On Fri, 27 Feb 1998, James & Ili wrote:

> Hello,
>         I'm in the middle of designing a device that is going down into the
> deep, dark ocean.
>                                 James Holbrook
PTM: Use High Bright versions. I have used both 3500mcd and 10000mcd
versions. If one is not bright enough, take two ! If you got to see it by
eye, make it blink. Sometimes it is easier to 'see' a blinking light by
electronic devices too. Then you just use a derivating receiver or
resonating.
If you cant get the transmitter powerfull enough, make the receiver more
sensitive.
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PTM, pasi.mustalahti@utu.fi, ptmusta@utu.fi, http://www.utu.fi/~ptmusta
Lab.ins. (mikrotuki) ATK-keskus/Mat.Luon.Tdk                    OH1HEK
Lab.engineer (PC support) Computer Center                       OI7234
Mail: Turun Yliopisto / Fysla, Vesilinnantie 5, 20014
Pt 02-3336669, FAX 02-3335632 (Pk 02-2387010, NMT 049-555577)
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