Fieldbook
Documentation

Utilities

Maidenhead locator

Change coordinates into a grid square, or a grid square into coordinates.

The Maidenhead locator changes a location into a grid square, for example IO91wm. It can also change a grid square back into coordinates.

Open the locator

  1. Select Utilities in the navigation bar.
  2. Select Maidenhead locator.
The Maidenhead locator on a phone, changing coordinates in London into the grid square IO91wm, with a map

Find your grid square

  1. Select To grid square.
  2. Type the Latitude and Longitude in decimal degrees. South and west are negative.
  3. Alternatively, select Use my location.

The grid square shows below, with a map of the location. To copy the grid square, select the copy button.

Find the coordinates of a grid square

  1. Select To coordinates.
  2. Type the grid square. It can have 2, 4, 6 or 8 characters.

The coordinates of the centre of the grid square show below, with a map.

To set your grid square in a logbook, you do not need this page. Select Grid square in the station setup, then select the locate button.

Band conditions

How each HF band is looking, day and night.

Antenna length

Calculate how much wire you need for common wire antennas.