> Andy-
> In case you aren't RF aware, propagation actually goes down as frequency
> goes up. That's the basis of Shawn's guesstimate.
>
> Brian
> -----Original Message-----
> From: SHAWN ELLIS <spe@MERC.RX.UGA.EDU>
> Date: Wednesday, March 04, 1998 5:35 PM
> <snip>
> >> Anyone any idea how well a 1.3GHz radio transmission will penetrate fresh
> >> water. I build model subs and I know that standard 40MHz Radio control
> gear
> >> works well down to ten feet or so. I'm thinking of mounting a black and
> >> white TV camera on a sub. I've seen a transmission system that uses the
> >> 1.3GHz telemetry bands to carry a video feed, but I'm not sure how well
> it
> >> will work.
> <snip>
> >> Andy
>
> >hmmm, my guess is you'll be lucky to get 1 inch!  Probably have to
> >use something really powerful anyway...  Are you sure you can't have a
> wire?
>
Yeah, Brian, Thanks, I was in too much of a hurry to explain.  Along
those same lines though, there ARE some ULF transmitter/recievers
used for VOICE transmission through water/air.  Obviously, being ULF
(Ultra Low Frequency) your bandwidth will be limited by the frequency
so I doubt you'll have enough bandwidth for REAL TIME video.  mabye
at really sorry res....