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OCR: Ferrite Intermediate frequency Volume loop antenna ampli ier Last intermediate control Corve frequency transformer 5-10K To Qudio Podio- amplifier frequer ncy ampifi er +21 circuit tweer WwW w andr Lne for automatic qain control fQv Weak Sensitivity 500 Inser1 tihis CIrCuit 100 bet 'ween ard Gain Detector output freauency intermcdiate Converter Diode Qudia amplif csrcut 1500 fnaer Goin