Quote:
Originally Posted by dtvmcdonald
Its clearly a discriminator. There's a center tap on the secondary
and a coupling cap inside the transformer, in addition to
tuning caps.
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Further to the internal capacitor not depicted, note the voltage divider on the screen of the preceding stage. The Foster Seeley circuit did not reject AM hence they would always be preceded by a limiter.
The lowered screen voltage would indicate a limiter.