100-Radio-Hookups-EICO-1924

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Fig, 67
Fig. 67. A four tribe Nentrodyne circuit haying two stages
of radio frequency amplification and two stages of audio frequency
amplification, thus adding volume to distance. The constants of
the circuit are the same as those motioned in conjunction with
Fig. 66. The audio frequency transformers may be of any standard
make.
Fig. 68
Fig. 68. A five tube Nentrodyne circuit. This is the same
as that of Fig. 66 but with the addition of a two -stage audio frequency
amplifier. It is more reliable than the four tube circuit
of Fig. 67, being less critical in adjustment.
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