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« on: July 16, 2014, 08:56:33 PM »
mpnchar
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Hi All,

Just want to check if anyone has been experiencing signal interference from cell phone towers.   Last time when I was in Hyd, I was hovering my quad on the terrace and seem to have many signal problems due to nearby (intact same building) mobile phone towers.. Specifically I was using Spektrum & JR DSM Tx & Rx. 

Please do share your feedback..
Thanks in advance..

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« Reply #1 on: July 16, 2014, 09:02:33 PM »
dhruvafreak
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RC Heli pilots do it INVERTED



One of my friend had same issue with mobile towers . Once the plane is above the tower , It would just fly away . He was using dx6i . Even Lance sir (member here) crashed his planes many times due to mobile towers .
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« Reply #2 on: July 16, 2014, 09:10:15 PM »
divay99
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We have had a similar issue with a guy on our field he was using a JR
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Divay Puri
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« Reply #3 on: July 16, 2014, 09:14:00 PM »
dhruvafreak
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But a DSM right , sir ?
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« Reply #4 on: July 16, 2014, 09:25:20 PM »
divay99
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correct
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« Reply #5 on: July 16, 2014, 09:30:41 PM »
Shannon
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its not about which brand ...but which frequency band ur using ...earlier cell phones used to work only on  600-800 -1200 mhz GSM CDMA but now its 1600 1800 2200 ish close to what we use 2400 mhz or 2.4 GHZ which is microwave and cause of this tx transmission n rx is affected ....u wont have any issue using 72mhz or 34mhz if u wanna go that route ...stay away from cell phone towers if ur using 2.4 ghz
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« Reply #6 on: July 16, 2014, 09:37:05 PM »
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Yeah exactly but still never felt that coming from a DMSS tech yet !
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« Reply #7 on: July 16, 2014, 09:43:39 PM »
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do u know if i place a dish faced towards u n fire an electromagnetic wave at 8.8.to 9.4 ghz i can sterilize u  Giggle Giggle Giggle Giggle equipment in airliners can do that ...the weather radar to be specific  ...thats y they are never turned on .on ground ...so that u can fullfill the saying  'hum do hamare do '..... Giggle Giggle of so jokes apart if thats possible then radio interference at 2.4 ghz is also possible
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« Reply #8 on: July 16, 2014, 09:49:50 PM »
dhruvafreak
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Hahahah !!! Yeah Right :p
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« Reply #9 on: July 16, 2014, 10:28:44 PM »
ashok baijal
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Spectrum 2.4ghz radios have issues! Pl see http://www.rcgroups.com/forums/showthread.php?t=1962793
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« Reply #10 on: July 17, 2014, 11:06:31 AM »
girishsarwal
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Not just Spektrum, all 2.4G radios are prone to interference from cellphone and especially WiMax LOS towers. The Wimax's have a very narrow lobe, but it's a chakravyuh, entering is easy, exit is not. We've lost three crafts on our field due to these... The transmission power from these towers is way beyond of our Tx's so they takeover easily. Typical behaviors are controls stop responding and craft starts looping/rolling on its own...

PS: We also had an incident with a fourth plane, but very luckily the easystar turned back 180 and flew out of the LOS, returning to safe zone
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« Reply #11 on: July 17, 2014, 02:39:20 PM »
jaspreet.guitar
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Faced same problem with FrSky Taranis and Sanwa SD-6G. Now, I always make sure to check for mobile towers before flying.  Wink
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« Reply #12 on: July 17, 2014, 03:07:41 PM »
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hi girish

on an unrelated tangent ... do any service providers have wimax apart from bsnl ?

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« Reply #13 on: July 17, 2014, 03:50:04 PM »
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I ain't sure but I think WiMax its only BSNL...Sandeep who flies with us is the expert in this area... in fact we were clueless till he got his arsenal of debugging tools to the field...
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« Reply #14 on: July 17, 2014, 10:53:20 PM »
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I ain't sure but I think WiMax its only BSNL...Sandeep who flies with us is the expert in this area... in fact we were clueless till he got his arsenal of debugging tools to the field...

Huh?
Stuff like this, if you explain on the RC Boltz thread, may benefit ordinary guys like me (just think, we were only using FIRE to debug our field)
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« Reply #15 on: July 18, 2014, 12:32:18 PM »
girishsarwal
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Hahaha... I'll leave sandeeppande to do the explaining on how we were bugged and how he debugged on the boltz thread.
Fire??? I thought aircraft disinfection crop dusting aerial application was an option  Thumbs Up

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« Reply #16 on: July 19, 2014, 07:49:26 AM »
avesh
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Got my heli crashed, no control over my model at range of 100mts. Landed inverted over a terrace. And yes mobile tower was next to it. I am never ever going to fly there again. RIP my 450.
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« Reply #17 on: July 19, 2014, 10:06:47 AM »
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Huh?
(just think, we were only using FIRE to debug our field)


 Giggle Giggle  Hats Off Iyer Sir.
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« Reply #18 on: July 19, 2014, 10:11:10 AM »
dhruvafreak
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Avesh you are on dsm ?? You were on avionic na
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Agile 7.2                 (Kde 12s | Yge | Kds Hv | Sk540)
Goblin 700 Carbon  (Kde 12s | Yge | Rjx | Sk540)
Goblin 500 Sports   (Quantum 6s | HW | KST | Sk540)
Gaui X3                   (Scorpion 6s | Castle Bec | Yep | Tgy306hv | SK540)
Multiplex Funjet | Dynam Su26M | Arising Star

--------------  Married With Helicopters!  ----------

For Rc Action Subscribe :
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