[Elecraft] HF noise.....10 M

[Charlie T, K3ICH]

Anyone have any idea what those "weeblies" are on ten meters?   They 
typically start high in frequency and flitter past the receiver then stop 
abruptly.  They sound like a very unstable oscillator, almost like there's a 
random (or encoded ?) narrow frequency modulation as they move lower down 
the band.  They are quite noticeable on the panadapter display and appear to 
have several rates of downward frequency shift.  Also, occasionally, a wide 
band "hump" for lack of a better word. will appear in the display and pop 
off a second later as quickly as it came.  I've tried tracking them down, 
but they all seem to not be coming from anything in close proximity to me.

I've heard these weeblies for many years.  They're not a QRM problem since 
they're only in the passband for a second or so and occur at about 1 to 5 
per minute. It's just that this is the first time I've been able to "see" 
them on the screen.  The display kinda reminds of the Quark capture displays 
we used to see.

73, Charlie k3ICH

----- Original Message ----- 
From: "Thorpe, Jeffrey" <jthorpe at liberty.edu>
To: "elecraft" <elecraft at mailman.qth.net>
Sent: Tuesday, October 14, 2014 9:39 AM
Subject: Re: [Elecraft] HF noise.....30m


> Does the CW signal show up on a particular schedule? Does it seem to 
> repeat its transmission a lot?
> It would be interesting to hear a modern numbers station like this - 
> they've really become scarce these days since the rise of the internet.
>
> Jeff
> KG7HDZ
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to pincon at erols.com