Hi,

May be this could be of interest to those involved in
propagation effects at 2200m of wavelength.

I'm observing hga22 ("space"-frequency) since May 2010.
Bearing from here is ~SE, distance ~1001 km.

Annual plots of field strengths:
http://df3lp.de/misc/hga22/hga22_2010.png
http://df3lp.de/misc/hga22/hga22_2011.png

Antenna: 30cm ferrite rod, RX: MV61 Selective Level Meter,
frequency locked to 135.43 kHz, 100 Hz of bandwidth.

To wipe out the FSK I'm using a running median filter of 1 min.

Longitude of RX is ~10.1E, so the sidereal time lag to UTC
should be approx. +40min.

That antique system refuses to die obstinately since >12 years.
"First Light" was in 1999 receiving 75 kHz on the occasion of
a solar eclipse: http://df3lp.de/misc/eclipse/eclipse_1999.png
So I will keep it running until...

Peter, df3lp,
Kiel, North Germany

PS: Merry Xmas and Happy New Year!