At least the LCD flatscreens are far less prone to external machnetic field interference.... 73 groeten Peter petervn-at-hetnet-nl pa0pvn-at-hetnet-nl pa0pvn-at-amsat-org only large files: pa0pvn-at-gmail-com There are 10 kind of people, those who can count to 1010 on their fingers, and those who count to 1111111111.
________________________________ From: [EMAIL PROTECTED] on behalf of BILL GUYGER Sent: Fri 14-12-2007 18:18 To: [EMAIL PROTECTED]; Dale Boresz Cc: [email protected] Subject: Re: [Flexradio] Strange Audio Noise Gives an entire new meaning to ANL doesn't it. Animal Noise Limiter........ But seriously folks, the radio stations I work for are on the 13th and 16th floors of a high rise. The IT manager's desk is against the wall that is the back wall of the elevator shaft. Every time an elevator car goes by his computer monitor wavers, more than likely due to magnetic fields associated with the control cabling that move along the shaft way as the cars go up and down. Also, when I've had my head up above the suspended ceilings in the hallways pulling cables between studios etc. you can hear the wiring in conduits vibrate in their magnetic fields in response to the elevator SCR motor drives current drains following the gating signals ramping up and down. I suspect that a line choke that will filter out that kind of hash would cost the apartment building a pretty penny. Bill AD5OL ----- Original Message ---- From: Jim McLester <[EMAIL PROTECTED]> To: Dale Boresz <[EMAIL PROTECTED]> Cc: [email protected] Sent: Friday, December 14, 2007 10:53:43 AM Subject: Re: [Flexradio] Strange Audio Noise My 12-paw alarm make a lot of QRN also. Perhaps a K9NB system, would even have an amateur radio sound to the title! Jim - W4YXU Dale Boresz wrote: > While you're at it, I have a howling cat that sometimes creates > excessive QRM. Please consider an HCNB as well. > > Dale > WA8SRA > > > Eric Wachsmann wrote: >> Very interesting. I think this is our first report of elevator noise. :-) >> Perhaps we can someday have an ENB (Elevator Noise Blanker). Something to >> go with the WPIB (Water Pipe Interference Blocker). >> >> >> >> >> >> Eric Wachsmann >> >> FlexRadio Systems >> >> >> >> _____ >> >> From: Edwin Marzan [mailto:[EMAIL PROTECTED] >> Sent: Friday, December 14, 2007 10:24 AM >> To: Tim Ellison; Eric Wachsmann; 'Bill Bailey'; [email protected] >> Subject: RE: [Flexradio] Strange Audio Noise >> >> >> >> Hello gents, >> >> I am receiving the exact signal. It has been tracked down to elevator noise. >> My landlord put in a new elevator in the summer and now I'm receiving >> exactly what you described. This is not a Flex problem in my view. I've been >> told by other ham operators that the new elevators need to be installed with >> a filter. I have yet to approach my landlord as I am just glad that he lets >> me use the roof. My problem occurs on 40 and 80 meters. >> >> I hope this helps. >> >> Edwin Marzan >> AB2VW >> >> >>> From: [EMAIL PROTECTED] >>> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [email protected] >>> Date: Thu, 13 Dec 2007 17:10:23 -0500 >>> Subject: Re: [Flexradio] Strange Audio Noise >>> >>> Also, look on page 5 of the FLEX-5000 Troubleshooting Guide available for >>> >> download from the web site for possible solutions. >> >>> http://support.flex-radio.com/Downloads.aspx?id=190 >>> >>> >>> >>> -Tim >>> >>> -----Original Message----- >>> From: [EMAIL PROTECTED] >>> >> [mailto:[EMAIL PROTECTED] On Behalf Of Eric Wachsmann >> >>> Sent: Thursday, December 13, 2007 4:25 PM >>> To: 'Bill Bailey'; [email protected] >>> Subject: Re: [Flexradio] Strange Audio Noise >>> >>> Double check your buffer settings on the FLEX-5000 Control panel, and in >>> >> PowerSDR (Setup Form -> Audio Tab, DSP Tab). For starters, use the >> >>> following: >>> >>> Driver: 1024 >>> Audio: 1024 >>> DSP RX/TX: 4096 >>> >>> Start at 96kHz and get that working before you move to 192kHz. >>> >>> >>> Eric Wachsmann >>> FlexRadio Systems >>> >>> >>>> -----Original Message----- >>>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >>>> radio.biz] On Behalf Of Bill Bailey >>>> Sent: Thursday, December 13, 2007 3:14 PM >>>> To: [email protected] >>>> Subject: [Flexradio] Strange Audio Noise >>>> >>>> I am observing a peculiar audio noise on my 5000A that is perhaps >>>> catastrophic. It sounds like a woodpecker or machine gun burst for 2 to >>>> 4 >>>> seconds. It stops and comes back randomly. It shows up on the >>>> panadaptor as a visible signal that is very peculiar. It looks like a >>>> series of half circles perhaps as many as 6 or 7. There would be up to >>>> 7 half circles side by side going from small to large back to small in >>>> order left to right. >>>> >>>> >>>> >>>> I realize that this is a poor description, however it's driving me nuts. >>>> >>>> >>>> >>>> Has any one else seen an artifact like this? >>>> >>>> >>>> >>>> Best Regards, >>>> >>>> >>>> >>>> Bill Bailey...AE6EQ >>>> >>>> -------------- next part -------------- An HTML attachment was >>>> scrubbed... >>>> URL: http://mail.flex-radio.biz/pipermail/flexradio_flex- >>>> radio.biz/attachments/20071213/c6636b57/attachment.html >>>> _______________________________________________ >>>> FlexRadio mailing list >>>> [email protected] >>>> 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 >>> [email protected] >>> 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 >>> [email protected] >>> 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/ >>> >>> >> >> >> _____ >> >> The best games are on Xbox 360. Click here for a special offer on an Xbox >> 360 Console. Get it now! <http://www.xbox.com/en-US/hardware/wheretobuy/> >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071214/ad58abbf/attachment.html >> _______________________________________________ >> FlexRadio mailing list >> [email protected] >> 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 > [email protected] > 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 [email protected] 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/ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071214/840385c2/attachment.html _______________________________________________ FlexRadio mailing list [email protected] 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/ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20071214/7627b734/attachment.html _______________________________________________ FlexRadio mailing list [email protected] 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/
