what is this and ow can i reproduces something simuler

[boeNorway]

Ok the heeding did not give you a lot of info

but it is this youtube video sowing audio being transmitted to underwater head set
wireless

do you super heroes here hav a clue how i can make something lice it

video starts at the spott where the gadget is

https://www.youtube.com/watch?v=JWyiKMLvHTs&t=953s

[Carl-NC]

but it is this youtube video sowing audio being transmitted to underwater head set
wireless

do you super heroes here hav a clue how i can make something lice it

Wireless will propagate a few inches underwater, which is apparently what he is doing. Just far enough to get through the wall of the plastic housing.

[boeNorway]

Wireless will propagate a few inches underwater, which is apparently what he is doing. Just far enough to get through the wall of the plastic housing.

Thanks for the anser Carl

is there any A schematic, or diagram for this around ?

[kt315]

no schematics on kevar 150 and 300. something as clone pi or tracker pi.
take my board bara and do same pp.

[kt315]

......

[kt315]

sch

https://forum.cxem.net/index.php?/topic/156460-%D0%BC%D0%B5%D1%82%D0%B0%D0%BB%D0%BB%D0%BE%D0%B8%D1%81%D0%BA%D0%B0%D1%82%D0%B5%D0%BB%D1%8C-kevar-150-%D0%B2%D1%8B%D0%B4%D1%80%D0%B0-%D0%BD%D1%83%D0%B6%D0%BD%D0%B0-%D1%81%D1%85%D0%B5%D0%BC%D0%B0/

[kt315]

brd

[boeNorway]

thanks for the pictures kt315 , i was also wondering what circuit that managed to turn on or off the device by one tap of a magnet i see now that it is a reed switch and its firmware on the ATMega chip that do the trick

[kt315]

Carl, i can not insert a link on youtube, i got LEAVE THE PAGE message.
can you give SWITCH REED video link for the man? tia

[homefire]

Ultra Sonic Comm Set. Seen them years ago. https://www.ecnmag.com/news/2019/02/...n-scuba-divers