> "The circuit surrounding op amp 3016-2 in the FT-1000 schematic is nothing > more than an active bandpass filter, center frequency of about 1025 Hz, Q > = 35, with a gain of about 10.5 dB."
The APF filter is active on the Main Rx, CW mode only. However, Fc is not confined to 1025 Hz; with the front panel "APF" control, it's adjustable roughly over the range of the CW BFO offset when the filter switch is engaged. Paul, W9AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
