 mile of our club and we have no issues with 72 or 2.4 and cell phones.

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04-04-2009 10:06 PM  9 years agoPost 5
Dood

rrProfessor

Wescanson

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780 pilots and their wives & girlfriends and whoever else is just there spectating.

How many of them do you think had cell phones?

  ▲
▲ ▲

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04-04-2009 10:08 PM  9 years agoPost 6
BarracudaHockey

rrMaster

Jacksonville FL

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780 pilots actually.

Andy
AMA 77227
http://www.jaxrc.com

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04-04-2009 10:25 PM  9 years agoPost 7
KittyHawk1

rrNovice

England, Nottinghamshire

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Here in the UK we mainly fly on 35MHz although there is an ever-increasing shift towards 2.4GHz.
I go to a large amount of flying shows throughout the summer here, I see lots of people with phones near to the flight line, so to me it’s clear the risk here is very limited. I have tried to list all the examples of shows I attend but he still won’t accept it. I am just trying to ensure I’m not the one here with a narrow point of view.

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04-04-2009 10:26 PM  9 years agoPost 8
RobMcQuillen

rrKey Veteran

Rochester, NY

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my cell phone is in my pocket when i fly and i have never had a problem with it.

Rob McQuillen

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04-04-2009 11:45 PM  9 years agoPost 9
bopshi

rrApprentice

greenport ny

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cell phones at field
if they were a problem my helis would be history. We have the towns water supply tank with many cell antenna on it within 100 ft , no problems.

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04-04-2009 11:53 PM  9 years agoPost 10
pH7

rrKey Veteran

Sterling Heights, MI - USA

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Please note that the original poster is from the UK and that all responders were from the US and Yes, it does make a difference.
KittyHawk1 said:
Here in the UK we mainly fly on 35MHz although there is an ever-increasing shift towards 2.4GHz.
Since we do not use 35MHz here in the states and our cell phones here use a different frequency than in the UK, none of us really know about this and our opinions don't really do KittyHawk1 much good. It really isn't a problem here, but that does not matter.

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04-05-2009 12:11 AM  9 years agoPost 11
Saint728

rrProfessor

Honolulu, Hawaii

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Well its the same thing in Australia. We use 36MHz which is pretty close to 35MHz, in fact you can use a 36MHz crystal in a 35MHz receiver and it will work and same the other way around. Still don't think there was ever a problem with cell phones and transmitters/receivers?

Take Care,
Cheers, Patrick

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04-05-2009 01:04 AM  9 years agoPost 12
pete haywood

rrNovice

Hobart, Tasmania, Australia

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I use 36 mhz frequency and once a few years back, when I was fly my trex 450 off the balcony at my house, I got bad glitching / interference ( the heli twitched violently ) for a second or three exactly when a mate standing next to me received / answered a call on his mobile phone. At that stage I'd been flying with my mobile on and in my pocket with no problems for years, but had never had an incoming call - not that I could / would answer it for obvious reason. From then on I always switch off my mobile just to be safe. I haven't heard of anyone else ever having problems where I live with either system but better to be safe than sorry. Especially when flying the gasser
A mate who uses the 2.4 ghz system had problems getting his receiver to bind once out in his workshop when both him and I had our mobiles on. We didn't think much of it at the time. Maybe it was the phones?

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04-05-2009 01:20 AM  9 years agoPost 13
Raptor Pilot

rrVeteran

Northern Ireland U.K

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my cell phone is in my pocket when i fly and i have never had a problem with it.
I used to think this too untill one day i forgot i had my mobile in my coat pocket. My raptor started to jump about about 2 seconds before my mobile started to ring in my pocket. I couldnt get the phone out of my pocket before the heli crashed. I was useing a P.C.M 149 DP receiver which should have gone into fail safe if it had been getting interferance but it was getting a corrupted signal from the transmitter instead. By corrupted i mean that the signal was getting to the receiver but in the wrong order it was supposed to be in. The transmitter was a FF9 C super with a synthised transmitter module on 35 MHZ.
I couldnt beleive what had happned so that night on the bench i was able to reproduce the problem on any model in my workshop that was being controled with the synthised transmitter module by having the phone in my pocket and the transmitter in my hands and getting my mate to ring me from the landline in the house. Plug in a module that has a crystal in it into the same transmitter and try as i might i couldnt reproduce the problem.
Theres my 2 pee's worth.
Anyway, can anybody hold a phone to their ear and talk while they are flying with both hands on the transmitter sticks unless they have three hands?

If it doesnt move and its meant too... use WD 40. If it moves and its not meant too...use duct tape!

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04-05-2009 01:26 AM  9 years agoPost 14
Flying Brian

rrElite Veteran

St. Clairsville, Ohio

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I havent read strickly through this thread, but dosent Cell phone throw out all kinds of static electricity, and isint this bad for any radio, including the 2.4 radios?

"I just don't Listen" "

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04-05-2009 02:04 AM  9 years agoPost 15
january flyer

rrApprentice

Lake Charles Louisiana 70601

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I've talked on my cell many times when I was flying my heli. With the use of a headset, and I'm still flying on 72 with a JR XP9303. Take care!

Team JR, Thunder Tiger America, Scorpion, Skookum Robotics, Savox, RC Aerodyne, Sirocco, SpinBlades

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04-05-2009 02:31 AM  9 years agoPost 16
predatorman

rrVeteran

Falkland Islands

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Might it be down to transmitting power? isnt some of the US gear quite powerful? The 2.4 ghz radios pump out more power then the UK spec ones for example....so I am led to believe.

Might the same go for some mobiles? I cant pretend to know anything about the issue...its all magic to me

Quality takes........time!

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04-05-2009 03:02 AM  9 years agoPost 17
TMoore

rrMaster

Cookeville, TN

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I've had a Nextel phone on one hip and a Verizon phone on the other hip with a bluetooth headset flying Airtronics 2.4/Airtronics PCM on 72Mh and if the cellphone bothers the radio, you need another vendor for your radio gear.

TM

Delayed Response Operator Not Engaged
AMA SECTION 336 = Good
Drones = EVIL

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04-05-2009 04:37 AM  9 years agoPost 18
Flying Brian

rrElite Veteran

St. Clairsville, Ohio

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I've had a Nextel phone on one hip and a Verizon phone on the other hip with a bluetooth headset flying Airtronics 2.4/Airtronics PCM on 72Mh and if the cellphone bothers the radio, you need another vendor for your radio gear.

TM
`

Now that is a truly, walking the walk, and talking the talk!!

"I just don't Listen" "

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04-05-2009 08:22 AM  9 years agoPost 19
KittyHawk1

rrNovice

England, Nottinghamshire

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I think we have answered the problem of the phone being switched on when in close proximity for example in your pocket. If the phone was 30mtrs away then my feeling is this would not cause you a problem, would it?

The other issue here is the signal from your mobile phone to the transmitter, according to the British Model Flying Association this may wipe the memory in your transmitter! This would occur no matter what frequency you are on. Again if you are within 10ft of your transmitter with your phone on, has anyone had issues with this beyond 10ft?

Again I feel if you are outside this 10ft radius I don’t think there would be a problem.
I want to hear of your experiences to gauge if this is wrong. So I present my findings to this other club member.

Thanks for all of your responses so far.

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04-05-2009 08:39 AM  9 years agoPost 20
robwil

rrNovice

melbourne australia

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There have been issues with the phones wiping model memories. I havent seen this but the president of our club personally has and i have heard of a few others that this has happened to

jr venture 30
Raptor 50se
Trex450se
Trex450s
JR Vibe 90 with all the fruit

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HomeAircraftHelicopterHelicopter Main Discussion › Mobile Phones at the Flying Field
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