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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