Fix rbnmonitor filter

[OH1KH]

    Sometimes, some bands, it happens (here up in north Latitudes)
    that source filtering EU is too wide area. What middle and south
    EU can hear is not heard here.

    - That's why added source callsign filter criteria.

    You can define skimmers by countries using prefix, by callsign
    area using prefix and number or by specific skimmer callsign
    to get more narrower view what can be heard.

    - Fixed filter criteria window object anchoring
    - Fixed help (image)

[OH1KH]

expired