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January 16th, 2013, 05:10 AM | #1 |
Major Player
Join Date: May 2007
Location: Vastervik ,Sweden
Posts: 639
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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! |
January 16th, 2013, 05:40 AM | #2 |
Major Player
Join Date: Dec 2005
Posts: 895
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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.
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January 16th, 2013, 05:59 AM | #3 |
Major Player
Join Date: May 2007
Location: Vastervik ,Sweden
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Re: WiFi underwater?
Thanks Jim, I did some searching and found a few ideas... I'll se what I'll come up with.
Cheers |
January 16th, 2013, 08:23 AM | #4 |
Inner Circle
Join Date: Feb 2004
Location: switzerland
Posts: 2,133
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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 |
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Location: Fayetteville, NC
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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.
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January 17th, 2013, 11:12 PM | #6 | |
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Location: Mumbai, India
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Re: WiFi underwater?
Quote:
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January 18th, 2013, 02:32 AM | #7 |
Major Player
Join Date: May 2007
Location: Vastervik ,Sweden
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Re: WiFi underwater?
Thanks everyone... I got some idea how I should proceed.
Cheers |
February 16th, 2014, 02:32 AM | #8 |
Tourist
Join Date: Mar 2010
Location: Tartu, Estonia
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Re: WiFi underwater?
Hey,
If its solution for you... For me it was :) |
February 16th, 2014, 01:52 PM | #9 |
Major Player
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Location: Seattle WA
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Re: WiFi underwater?
Wow that's a great idea!
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February 17th, 2014, 09:05 AM | #10 |
Major Player
Join Date: May 2007
Location: Vastervik ,Sweden
Posts: 639
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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 |
February 18th, 2014, 01:38 AM | #11 |
Regular Crew
Join Date: Dec 2006
Location: Princeton, NC
Posts: 161
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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 |
Trustee
Join Date: Mar 2011
Location: New Haven, CT
Posts: 1,004
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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. |
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