Someone who knows Morse code or just going to study it, can build a simple device, shown in the figure. On a plywood Board install the battery B and the lamp L of the flashlight. Contactor In the manufacture of contact plate faulty relay. Now connect the parts to each other by wires. To increase the “range” of the Telegraph, put a lamp made from tin or heavy paper tube — a tube length of 20 cm.
Recommend to read
OCEAN ESCORT
In 1950-e years the Navy has a new enemy — jet aircraft. High speed and powerful weapons of new generation aircraft need to increase the range of their interception. But the first...
SINGLE HOOK-FIVE SUITS
you will be able to hang if you do the five coat hangers, are shown in the figure. Material — plywood desyatikilometrovy, additional bracket fabricate from the half-spools.
