Meteor Trail Reflection Viewer

Reeve Observatory - Anchorage, Alaska  USA
Geographic coordinates: 61.19928 °N : 149.95652 °W


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All times are in Coordinated Universal Time (UTC)


The spectrogram on this page is not continuously active. When active, it automatically reloads every 4 minutes but the plots themselves are uploaded at an interval determined by the time scale

Narrowband Spectrum Monitor: One or two Icom R-75 general coverage receivers on an HF log periodic antenna

The chart shows the relative frequency of one or two signals over time; usually the higher frequency is above chart center Frequencies monitored usually are WWV and WWVH time services on 5, 10, 15, 20 and 25 MHz but other frequencies may be used (see note below). The vertical scale is in Hz and shows the approximate offset of the received signal from the transmitted carrier frequency. The signal level is under control of the software automatic gain control.

Note: As of 1 October 2016, the trace at about 1000 Hz, if present, is the United States time service WWV on 15 MHz

Signal indications may be due to meteor trail reflections and are shown as intermittent traces.
Frequency deviations or frequency disturbances may be due to rapid reconfiguration of Earth's ionosphere caused by x-ray flux from a solar flare.

Meteor Monitor commissioned 7 June, 2014