Stránka:roll 1948.djvu/102

RADIO

48-G-57
Make a simple crystal radio set, and log at least 6 stations. Make a regenerative tube set (one or more tubes), and log 12 stations. Either for coup: both for grand coup. II

48-G-58
Make a multi-tube set (4 or more), using radio frequency amplification. Wind the coils for any of the above sets constructed. Either for coup; both for grand coup. II

48-G-59
Know and be able to explain at least 24 common symbols used in radio construction. Make a chart and explain. Draw a diagram, and use it in building a successful crystal set. Either for coup; both for grand coup. II

48-G-60
Construct a workable speaker unit of magnetic type. Construct a successful unit for cone type. Either for coup; both for grand coup. II

48-G-61
Build a complete radio cabinet with built-in horn of expotential type. Build a complete radio cabinet, and mount a dynamic speaker in same. Either for coup; both for grand coup. II

48-G-62
Build a successful B battery eliminator. Build a successful A battery charger. Either for coup; both for grand coup. II

48-G-63
Build a spark coil transmitter for C.W. transmission. Know the Morse or international code for use with the same. Obtain an amateur license to operate a transmitting station. Either for coup; both for grand coup. III