Antenna Analysis for M0MBO

This polar scatter plot displays WSPR spot distances by azimuth from the transmitting station. Each point represents a received WSPR report, with the angle indicating the receiving station's bearing and the radius showing the signal's travel distance.

Clusters of points in specific directions indicate azimuths where the antenna system and propagation support greater and more reliable signal reach. In contrast, gaps or shorter distances may reveal directional nulls, local obstructions, ground effects near the antenna, or a lack of receiving stations in those directions.

This polar plot displays the mean WSPR reception distance by azimuth, using a logarithmic scale to reflect the wide range of propagation paths. For each azimuth sector, the line indicates the average distance, minimizing the impact of short-term openings and emphasizing consistent directional trends.

When multiple bands are displayed, variations in shape and extent illustrate how antenna and propagation characteristics change with frequency. This approach simplifies the comparison of directional performance and effective reach across bands in real operating conditions.

This boxplot summarizes the distribution of WSPR reception distances for each band.

The median and quartiles indicate the typical propagation range and its variability, while the whiskers and outliers represent less common short- and long-distance paths. Comparing bands shows how propagation and antenna effectiveness vary with frequency, offering a concise view of which bands provide consistent coverage or occasional long-distance reach.

Extreme outliers have been removed to more accurately reflect antenna performance.

This boxplot shows the distribution of WSPR reception distances across all bands by hour of day.

The median and spread show how the propagation range changes throughout the day, with longer distances at night and shorter distances during the day. Aggregating multiple spots allows the plot to highlight when each band-antenna combination is most effective for reaching distant receivers. Extreme outliers have been removed to improve the accuracy of antenna performance assessment.

This interactive map shows all the spots information.