2.4 underwater - RC Groups
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Feb 07, 2010, 11:43 PM
NOT YOU!!
Discussion

2.4 underwater


is 2.4 underwater better than 72?
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Feb 08, 2010, 08:39 AM
Semi-Official Tinkerer
Subdave's Avatar
Short answer, No
2.4 will not work under water, and 72 is for aircraft. 75MHZ is the one. Dave.
Feb 08, 2010, 08:30 PM
NOT YOU!!

why


won.t 2.4 work under water?? anyone know. has anyone tried??
Feb 08, 2010, 08:37 PM
Registered User
Yes, it has been tried. No, it does not work!
Feb 08, 2010, 09:57 PM
Registered User
i heard the reason it does not work is because of the way the wave length of the frequency does not penetrate the water it just bounces off of it or something to do with the flux capacitor one or the other.
Feb 09, 2010, 06:51 AM
Registered User
I could tell you why, but its top secret and would have to kill you after
Feb 09, 2010, 02:00 PM
KC8WPF
CG Bob's Avatar
The resonant frequency of water is 2.5 GHz, close enough to 2.4 GHz to cause reception problems with a submerged object - and possible reception problems for skimmers.
Feb 09, 2010, 02:21 PM
Semi-Official Tinkerer
Subdave's Avatar
My advice, for what it is worth would be for anyone serious about model boating be it target or sub.
Is to find yourself a nice 75MHZ radio that you like, treat it nice, kiss it before you go to bed at night, maybe even a bedtime story of two!
Because you will be friends for a long,long,long,long,long time!!Dave.
Feb 09, 2010, 05:32 PM
Registered User
Definitely NO! Water 'rotates' at the 2.4 GHz frequency, which is why microwaves work... and interfere with WiFi internet. It's also the same reason Bluetooth doesn't work so well through your body... the 2.4 GHz spectrum is effectively 'absorbed' by water.
Feb 09, 2010, 06:04 PM
FROM THE MIND OF A MADMAN
gpzy's Avatar
No go for subs. Works above water just fine.
Feb 09, 2010, 07:18 PM
Registered User
We must see this question, once a month, at least.
Why not make a sticky?
Feb 09, 2010, 11:20 PM
Registered User
SilentHunter's Avatar
Quote:
Originally Posted by junglelord
We must see this question, once a month, at least.
Why not make a sticky?
Yeah really.

I WISH it did work for underwater. And the good mhz systems are getting fewer and fewer...
Jul 28, 2013, 04:03 PM
Smoke on , go !
zaguruinzasky's Avatar
has anyone tried with 35mhz ?
Jul 28, 2013, 05:47 PM
Registered User
35MHz will work, though I am not sure of the legalities of using it in different parts of the world. It does physically work. Anything should work in the 100kHz range to the 100MHz range. If you could find a transmitter that had a lower frequency, it would probably still work, though at sometime, you would start to get bandwidth limited, though, I think that you would have to get pretty far down before that became an issue.
Jul 28, 2013, 05:49 PM
Smoke on , go !
zaguruinzasky's Avatar
thanks. I'm in Italy, we use 35/40/2,4 legally. Thanks for your reply


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