NR in the K3 is a tool that primarily turns the volume down. Well, in all fairness, it does so selectively, turning down the noise more than the signal, but it does result in a reduction in signal even though the S/N ratio gets better. I'm thinking at 100 hz, there is so little noise for NR to process that it is easier for the signal to get treated as noise and to be attenuated.
You may find you get the rig to sound better if you quit using NR and adjust the AGC slope or threshold instead. Set the AGC threshold higher and reduce the ratio a bit. This will help to generate more of a ratio between the signal and background noise. ESE - nice call by the way ! 73 - Keith N1AS - - K3 711 - -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Huffman Sent: Monday, February 02, 2009 10:05 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Narrow CW Filter I'm getting used to my new K3, but have a question. My K3 has the 400hz 8-pole filter and the latest firmware. I've noticed that the difference between running the DSP filter at 100hz and 150hz is greatly increased volume at 150hz. With the NR on (F2-4) easy listening at 100hz will bow your ears out at 150hz. Is this just me? I run AF gain at 9 o'clock and RF gain at 12 o'clock. I have a second question. I liked to run my Orion on CW with the AF gain up, RF gain down, narrow filter and NR on. That way it listening to the other station was like listening to a code practice oscillator. On the K3 I still get background hiss with the noise reduction on. Are there better settings to use to get the sound I want with no background noise? Thanks in advance. 73 de K1ESE John ______________________________________________________________ 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 ______________________________________________________________ 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
