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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[RTTY\]\s+RTTY\s+K3\s+Roofing\s+Filter\s*$/: 4 ]

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1. [RTTY] RTTY K3 Roofing Filter (score: 1): Author: John Reilly <reillyjf@comcast.net>; Date: Sat, 19 Oct 2013 14:38:35 -0600; Is there a consensus on the best K3 roofing filter for RTTY? I currently only have a 250 Hz, which isn't very useful. Thanks, - 73, John, N0TA _______________________________________________ RTTY mai; /archives//html/RTTY/2013-10/msg00273.html (6,973 bytes)
2. Re: [RTTY] RTTY K3 Roofing Filter (score: 1): Author: Hank Garretson <w6sx@arrl.net>; Date: Sat, 19 Oct 2013 13:47:29 -0700; Is there a consensus on the best K3 roofing filter for RTTY? I currently I used 250 Hz roofing filter for years with very good results. I have widened to 400 Hz and get better results. But 250 worked; /archives//html/RTTY/2013-10/msg00274.html (7,354 bytes)
3. Re: [RTTY] RTTY K3 Roofing Filter (score: 1): Author: Jim W7RY <w7ry@centurytel.net>; Date: Sat, 19 Oct 2013 13:50:51 -0700; 250 hz 73 Jim W7RY On 10/19/2013 1:38 PM, John Reilly wrote: Is there a consensus on the best K3 roofing filter for RTTY? I currently only have a 250 Hz, which isn't very useful. Thanks, - 73, John,; /archives//html/RTTY/2013-10/msg00275.html (7,231 bytes)
4. Re: [RTTY] RTTY K3 Roofing Filter (score: 1): Author: Kok Chen <chen@mac.com>; Date: Sat, 19 Oct 2013 14:49:30 -0700; A modern RTTY demodulator only requires between 23 Hz to 45 Hz of bandwidth for 45.45 baud RTTY. The RTTY demodulator has two of them, at 170 Hz from one another. This means that a perfect bandpass R; /archives//html/RTTY/2013-10/msg00282.html (10,497 bytes)

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