Hallo – recently I have screenshotted some 130 medium wave channels for 6,5 hours each, spaced 9 kHz as well as 10 kHz:
* 600 kHz – 531 kHz on the 16th of December, 2010 within a window of mostly 10 Hz. Time was from about 19:00 UTC to 05:00 UTC.
* 1602 kHz – 999 kHz on the 26/27th of January, 2011 within a window of mostly 20 Hz. Preferred time has been 01:30 UTC to 08:00 UTC, with some screenshots from the afternoon (Asian DX)
Receiver was SDR-IP with GPS-disciplined oscillator.
The screenshots for each channel can be downloaded from:
http://bit.ly/eyIstc
Info via dxld