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Non Radio Frequency Communication???

R/C Submarine modelers

Postby markymark » Sat Nov 22, 2003 10:20 am

Hi,
I'm designing a small sub to be released in a sea water tank! We're therefore having issues with using Radio frequency for our communications, due to the lack of space for a large antenna, power issues and salt water affecting the range (which we need to be quite large).

We're therefore thinking of impressing a signal on an E field and transmitting it across the tank! Does anyone have any ideas or experience on this, as any help would be extremely appreciated!

Thanx,
Mark
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Postby KOEZE » Sun Nov 23, 2003 8:44 am

This is a very interesting subject. I could make very good use of the solution for this for my telemetry unit.
One option is to use an acoustic modem. I know they are around. Short range should not be very hard to build but I haven't seen anything like it on the net.

EJK
You don't stop playing because you get older,
you get older because you stop playing.
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Postby markymark » Mon Nov 24, 2003 8:14 am

Unfortunately acoustic communication is out of the question, as we have to stick to a specific set of guidlines, which rules out acoustics!

Thanks for the idea tho!

Mark
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