WiFi underwater? at DVinfo.net

Markus Nord · January 16th, 2013, 05:10 AM

Hi there UWOL friends!

I'm about to order a GoPro 3 and will use this one as a B cam for a production I'm working on. I've been thinking about the WiFi, have anyone tried it out in water, or know if it can be used thru water? I have no idea if water interfere with WiFi or not... Any ideas?

Cheers!

Jim Michael · January 16th, 2013, 05:40 AM

The search term you need is 'attenuation wifi underwater'. Attenuation is frequency dependent. Looks like your signal wouldn't travel very far.

Markus Nord · January 16th, 2013, 05:59 AM

Thanks Jim, I did some searching and found a few ideas... I'll se what I'll come up with.

Cheers

Giroud Francois · January 16th, 2013, 08:23 AM

2Ghz frequency is very close to the one that is used for Microwave oven.
Knowing that microwave oven is just heating water with high frequencies, you can expect that all your wifi power will be absorbed by water as well.

Rick L. Allen · January 17th, 2013, 01:06 PM

Markus, I specialize in u/w work and wifi thru water won't work. Water absorbs the signal and the power output is too low anyway. That's why ROV's are either tethered or autonomous and submarines surface to radio home or use high powered ULF transmissions through water.

Sareesh Sudhakaran · January 17th, 2013, 11:12 PM

Quote:

Originally Posted by Markus Nord

I'm about to order a GoPro 3 and will use this one as a B cam for a production I'm working on. I've been thinking about the WiFi, have anyone tried it out in water, or know if it can be used thru water? I have no idea if water interfere with WiFi or not... Any ideas?

2.4 GHz Wi-fi does not work under water. Here's confirmation from gopro users: GoPro WiFi Underwater use

Markus Nord · January 18th, 2013, 02:32 AM

Thanks everyone... I got some idea how I should proceed.

Cheers

Jan Siimson · February 16th, 2014, 02:32 AM

Hey,

If its solution for you...

For me it was :)

Mark OConnell · February 16th, 2014, 01:52 PM

Wow that's a great idea!

Markus Nord · February 17th, 2014, 09:05 AM

I ordered a WiFi coaxial cable, it shold be here later this week. I'll gonna try it next weekend, will do it with a 10 m cable first and se if the signal is strong enough.

Thanks for the tip.
/Markus

Woody Sanford · February 18th, 2014, 01:38 AM

I use the Sony action cam myself and can get some wifi to about a foot deep beside my kayak filming fish as I net them. However, there is a big difference between a phone and a tablet. From what I've noticed the much better antenna systems in the tablets will do a lot better, in most cases doubling the distance you can get with a phone.

I haven't tried the coax trick but sure results will vary with phones because of the antenna systems. I'd try a tablet if it seems to come up short.

Mark Rosenzweig · July 18th, 2014, 07:44 AM

You can use this:

Panasonic HX-A500H - Panasonic A500: Point-of-View Wearable 4K Camcorder ? Gray

No need for wifi (although it has it). Direct cable connection of lens to viewer/camera.

January 16th, 2013, 05:10 AM	#1
Markus Nord Major Player Join Date: May 2007 Location: Vastervik ,Sweden Posts: 639	WiFi underwater? Hi there UWOL friends! I'm about to order a GoPro 3 and will use this one as a B cam for a production I'm working on. I've been thinking about the WiFi, have anyone tried it out in water, or know if it can be used thru water? I have no idea if water interfere with WiFi or not... Any ideas? Cheers! __________________ www.nordproduktion.se https://vimeo.com/nordproduktion

January 16th, 2013, 05:40 AM	#2
Jim Michael Major Player Join Date: Dec 2005 Posts: 895	Re: WiFi underwater? The search term you need is 'attenuation wifi underwater'. Attenuation is frequency dependent. Looks like your signal wouldn't travel very far.

January 16th, 2013, 05:59 AM	#3
Markus Nord Major Player Join Date: May 2007 Location: Vastervik ,Sweden Posts: 639	Re: WiFi underwater? Thanks Jim, I did some searching and found a few ideas... I'll se what I'll come up with. Cheers __________________ www.nordproduktion.se https://vimeo.com/nordproduktion

January 16th, 2013, 08:23 AM	#4
Giroud Francois Inner Circle Join Date: Feb 2004 Location: switzerland Posts: 2,133	Re: WiFi underwater? 2Ghz frequency is very close to the one that is used for Microwave oven. Knowing that microwave oven is just heating water with high frequencies, you can expect that all your wifi power will be absorbed by water as well.

January 17th, 2013, 01:06 PM	#5
Rick L. Allen Major Player Join Date: Dec 2007 Location: Fayetteville, NC Posts: 536	Re: WiFi underwater? Markus, I specialize in u/w work and wifi thru water won't work. Water absorbs the signal and the power output is too low anyway. That's why ROV's are either tethered or autonomous and submarines surface to radio home or use high powered ULF transmissions through water. __________________ "The good thing about science is that it's true whether you believe it or not." Neil deGrasse Tyson https://www.nautilusproductions.com/

January 18th, 2013, 02:32 AM	#7
Markus Nord Major Player Join Date: May 2007 Location: Vastervik ,Sweden Posts: 639	Re: WiFi underwater? Thanks everyone... I got some idea how I should proceed. Cheers __________________ www.nordproduktion.se https://vimeo.com/nordproduktion

February 16th, 2014, 02:32 AM	#8
Jan Siimson Tourist Join Date: Mar 2010 Location: Tartu, Estonia Posts: 1	Re: WiFi underwater? Hey, If its solution for you... How to make your GoPro WiFi working underwater - YouTube For me it was :)

February 16th, 2014, 01:52 PM	#9
Mark OConnell Major Player Join Date: Feb 2007 Location: Seattle WA Posts: 420	Re: WiFi underwater? Wow that's a great idea! __________________ http://www.markoconnell.org

February 17th, 2014, 09:05 AM	#10
Markus Nord Major Player Join Date: May 2007 Location: Vastervik ,Sweden Posts: 639	Re: WiFi underwater? I ordered a WiFi coaxial cable, it shold be here later this week. I'll gonna try it next weekend, will do it with a 10 m cable first and se if the signal is strong enough. Thanks for the tip. /Markus __________________ www.nordproduktion.se https://vimeo.com/nordproduktion

February 18th, 2014, 01:38 AM	#11
Woody Sanford Regular Crew Join Date: Dec 2006 Location: Princeton, NC Posts: 161	Re: WiFi underwater? I use the Sony action cam myself and can get some wifi to about a foot deep beside my kayak filming fish as I net them. However, there is a big difference between a phone and a tablet. From what I've noticed the much better antenna systems in the tablets will do a lot better, in most cases doubling the distance you can get with a phone. I haven't tried the coax trick but sure results will vary with phones because of the antenna systems. I'd try a tablet if it seems to come up short.

July 18th, 2014, 07:44 AM	#12
Mark Rosenzweig Trustee Join Date: Mar 2011 Location: New Haven, CT Posts: 1,004	Re: WiFi underwater? You can use this: Panasonic HX-A500H - Panasonic A500: Point-of-View Wearable 4K Camcorder ? Gray No need for wifi (although it has it). Direct cable connection of lens to viewer/camera.