100-Radio-Hookups-EICO-1924
Revista histórica de 1924 con 100 consejos para radio aficionados.
Revista histórica de 1924 con 100 consejos para radio aficionados.
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100 RADIO HOOK-UPS
Fig. 2 -
Fig. 3
Fig. 2. By using a two slide tuning coil, greater selectivity
will be obtained due to the closer variation of the number of turns
of wire used.
Fig. 3. A circuit having only one control may be used, a
variometer doing all the tuning. This circuit is fairly selective
and has the added advantage that no sliding contacts are used.
Fig. 4
Fig.
Fig. 4. A tuning coil that has taps instead of a slider may
be used by connecting a variable condenser in the circuit as shown.
The latter accomplishes quite sharp tuning.
Fig. 5. A still more selective circuit may be obtained by using
a loose coupler. This, however, will not yield as loud signals as
the former circuit.
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