[prefontaine]

Im just wondering if anyone knows if airliners can casues radio interference?

I was flying my decathelon yesterday, teaching a buddy how to fly, he had the tx and was doing good. he was coming out of a turn when he said "I dont think I have control anymore" I grabbed the tx from him and tried to save it but it went in hard, narrowly missing a surgeon that was walking through the field.(JK) there was no control what so ever.

i was using a futaba skysport 6 ch radio on 72mhz

there was a plane flying over, he was pretty high up and to the south of us, he didnt go right over us or anything. do you think that is what caused the lock out??

everything was freshly charged and we did a range check before we took off and everything seemed to be ok, the crash happened about 8 minutes into the flight so we had control up until then. that is why I am wondering if airliners can cause a lock out because I could see the plane off in the distance when the decathelon went in.

the decathelon is a total loss, we found the fuel tank about 30 metres away from the wreck.

Corey

[bbbair]

Full Scale AC use Radios in the VHF(118 - 136MHz) & UHF (300MHz - 3GHz)bands your radio was at 72 MHz - there is plenty of separation here.

My club is located within 10 Km of the Trenton Military Airport, we regularly have overflights of Helicopters, C130 Hercules, F18s and a wide variety of Airliners no problems have ever been attributed to full scale AC.

Keep looking for another reason for your loss. ??:

[VERTOL]

Way back when our TV uses Broadcast Air (no cable service yet), and our house
is along the approach path of an international airport, we get bad TV reception whenever
a big jet approaches and passes by our house. Perhaps there is a beacon which is
transmitted from the plane. FYI Channel 2 - 13 is 54 mHz to 216 mHz and the TV gets
swamped on almost all channels by the passing airplane.

[prefontaine]

what about CB radios?? something caused a lock out, I dont think it was someone turning on a tx on the same channel, could have been though who knows..

it does look cool when your plane flys strait into the ground though, sucks to not have it now. sucks even more to not know why, dumb thumbs happen and then at least its your own fault, i just hate the wondering and the what ifs...

Corey

[ronnieo]

Whew...I've had every problem you can imagine for crashing....from bad gas to bad plugs, but now I can blame it all on those dang planes in the air.....who'da thought!! LOL

[b0r3d]

one reason 2.4ghz hasn't failed me yet no matter what the lockout was. Using crystals always has me worried about someone else

[astrofler]

I don't see any plane doing it. We have airliners as well as other traffic turning almost over our field on their way to the beacon for Halifax. Never a problem with that.

[prefontaine]

we already established that it was not an airliner, if you read the posts above. I didn't know hence why I am asking if an airliner could cause a lock out.

thanks for the replys

[VERTOL]

This is not meant to prolong this topic but it got me curious so I did a little bit of reading,
because from my own personal experience TV interference really happens whenever a big airliner lines up for a landing.

Marker Beacons
The approaching airplanes uses ILS which consists of a series of Marker beacons.
The Marker beacons are transmitted at a carrier frequency of 75 mHz w/ a power of
3 watts and it is a series of tones (morse code). My guess is that they (airport) switch
on the beacons only when an airplane is about to land.

Whatever that means, you can see a Frequency near the 72 mHz although the power
is small..but would that cause lockout for a nearby RC receiver? Maybe, maybe not, but
it sure causes TVI.

FYI

[mikeyg]

Yeah, they took out all the marker beacons years ago. Apparently there are some still in the US, none here in Canada though. (they'd be always on though) The rest of the ILS system is on the ground at the airport, glideslope beside the runway, and localizer at the far end. Some approaches use NDB's as a fix, but they're 200-415KHz. All this stuff is always on.

I'd be more worried if there was problems there for when I'm on the ILS and someone's flying a rc plane nearby screwing up my instruments I trust those dials with my life down to 200 ft all the time.

As for your TV, I couldn't answer that one. Your TV gets frequecies from 54-60MHz and we have nothing in our planes anywhere near that. Maybe the plane's wake turbulence is moving your antenna outside

Hope you find an answer, Cheers!

Mike