APRS-IS

• Connection Name: Display name of the connection
• Callsign: If you have a QTH.app license, this will default to the callsign selected in Station Preferences. If you are running QTH.app unlicensed, you will need to enter a callsign here in order to connect to APRS-IS.
• SSID: This will default to the SSID entered in in Station Preferences. If you would like to use a different SSID for your APRS-IS connection, you may enter one here.
• Auto-start: Automatically start this connection when QTH starts up
• APRS Server: Hostname of the APRS-IS server to connect to. Use the popoup button to the right to select from a predefined set of servers.
• APRS Port: Port number of the APRS-IS server to connect to
• Reconnect on network failure: Should this connection attempt to retry if there is a network interruption

Where do I put my passcode?

There is no passcode necessary. If you have installed a license for QTH.app, the system will automatically generate a passcode. If you are running in unlicensed mode, QTH.app will use a passcode of -1, which is enough to connect and receive packets, but any outgoing packets will not be routed on the APRS-IS network.

Filter Builder

The APRS-IS filter builder assists you in constructing an APRS-IS server filter.

• Include: Request that any that match this filter will be sent from the server to QTH
• Exclude: Request that packets matching this filter be excluded from being sent to QTH.

Filter Types

• packets in radius: Pass station reports (positions and objects) within a certain distance. Note that while the APRS-IS filter requires distance to be specified in kilometers, the unit displayed here will be your preferred ‘Large Length’ unit as selected in Preferences - Display. QTH will do the conversion as necessary.

  • from current location: Uses the current location from Location Services or GPS.

    Please note that this type of filter will not work when running in unlicensed mode - the server relies on your beacon to determine your location and unlicensed mode prevents beacons from being transmitted

  • of friend: Enter the callsign of a friend that is beaconing their position to the APRS-IS network.
  • from location: Enter the latitude and longitude of the center of the radius. Most common lat/lon formats are accepted.
• packets in area
  • visible map boundaries: Use the visible boundaries of the map to define an area to receive packets from. Automatically updated when the map is panned or zoomed.
• callsigns - Pass all position reports from callsigns:
  • in: Specify a comma-separated list of callsigns. Only exact callsigns will be matched.
  • starting with: Specify a list of callsign prefixes.
• object names: Pass all object reports:
  • in: Specify a comma-separated list of object names
• packet types: A multiselect dropdown will be provided where the following can be checked/unchecked:
  • Position packets
  • Objects
  • Items
  • Message
  • Query
  • Status
  • Telemetry
  • User-defined
  • NWS: NWS format messages and objects
  • Weather
• symbol: A symbol picker will be displayed, allowing you to choose the symbol the rule should match.
• digipeaters: Pass all packets that have been digipeated by a particular station(s). (the station’s call is in the path)
  • in: Specify a comma-separated list of callsigns. Only exact callsigns will be matched.
• group messages: This filter passes all message packets with the specified callsign-SSID(s) as the addressee of the message.
  • in: Specify a comma-separated list of callsigns. Only exact callsigns will be matched.
• expert filter: If you would like to manually construct you own filter using the details found on Server-side Filter Commands, you can type it into the text box here. Once saved, though, if it is a recognized form of one of the above filters, it may be displayed as such in the filter builder.