[ICOM] Icom 756PRO question

Bill Gode, Sr. w9nhq at comcast.net
Tue Feb 21 16:37:37 EST 2006


Hi Dick,

Here's an interesting site with recordings of RF noise.

See if you can identify your local QRN.

http://ve3hls.tripod.com/noise/rfihome.html

73,

Bill, W9NHQ


----- Original Message ----- 
From: "Dick Flanagan" <dick at twohams.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Tuesday, February 21, 2006 3:28 PM
Subject: RE: [ICOM] Icom 756PRO question


> At 11:52 AM 2/21/2006, Adam Farson wrote:
> >The NB will not
> >suppress the type of noise which shows on the spectrum scope as 
> >an infinite
> >series of harmonically-related tones.
>
> What about the "hash" that looks like a little saw-tooth 
> marching across the bottom of the scope and sounds like someone 
> is using an arc-welder?  I have always written this off as 
> arching powerline insulators as it starts and stops 
> unpredictably.  Is this the kind of interference you would refer 
> to as "an infinite series of harmonically-related tones"?
>
> Just curious as I would love to find a NB that would handle it.
>
> 73, Dick
> --
> Dick Flanagan K7VC NV SM
> E-mail: k7vc at arrl.org
>



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