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Author Topic: 27Mhz gear for submarines  (Read 1446 times)

Davy1

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27Mhz gear for submarines
« on: January 30, 2023, 01:00:58 pm »

Some more positive progress on developing equipment on 27MHz for submarines.
The problem for submariners is, of course, that 2.4GHz equipment is not suitable if you want to submerge completely.
The background is that we have been developing ideas which "maybe" some commercial provider could manufacture and develop further. So we are not really suggesting easy DIY stuff but everyone is welcome to join in the development. LORA on 458MHz has been shown to work well but 27MHz is a globally available frequency. (Smaller - particularly important for the lower frequencies) Underwater antenna could be the next thing?
https://www.theassociationofmodelsubmariners.com/t1972p100-27mhz-radio-ideas#12123
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nemesis

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Re: 27Mhz gear for submarines
« Reply #1 on: February 03, 2023, 03:20:23 pm »

pm sent
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rhavrane

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Re: 27Mhz gear for submarines
« Reply #2 on: February 03, 2023, 05:15:22 pm »

Bonjour Davy,
As you can see in this example, a submarine is abe to dive to a depth of 3 meters equipped with a 41 MHz radio control, so it could be even better with a 27 MHz one, without any special feature on the radio :
https://youtu.be/MyWzYXgae_c
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Davy1

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Re: 27Mhz gear for submarines
« Reply #3 on: February 04, 2023, 08:51:58 am »

Merci pour votre contribution à l'utilisation de fréquences r/c plus basses pour les sous-marins!

Several people have commented, and we seem to  have forgotten how well these frequencies worked for us.

Le problème est la disponibilité de cet équipement.

Le 41MHz est-il facilement disponible en France ?

Lovely model!

David
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