[Lowfer] 13 year LDE?

[Dexter McIntyre W4DEX]

John Andrews wrote:
> Nothing visible here last night.
>
I believe we need someone out west to look for this signal.  I start 
seeing it at grayline time around the Rockies and loose it at my 
sunrise.  Last night it went flat line just before my sunrise.

w4dex.com/grabber

Maybe an AM broadcast spur from a station with an ovenized oscillator?  
I use to see many patterns like this while monitoring the AM band 
carriers with Argo.  Not as many now with most big stations having GPS 
locked frequency sources.  WSM Nashville still has a unique carrier 
pattern that changes with temperature. 

https://www.dropbox.com/sh/wp8tw0k2grto7v4/ogXOmEtGoG

Dex