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*2021 AND SOME EVENTS ARE BEING PROPOSED. Keep them coming and let us know the details! (amstreasure@googlemail.com)

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Model Sub Weekend, 28th, 29th August. Bluewater Parkway, Greenhithe, DA9 9

Bournville Sub Day. Sept 2021 is looking likely. More details TBA.

Barrow in Furness Regatta and Sub day. Maybe in Sept 2021. Details TBA.

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» GRP end caps
Underwater navigation using UHF ? EmptyTue Jul 20, 2021 9:31 am by david f

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Underwater navigation using UHF ? EmptyTue Jul 20, 2021 9:15 am by david f

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Underwater navigation using UHF ? EmptyFri Jul 16, 2021 3:14 pm by david f

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Underwater navigation using UHF ? EmptyThu Jul 15, 2021 1:25 am by Telusboats

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Underwater navigation using UHF ? EmptyTue Jul 13, 2021 3:54 am by tsenecal

» UHF radio control for submarines (openLRS, LoRa, FSK etc. on 458Mhz and 433Mhz )
Underwater navigation using UHF ? EmptyMon Jul 05, 2021 10:43 am by david f

» The workings of a sheer line submarine
Underwater navigation using UHF ? EmptyWed Jun 30, 2021 9:03 am by subkraft

» Bonjour from France.
Underwater navigation using UHF ? EmptyMon Jun 28, 2021 1:43 pm by Tobyledog

» Underwater navigation using UHF ?
Underwater navigation using UHF ? EmptyFri Jun 25, 2021 5:46 pm by SimonH

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    Underwater navigation using UHF ?

    david f
    david f
    david f
    AMS Treasurer

    Posts : 2172
    Join date : 2010-11-10
    Age : 71
    Location : Cumbria
    • Post n°1

    Underwater navigation using UHF ? Empty Underwater navigation using UHF ?

    Post  david f Fri Jun 18, 2021 9:37 am


    When Jonathan introduced the topic of SDR (Software Defined Radio ) in the UHF radio control thread - he said "just remember that you will kiss good bye to a few hours of your life if you read any further :)"

    Well!

    Have a look at this link and click the video.

    https://www.rtl-sdr.com/category/kerberossdr/

    Substitute the boat for a sub and the TX for one on 433/458 and you may have it?

    David
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    SimonH
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    SimonH

    Posts : 30
    Join date : 2020-09-29
    Location : Nottingham, UK
    • Post n°2

    Underwater navigation using UHF ? Empty Re: Underwater navigation using UHF ?

    Post  SimonH Fri Jun 25, 2021 5:46 pm

    multiple antennas on a sub could be a challenge, anybody tried GPS underwater?
    It works to a degree, as I did once work on a system whose GPS Rx was aslo used by divers. As a result we had to copy the warnings about disconnected antennas underwater leading to disorentation & death into the manaul for a 6 wheel truck based system! OTT or what.
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