160_METER_CONVERTER

Published:2009/7/15 5:17:00 Author:Jessie | From:SeekIC

Designed for use with receiver covering 20-meter band. Uses up-conversion techniques to get from 1.8 MHz of 160-meter band to 14-MHz tunable IF of receiver. Butterworth band pass filter at input of converter covers 1.8-1.9 MHz. L1 and L2 each have 31 turns No. 22 enamel on T68-6 toroid core to give 5.1 μH. L3 is 50 μH, using 66 turns No. 18 enamel on T68-1 toroid. Other three coils each use T50-6 toroid core, with L4 having 7 turns No. 24 enamel, L5 11 turns No. 24 enamel, and L626 turns No. 28 enamel. U1 is SRA-1, CM-, or ML-1 diode-quad double-balanced mixer module. -M. Arnold and D. DeMaw, Build This High-Performance Top-Band Converter, QST, Oct. 1978, p 22-24 and 38.



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