This archive contains the source code and object files which accompany the 1992 QST Magazine article "Low Cost Digital Signal Processing for the Radio Amateur" by Dave Hershberger, W9GR. These programs are not public domain software but may be used for noncommercial purposes by amateur radio operators and other electronic hobbyists. No "shareware" fee is requested. A license is required, however, for commercial use of this software. License inquiries may be directed to Quantics at the address below. The QST Magazine article cited above describes a TMS320C10 based hardware platform upon which this software runs. The hardware goes between a communications receiver and a loudspeaker, and includes its own 1 watt audio amplifier. The hardware is available in kit form (a printed circuit board and all components which mount on it are included but no enclosure or power supply is provided). The kit is available from: Quantics P. O. Box 2163 Nevada City, California 95959-2163 The files in this archive are: LMS.TMS LMS algorithm automatic notch & denoiser filter LMS.HXH Intel hex file for 74S472 high byte bipolar PROM LMS.HXL Intel hex file for 74S472 low byte bipolar PROM CW400C.TMS 200 Hz bandwidth linear phase CW filter @ 400 Hz CW400C.HXH Intel hex file for 74S472 high byte bipolar PROM CW400C.HXL Intel hex file for 74S472 low byte bipolar PROM CW750C.TMS 200 Hz bandwidth linear phase CW filter @ 750 Hz CW750C.HXH Intel hex file for 74S472 high byte bipolar PROM CW750C.HXL Intel hex file for 74S472 low byte bipolar PROM CW1KC.TMS 200 Hz bandwidth linear phase CW filter @ 1000 Hz CW1KC.HXH Intel hex file for 74S472 high byte bipolar PROM CW1KC.HXL Intel hex file for 74S472 low byte bipolar PROM One final note: even though the QST article mentions that these files may be found on COMPUSERVE, and even though I am listed as a COMPUSERVE member, I almost never check in to that service. So if you send me electronic mail via COMPUSERVE, I may not get it for a year (really)! But you CAN send me e-mail via internet, which I check regularly. My internet e-mail address is dlh@gvgdsd.gvg.TEK.COM and it is possible to send e-mail to internet from COMPUSERVE (but don't ask me how). 73, Dave Hershberger W9GR dlh@gvgdsd.gvg.TEK.COM