View Layers

QTH.app has several built-in map layers that display certain information on the map. These standard layers are:

• APRS Entities such as stations and objects
• Station Tracks
• Range Circles
• Dead Reckoning lines

However, additional layers can be added to the map. These layers are specific to each window; it is possible to have different windows with different layers displayed.

Pins

The Pins layer holds any pins that might have been placed on the map. Removing the layer will destroy any pins it contains.

Pins can be placed in two different ways:

1. Using the Pin Tool
   1. On the drawing panel, select the pin tool
   2. Optionally, select the tint color to be used for the pin head
   3. Click the map to drop a pin
2. Using the Search Bar
   1. Type a set of coordinates in the search bar.
   2. Supported coordinates
      • Decimal Lat/Lon. Example: dd.dddddddº, dd.dddddddº
      • Degrees, Minutes, Seconds. Example: "ddº mm' ss", ddº mm' ss"
      • Degrees, Minutes. Example: ddº mm.mm', ddº mm.mm'
      • Universal Transverse Mercator (UTM). Example: 17T 630084 4833438
      • United States National Grid (USNG). Example: 18S UJ 23371 06519
      • Maidenhead is NOT supported as an entry format, as the standard Maidenhead spec specifies a grid area, rather than a specific lat/lon point.
   3. Press enter

Individual pins can be removed by selecting the pin on the map, and clicking Remove Pin in the info panel.

By default, the label displayed on a pin is the coordinates formatted using the currently selected format in Preferences → Display. However, you may change the label by replacing the text in the info panel.

OpenStreetMap

Replaces the Apple Map with maps from the OpenStreetMap project

OpenTopoMap

Replaces the Apple Map with maps from the OpenTopoMap project

CyclOSM

Replaces the Apple Map with maps from the CyclOSM project

Local Tile Server

Replaces the Apple Map with maps from tile server whose URL pattern you supply. This layer generally must be configured before it will work properly.

The typical use case for this layer type is to use QTH.app with a local tile server (either hosted locally on your machine, or on your local network) when an Internet connection is not available.

You must supply a “URL template” that points to the tile server you would like to use.

The URL pattern looks like this:

http://localhost:8080/tile/{z}/{x}/{y}.png

The placeholders are as follows:

1. {z} Replaced with the zoom level value.
2. {x} Replaced with the position of the tile in the X asis for this zoom level
3. {y} Replaced with the position of the tile in the X asis for this zoom level

USNG / MGRS Grid

Draws United States National Grid (USNG) grid lines and coordinates on the map.

USNG is essentially the same as the Military Grid Reference System (MGRS), except for the following diffences:

1. It does not include the UPS coordinate system for polar regions
2. It does not use the zone boundary exceptions for Svalbard and southwest Norway

Maidenhead Grid

Draws Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) grid lines and coordinates on the map.