Worldwide Loran-C Signals and Space Weather
September 2009

Receiver: location Nuernberg 49.4159 N 11.1347 W, 8 m wire antenna in a tree, IF 11.8 kHz, bandwidth 22 kHz
Vertical time scale: 20 minute/pix with hourly ticks (quarter resolution of original 5 min averages)
Horizontal time scale: 22050 samples/s, 1.09 ms around expected pulse incidence
Colours: brightness proportional to fieldstrength (1/r distance and power corrected), colour hue shows 100 kHz carrier phase relative to Sylt groundwave

- Around Sep. 22, this season's first transpolar signals from Port Clarence (AK) appeared here.
- Unid Chayka GRI 5990 frequency is drifting further down, now about 16 ppb slow.
- Unid Chayka GRI 5960 is about 0.2 ppb slow.

LoranView index
NOAA Space Environment Center