> I'd like to build myself a Long-Range, Low-Power IR Transceiver.
> I know that the "long range" and "low power" may seem contraddictory,

The following is NOT a low power design but will show you what can be
achieved and give many practical pointers.

"Light Beam Communicator. Build the air hop an inexpensive system that
communicates with light"
Rodney A Kreuter
Electronics Now, December 1992, pp 51-64

PIN diode RX
LED TX
1 mile this design.
2 to 6 miles possible (article explains)
5mW mean optical output
50 kHz carrier
300 to 300 Hertz audio

No lense = 40 feet
3" lense = 1 mile

TX cct is 2 pairs of LEDS with 6v feed and 22r in series with each series
pair of LEDs.


I have the article and could scan end send IF you can't find it locally.


        Russell McMahon

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