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Old Feb 07, 2010, 10:43 PM
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2.4 underwater

is 2.4 underwater better than 72?
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Old Feb 08, 2010, 07:39 AM
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Short answer, No
2.4 will not work under water, and 72 is for aircraft. 75MHZ is the one. Dave.
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Old Feb 08, 2010, 07:30 PM
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why

won.t 2.4 work under water?? anyone know. has anyone tried??
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Old Feb 08, 2010, 07:37 PM
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Yes, it has been tried. No, it does not work!
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Old Feb 08, 2010, 08:57 PM
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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.
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Old Feb 09, 2010, 05:51 AM
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I could tell you why, but its top secret and would have to kill you after
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Old Feb 09, 2010, 01:00 PM
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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.
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Old Feb 09, 2010, 01:21 PM
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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.
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Old Feb 09, 2010, 04:32 PM
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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.
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Old Feb 09, 2010, 05:04 PM
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No go for subs. Works above water just fine.
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Old Feb 09, 2010, 06:18 PM
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We must see this question, once a month, at least.
Why not make a sticky?
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Old Feb 09, 2010, 10:20 PM
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Quote:
Originally Posted by junglelord View Post
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...
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Old Jul 28, 2013, 03:03 PM
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has anyone tried with 35mhz ?
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Old Jul 28, 2013, 04:47 PM
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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.
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Old Jul 28, 2013, 04:49 PM
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thanks. I'm in Italy, we use 35/40/2,4 legally. Thanks for your reply
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