6_METER_PREAMPLIFIER_PROVIDES_20_dB_GAIN_AND_LOW_NF

Published:2009/7/6 4:19:00 Author:May | From:SeekIC

Circuit NotesC1, C2, and C3 are miniature ceramic or plastic trimmers. T1 (main winding) is 0.34μH. Use of 11 turns of no. 24 enameled wire on a T37-10 toroid core. The antenna winding has one turn, and Q1 the source winding has three turns. T2 primary consists of 11 turns of no. 24 enameled wire on a T37-10 toroid. Tap Q1 drain is three turns from C2 the end of the winding. The secondary has three turns. T3 is the same as T2, except its secondary has one turn.



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