Most of the crystals that are useful for a radio aren’t ones that look particularly pretty, such as galena, which is a crystal form of lead. Second, tuning them is a gigantic pain in the rear. A crystal radio that uses a real crystal is called a "cat’s whisker" set, because of …
Sep 14, 2007 · During World War II, GIs in the field built really amazing simple radios to listen too. These were made with materials that they could get their …
Jul 25, 2007 · Step 1, Select an appropriate site.Step 2, Dig a rectangular hole 6.5′ by 3′. The hole should be deep such that if you stand in the hole, the walls come up to your armpits.Step 3, Dig sumps four or five inches wide stretching the entire width of the hole on the left and right sides. Make these at least two feet deep. These are there so you can dispose of any grenades that are thrown into your …
Nov 17, 2007 · To make a crystal radio, start by building the radio capacitor out of aluminum foil, paper, and wire. Next, build your primary (25-turn) coil and secondary (90-turn) coil out of toilet paper rolls, wire, and masking tape.
Step Wrap the magnet wire around the length of the cardboard tube about 100 to 150 times. Leave enough room on at least one end to secure the tube to the Styrofoam.
Foxhole radios were built by American troops in the 1940s in order to pick up radio transmissions while stationed in the foxholes of Europe. The radios were used mainly for entertainment purposes, but they also brought up-to-date news to the troops if an English station could be found.
A crystal set is the most basic type of radio receiver. It is capable of receiving AM (amplitude modulated) transmissions, which are generally found on the long, medium and short wave bands. The magic of the crystal set is that no power source is required; a tiny fraction of the transmitted signal provides sufficient power for the signal to be heard.
does matter for the radio station. If you get a station in sorta good, but itÕs not perfect, you may be able to correct that by adding extra loops. The Detector Ð Soldiers were given blued razor blades as part of their supplies. The bluing is some sort of oxidized coating from getting heated up, it probably keeps it sharper for longer.
Copyright 2018 - Pet WordPress Theme.