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ACTIVE_CW_FILTER

2017-02-14 06:02  
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ACTIVE_CW_FILTER
Modifications made on MFJ Enterprises OWE-2 active audio filter per mit maximum flexibility. Circuit provides fixed bandwidth of 180 or 110 Hz centered on 750 Hz, or optional variable bandwidth for which center frequency can be adiusted in range of 280 to 1590 Hz.-H. M. Berlin, Increased Flexibility for the MFJ Enterprises CW Filters, Ham Radio, Dec. 1976, p 58-60.