This relates to the APF in the FT-2000 but has additional useful information on APF in general :
http://www.ac0c.com/main/page_ft2k_roofing_filters_ft2000_dsp_filters.html Dale W4OP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html