I have had really good luck using the 500hz roofing filter and adjusting down to 400Hz with DSP for rag chewing. In contests I will adjust to 350 or even 300Hz, depending on how close signals get bunched together, with very good decode. I've also made adjustments to AGC, which have also been an improvement. AGC DCY - soft, AGC SLP - 6, AGC THR - 16. All other AGC settings at default. These settings in my location, seem to work the best for me so far. Gene, N9TF K3S 10057
----- Original Message ----- From: [email protected] To: "elecraft" <[email protected]> Sent: Wednesday, April 13, 2016 8:56:06 AM Subject: Re: [Elecraft] K3s AFSK frequencies The optimal band width may depend on how crowded the band is. Wide filtering may work well for a DXer trying to copy a super weak signal on a quiet band. I only use RTTY in contests when the bands are packed and I have had great results using very narrow roofing filters. John KK9A from: Dave Hachadorian Tue Apr 12 23:54:57 EDT 2016 Current thinking is to use a fairly wide filter for RTTY. The software filters that are applied in the sound card are much narrower, about 50 Hz wide. Lately I've been using the 2.7 KHz roofing filter, with DSP bandwidth set to about 600 Hz. Dave Hachadorian, K6LL Yuma, AZ ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
