SHORTWAVE_CONVERTERS_FOR_SCANNERS

Published:2009/6/23 4:39:00 Author:Jessie | From:SeekIC

The AM aircraft band at 118 to 136 MHz is used in this converter design as an IF output The second harmonic ofthe 55 MHz crystal（110 MHz） mixes with the shortwave input of 8 to 36 MHz．AnNE602 IC IS used for the mlxer Sensitivity IS about 3μV． If desired，a crystal tuning circuit for finetuning can be obtained ustng a varactor



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