BUILD YOUR OWN UFO BINO-SCOPE UNIT
DIFFERENT TYPES OF UNIT YOU CAN BUILD.

Here we present two variations on this project and also a look at the 'Marfa Lights'.

CURRENT-TO-VOLTAGE CONVERTOR UNIT SCHEMATICS

The schematic on the left depicts a Current-to-Voltage converter circuit with a photodiode: if a 10 microamp signal comes from the photodiode, then a 2.2v signal will appear at the opamp output pin. The input is DC coupled for good lo-freq response. *However, bright lights will overload the circuit.*

We powered mine ours with a single 9V battery. Batt (-) goes to gnd and to pin-4, while batt (+) goes to pin-6 and to the (+) points on the schematic. The output signal will ride on 4.5VDC, so you might need to put a capacitor in series with the output to block the DC from your audio amplifier (my audio amp already had an internal capacitor in series with its input.) Either that, or use two 9V batteries wires as a standard Op-amp bipolar supply, and ground the (+) input pin of the op amp directly to the batteries' common connection.

ALTERNATING CURRENT - COUPLED VERSION

If you build this "UFO Scope," definitely make a point to use it quite a bit before going hunting for "craft." You want to become familiar with the sounds of all conventional light sources, including lamps, headlights, aircraft, fires, and if you manage to crank the gain high enough, the twinkle patterns of various stars. That way you'll be able to point the device at the local version of "Marfa Lights" and either say "yeah, sure, it's just headlights," or possibly "holy $#!%!, the aliens modulate their ship-lights for voice communications!"

THE MARFA LIGHTS. The Marfa lights are visible every clear night between Marfa and Paisano Pass in northeastern Presidio County,TX. At times they appear colored as they twinkle in the distance. They move about, split apart, melt together, disappear, and reappear. Presidio County residents have watched the lights for over a hundred years. Many explanations for the lights have been offered, ranging from an electrostatic discharge, swamp gas, to Alien Visitors.

NEXT - ADVICE AND TIPS ON HOW TO USE YOUR NEW UFO-SCOPE



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