Re: [Flexradio] is there a 'notch' filter
Next time this happens try moving your IF frequency up a bit to see if that helps move it out of the passband. Eric Wachsmann FlexRadio Systems -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] radio.biz] On Behalf Of FireBrick Sent: Tuesday, December 25, 2007 4:34 PM To: FlexRadio List Subject: [Flexradio] is there a 'notch' filter I've got a birdy, dead on 1.820 which is a common DX frequency. Can't Notch it out with ANF. Probably a video card birdy. Another dead on 1.810 which I'm betting is related. Any aspect of PWSDR that can cut this down? ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] is there a 'notch' filter
I think I am missing something here. Perhaps I am taking Firebricks posting too literally. 1820 is in the CW portion of 160 if I am not mistaken. A notch on 1820 would eliminate the birdie and also anything else i.e. a CW signal on that frequency. The ANF in the Flex-5000 is so good when I turn it on while receiving a CW signal, all that is left are clicks and I have never mastered that version of Morse. Perhaps what you guys are wishing for is a tunable notch filter. As for me, I find the filters in the Flex to be sufficient to screen anything but a dead zero beat interfering signal. Please help me understand if I have mis-understood. 73's Jim, W4ATK [EMAIL PROTECTED] http://web.mac.com/jimrogers_w4atk -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dave Blaschke Sent: Tuesday, December 25, 2007 9:55 PM To: flexradio@flex-radio.biz; FireBrick Subject: Re: [Flexradio] is there a 'notch' filter These are BC band harmonics. I too, would welcome a notch filter, and a spot button for CW Merry Christmas Happy New Year Dave, W5UN At 22:33 12/25/2007, you wrote: I've got a birdy, dead on 1.820 which is a common DX frequency. Can't Notch it out with ANF. Probably a video card birdy. Another dead on 1.810 which I'm betting is related. Any aspect of PWSDR that can cut this down? ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] is there a 'notch' filter
I had this happen yesterday. I was listening on 7001.5 for Antarctica and a few dozen hz down the band was a spur from some electrical noiseI was wishing for a sharp manually tunable notch that I could sneak up from below and give that carrier hell. If I turned on the ANF it did a great job on the noise went away but so did Antarctica. I believe that is what Bill is writing about Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071226/bc572a36/attachment.html ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] is there a 'notch' filter
Bill, Did you try toggling your SR button (spur reduction)?? 73, Dudley WA5QPZ At 04:33 PM 12/25/2007, FireBrick wrote: I've got a birdy, dead on 1.820 which is a common DX frequency. Can't Notch it out with ANF. Probably a video card birdy. Another dead on 1.810 which I'm betting is related. Any aspect of PWSDR that can cut this down? ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] is there a 'notch' filter
Lee A Crocker wrote: I had this happen yesterday. I was listening on 7001.5 for Antarctica and a few dozen hz down the band was a spur from some electrical noiseI was wishing for a sharp manually tunable notch that I could sneak up from below and give that carrier hell. If I turned on the ANF it did a great job on the noise went away but so did Antarctica. I believe that is what Bill is writing about Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071226/bc572a36/attachment.html ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ My ClearSpeech Speaker DSP algorithm will take out a carrier but does not effect reasonable speed CW. Maybe the PowerSDR ANF could be adjusted to do the same thing. Tom W0IVJ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
[Flexradio] is there a 'notch' filter
I've got a birdy, dead on 1.820 which is a common DX frequency. Can't Notch it out with ANF. Probably a video card birdy. Another dead on 1.810 which I'm betting is related. Any aspect of PWSDR that can cut this down? ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
Re: [Flexradio] is there a 'notch' filter
These are BC band harmonics. I too, would welcome a notch filter, and a spot button for CW Merry Christmas Happy New Year Dave, W5UN At 22:33 12/25/2007, you wrote: I've got a birdy, dead on 1.820 which is a common DX frequency. Can't Notch it out with ANF. Probably a video card birdy. Another dead on 1.810 which I'm betting is related. Any aspect of PWSDR that can cut this down? ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/ ___ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
