[Lowfer] WEOH signal plots

Mon, 19 Jan 2004 21:51:01 -0600

Was there an aurora last night or other ionosphere disturbance? I don't see
any skywave signals on Lyle's E/W loop now. Last night had all kinds of
varying signal on that loop.

Mike>WE0H

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Lyle Koehler
Sent: Sunday, January 18, 2004 8:49 PM
To: [email protected]
Subject: Re: [Lowfer] WEOH signal plots

Semi-live plots of WEOH are now available at
http://www.cpinternet.com/~lyle/weoh-plot.jpg

The plot is updated about 2 minutes after the hour and half-hour, and shows
what the signal was doing during the previous 40-minute period.

WEOH is about 70 miles south of me and is transmitting on an east-west loop.
My plots are generated by DL4YHF's Spectrum Lab software, with inputs from
three different receivers, each connected to a different antenna. The
north-south receiving loop is my multiturn, tuned 8-foot loop with an
IC-756PRO receiver; the east-west loop is a single turn 10-foot loop going
through a simple downconverter ("software IF" receiver), and the LEK LowFER
vertical is connected to an HP3586B selective level meter. If there were no
skywave propagation, I would expect the N-S loop and vertical to have good,
constant signal levels, and the E-W loop signals to stay fairly close to the
night-time noise level.

The plot colors look great in SpecLab but obviously lose something in the
capture process. I can understand the fuzziness but don't know why the black
background turns to purple...

Lyle