This idea was put forth by "Don-W6JL" (Fallbrook, CA)!!! His quote: " I have tested many "noise blankers" in modern rigs, on the air. Both the I.F. noise gates and the DSP-based “noise reducers”. Not one works the way I feel it should. I think you need a separate noise receiver, independent of the main receiver, and tuned to a frequency that is outside of a ham band. (There have been excellent homebrew receivers using this approach for noise blanking). This then drives the noise gate, and is timed so that it gates the I.F before the noise pulse arrives there. A good blanker should have 40 dB minimum of noise pulse suppression, with adjustable blanking level and widths. I notice the K3 has these features, but it still does not seem to reduce impulse noise more than an S unit or two (6-12 dB), which is inadequate. I do not use blankers here myself; my entire station is homebrew and the receiver is a phasing, image cancelling job with no blanking at all, (or AGC for that matter). I get along fine with neither, even in contests."
****************************************************************************************** Eric-WA6HHQ & Co. + All the loyal "K3ers" WHADDAHYA THINK??? Jim/nn6ee ______________________________________________________________ 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
