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
IN THE NAME OF SPEED
Middle bomber BB-22 has left its mark in the domestic aviakonstruktorov. About him was legendary. Indeed, this plane was far ahead at the speed of modern bombers, and some fighters. ...
SNOW “PLANE”
In No. 10 for the year 2007 was published material designer homebrew A. Knyazeva from the city of Rasskazovo of the Tambov area made them a few snowmobiles. More detail in the...
