RF Signals

[Himszy]

Hi,

Do RF Signals travel through water? Or, do i have to try and place the chip
above the water?

Thanks Michael

 

[Art]

Depends a whole lot on your application and the spectrum limits you attempt
to function within.
"Himszy" <michaelhimsAT@blueyonder.co.uk> wrote in message
news:drZ_d.897$Ab.54@text.news.blueyonder.co.uk...

Hi,

Do RF Signals travel through water? Or, do i have to try and place the
chip
above the water?

Thanks Michael

 

[tom]

Depends on the frequency of the radio waves and how pure the water is.
Submarines receive extremely low frequency signals by trailing a long wire
antenna behind them. However, as a rule, I would think for the most part
that you could basically consider water (especially conductive salt-water)
to be radio-wave opaque. But for a toy sub in a fresh-water swimming pool,
maybe you could use RF if it was over very short distances. Sound travels
really well through water --- how about a system based on sound?

--
73
Tom Howell
HAM Radio Callsign:
VA7FAB
Skype Name:
va7fab_tom_in_vancouver