From 64d41de67e15d995a7e30337aad7188cb988e02a Mon Sep 17 00:00:00 2001
From: Erik de Wildt <erik.de.wildt@gmail.com>
Date: Wed, 29 Oct 2025 10:17:36 +0100
Subject: [PATCH 1/4] Add distance unit setting to choose between Kilometer or
 Miles.

---
 .../grid/grid_active_heard_stations.vue       | 10 ++++--
 freedata_gui/src/components/settings_gui.vue  | 32 +++++++++++++++++++
 freedata_gui/src/locales/en_English.json      |  6 +++-
 freedata_gui/src/store/settingsStore.js       |  1 +
 freedata_server/config.ini.example            |  1 +
 freedata_server/config.py                     |  1 +
 6 files changed, 48 insertions(+), 3 deletions(-)

diff --git a/freedata_gui/src/components/grid/grid_active_heard_stations.vue b/freedata_gui/src/components/grid/grid_active_heard_stations.vue
index 02e202e4..b3c5aa00 100644
--- a/freedata_gui/src/components/grid/grid_active_heard_stations.vue
+++ b/freedata_gui/src/components/grid/grid_active_heard_stations.vue
@@ -32,7 +32,13 @@ function getDateTime(timestampRaw) {
 
 function getMaidenheadDistance(dxGrid) {
   try {
-    return parseInt(distance(settings.remote.STATION.mygrid, dxGrid));
+    const distanceKm = parseInt(distance(settings.remote.STATION.mygrid, dxGrid));
+
+    if (settings.remote.GUI.distance_unit === "mi") {
+       return Math.round(distanceKm * 0.621371)
+    }
+
+    return distanceKm;
   } catch (e) {
     //
   }
@@ -202,7 +208,7 @@ function transmitPing(callsign) {
               <td>
                 <small>{{ item.gridsquare }}</small>
               </td>
-              <td><small>{{ getMaidenheadDistance(item.gridsquare) }} km</small></td>
+              <td><small>{{ getMaidenheadDistance(item.gridsquare) }} {{settings.remote.GUI.distance_unit}}</small></td>
               <td>
                 <i
                   :class="getActivityInfo(item.activity_type).iconClass"
diff --git a/freedata_gui/src/components/settings_gui.vue b/freedata_gui/src/components/settings_gui.vue
index 2690cf46..df3fc877 100644
--- a/freedata_gui/src/components/settings_gui.vue
+++ b/freedata_gui/src/components/settings_gui.vue
@@ -150,6 +150,34 @@
       </div>
     </label>
   </div>
+
+  <!-- Distance Unit Setting -->
+  <div class="input-group input-group-sm mb-1">
+    <span class="input-group-text w-50 text-wrap">
+      {{ $t('settings.gui.distanceunit') }}
+      <button
+        type="button"
+        class="btn btn-link p-0 ms-2"
+        data-bs-toggle="tooltip"
+        :title="$t('settings.gui.distanceunit_help')"
+      >
+        <i class="bi bi-question-circle" />
+      </button>
+    </span>
+    <select
+      id="distance_unit_selector"
+      v-model="settings.remote.GUI.distance_unit"
+      class="form-select form-select-sm w-50"
+      @change="onChange"
+    >
+      <option value="km">
+        {{ $t('settings.gui.distanceunitkilometers') }}
+      </option>
+      <option value="mi">
+        {{ $t('settings.gui.distanceunitmiles') }}
+      </option>
+    </select>
+  </div>
 </template>
 
 <script>
@@ -171,6 +199,10 @@ function saveSettings() {
 
 export default {
   data() {
+    // Ensure distance_unit has a default value
+    if (settings.remote.GUI.distance_unit !== "km" || settings.remote.GUI.distance_unit !== "mi") {
+      settings.remote.GUI.distance_unit = "km";
+    }
     return {
       availableLanguages, // imported from i18next configuration
       settings,
diff --git a/freedata_gui/src/locales/en_English.json b/freedata_gui/src/locales/en_English.json
index 8296c525..3a107f0e 100644
--- a/freedata_gui/src/locales/en_English.json
+++ b/freedata_gui/src/locales/en_English.json
@@ -231,7 +231,11 @@
             "colormode_help": "Set the GUI color mode",
             "colormodelight": "light",
             "colormodedark": "dark",
-            "colormodeauto": "auto"
+            "colormodeauto": "auto",
+            "distanceunit": "Distance Unit",
+            "distanceunit_help": "Select the preferred distance unit",
+            "distanceunitkilometers": "Kilometers",
+            "distanceunitmiles": "Miles"
         },
         "station": {
             "introduction": "Station related settings, like changing your callsign, location and general behaviour.",
diff --git a/freedata_gui/src/store/settingsStore.js b/freedata_gui/src/store/settingsStore.js
index d9ba26e7..d810b8aa 100644
--- a/freedata_gui/src/store/settingsStore.js
+++ b/freedata_gui/src/store/settingsStore.js
@@ -92,6 +92,7 @@ const defaultConfig = {
 
     GUI: {
       auto_run_browser: true,
+      distance_unit: "km",
     },
     EXP: {
       enable_ring_buffer: false,
diff --git a/freedata_server/config.ini.example b/freedata_server/config.ini.example
index bfeb7f2b..0eb32e21 100644
--- a/freedata_server/config.ini.example
+++ b/freedata_server/config.ini.example
@@ -72,6 +72,7 @@ adif_wavelog_api_key = API-KEY
 
 [GUI]
 auto_run_browser = True
+distance_unit = km
 
 [EXP]
 enable_ring_buffer = False
diff --git a/freedata_server/config.py b/freedata_server/config.py
index 50081742..afbe6ac8 100644
--- a/freedata_server/config.py
+++ b/freedata_server/config.py
@@ -86,6 +86,7 @@ class CONFIG:
 
         'GUI': {
             'auto_run_browser': bool,
+            'distance_unit': str,
         },
         'EXP': {
             'enable_ring_buffer': bool,

From e25f7852df21374a89c862757504a9dcb3d979b4 Mon Sep 17 00:00:00 2001
From: Erik de Wildt <erik.de.wildt@gmail.com>
Date: Wed, 29 Oct 2025 10:38:41 +0100
Subject: [PATCH 2/4] Update locales for distance unit setting.

---
 freedata_gui/src/locales/cz_Čeština.json  | 6 +++++-
 freedata_gui/src/locales/de_Deutsch.json  | 6 +++++-
 freedata_gui/src/locales/it_Italiano.json | 6 +++++-
 freedata_gui/src/locales/no_Norsk.json    | 6 +++++-
 4 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/freedata_gui/src/locales/cz_Čeština.json b/freedata_gui/src/locales/cz_Čeština.json
index 89912359..fe921002 100644
--- a/freedata_gui/src/locales/cz_Čeština.json
+++ b/freedata_gui/src/locales/cz_Čeština.json
@@ -211,7 +211,11 @@
             "selectlanguage": "Zvolte jazyk",
             "selectlanguage_help": "Nastaví preferovaný jazyk pro GUI",
             "waterfalltheme": "Téma vodopádu",
-            "waterfalltheme_help": "Nastaví barevné téma pro vodopád"
+            "waterfalltheme_help": "Nastaví barevné téma pro vodopád",
+            "distanceunit": "Jednotka vzdálenosti",
+            "distanceunit_help": "Vyberte preferovanou jednotku vzdálenosti",
+            "distanceunitkilometers": "Kilometry",
+            "distanceunitmiles": "Míle"
         },
         "station": {
             "introduction": "Nastavení stanice, volací značka, lokátor a základní chování.\n",
diff --git a/freedata_gui/src/locales/de_Deutsch.json b/freedata_gui/src/locales/de_Deutsch.json
index 98c3e118..520b0ba9 100644
--- a/freedata_gui/src/locales/de_Deutsch.json
+++ b/freedata_gui/src/locales/de_Deutsch.json
@@ -231,7 +231,11 @@
             "colormode_help": "Farbmodus der GUI einstellen",
             "colormodelight": "hell",
             "colormodedark": "dunkel",
-            "colormodeauto": "auto"
+            "colormodeauto": "auto",
+            "distanceunit": "Entfernungseinheit",
+            "distanceunit_help": "Wählen Sie die bevorzugte Entfernungseinheit aus",
+            "distanceunitkilometers": "Kilometer",
+            "distanceunitmiles": "Meilen"
          },
         "station": {
             "introduction": "Stationsbezogene Einstellungen, wie das Ändern des Rufzeichens, des Standorts und des allgemeinen Verhaltens.",
diff --git a/freedata_gui/src/locales/it_Italiano.json b/freedata_gui/src/locales/it_Italiano.json
index 294c07f4..0cbb8ea1 100644
--- a/freedata_gui/src/locales/it_Italiano.json
+++ b/freedata_gui/src/locales/it_Italiano.json
@@ -231,7 +231,11 @@
             "colormode_help": "Definisci il colore della GUI",
             "colormodelight": "light",
             "colormodedark": "dark",
-            "colormodeauto": "auto"
+            "colormodeauto": "auto",
+            "distanceunit": "Unità di distanza",
+            "distanceunit_help": "Seleziona l'unità di distanza preferita",
+            "distanceunitkilometers": "Chilometri",
+            "distanceunitmiles": "Miglia"
         },
         "station": {
             "introduction": "Configurazione relativa alla stazione, quale nominativo, localizzazione e comportamento generale.",
diff --git a/freedata_gui/src/locales/no_Norsk.json b/freedata_gui/src/locales/no_Norsk.json
index 162aad0d..4d1625e9 100644
--- a/freedata_gui/src/locales/no_Norsk.json
+++ b/freedata_gui/src/locales/no_Norsk.json
@@ -228,7 +228,11 @@
             "colormode_help": "GUI-fargemodus",
             "colormodelight": "lys",
             "colormodedark": "mørk",
-            "colormodeauto": "auto"
+            "colormodeauto": "auto",
+            "distanceunit": "Avstandsenhet",
+            "distanceunit_help": "Velg foretrukket avstandsenhet",
+            "distanceunitkilometers": "Kilometer",
+            "distanceunitmiles": "Miles"
         },
         "station": {
             "introduction": "Stasjonsrelaterte innstillinger, som å endre kallesignal, plassering og generell oppførsel.",

From 1b56712ceb6ffbbd8d00975aae96949729ede534 Mon Sep 17 00:00:00 2001
From: Erik de Wildt <erik.de.wildt@gmail.com>
Date: Thu, 30 Oct 2025 13:57:37 +0100
Subject: [PATCH 3/4] Add a support for Nautical Miles

---
 .../src/components/grid/grid_active_heard_stations.vue        | 4 ++++
 freedata_gui/src/components/settings_gui.vue                  | 3 +++
 freedata_gui/src/locales/cz_Čeština.json                      | 3 ++-
 freedata_gui/src/locales/de_Deutsch.json                      | 3 ++-
 freedata_gui/src/locales/en_English.json                      | 3 ++-
 freedata_gui/src/locales/it_Italiano.json                     | 3 ++-
 freedata_gui/src/locales/no_Norsk.json                        | 3 ++-
 7 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/freedata_gui/src/components/grid/grid_active_heard_stations.vue b/freedata_gui/src/components/grid/grid_active_heard_stations.vue
index b3c5aa00..f163da68 100644
--- a/freedata_gui/src/components/grid/grid_active_heard_stations.vue
+++ b/freedata_gui/src/components/grid/grid_active_heard_stations.vue
@@ -38,6 +38,10 @@ function getMaidenheadDistance(dxGrid) {
        return Math.round(distanceKm * 0.621371)
     }
 
+    if (settings.remote.GUI.distance_unit === "nm") {
+       return Math.round(distanceKm * 0.539957)
+    }
+
     return distanceKm;
   } catch (e) {
     //
diff --git a/freedata_gui/src/components/settings_gui.vue b/freedata_gui/src/components/settings_gui.vue
index df3fc877..f787131d 100644
--- a/freedata_gui/src/components/settings_gui.vue
+++ b/freedata_gui/src/components/settings_gui.vue
@@ -176,6 +176,9 @@
       <option value="mi">
         {{ $t('settings.gui.distanceunitmiles') }}
       </option>
+      <option value="nm">
+        {{ $t('settings.gui.distanceunitnauticalmiles') }}
+      </option>
     </select>
   </div>
 </template>
diff --git a/freedata_gui/src/locales/cz_Čeština.json b/freedata_gui/src/locales/cz_Čeština.json
index fe921002..b1581e45 100644
--- a/freedata_gui/src/locales/cz_Čeština.json
+++ b/freedata_gui/src/locales/cz_Čeština.json
@@ -215,7 +215,8 @@
             "distanceunit": "Jednotka vzdálenosti",
             "distanceunit_help": "Vyberte preferovanou jednotku vzdálenosti",
             "distanceunitkilometers": "Kilometry",
-            "distanceunitmiles": "Míle"
+            "distanceunitmiles": "Míle",
+            "distanceunitnauticalmiles": "Námořní míle"
         },
         "station": {
             "introduction": "Nastavení stanice, volací značka, lokátor a základní chování.\n",
diff --git a/freedata_gui/src/locales/de_Deutsch.json b/freedata_gui/src/locales/de_Deutsch.json
index 520b0ba9..eb3f9f23 100644
--- a/freedata_gui/src/locales/de_Deutsch.json
+++ b/freedata_gui/src/locales/de_Deutsch.json
@@ -235,7 +235,8 @@
             "distanceunit": "Entfernungseinheit",
             "distanceunit_help": "Wählen Sie die bevorzugte Entfernungseinheit aus",
             "distanceunitkilometers": "Kilometer",
-            "distanceunitmiles": "Meilen"
+            "distanceunitmiles": "Meilen",
+            "distanceunitnauticalmiles": "Nautische Meilen"
          },
         "station": {
             "introduction": "Stationsbezogene Einstellungen, wie das Ändern des Rufzeichens, des Standorts und des allgemeinen Verhaltens.",
diff --git a/freedata_gui/src/locales/en_English.json b/freedata_gui/src/locales/en_English.json
index 3a107f0e..62024477 100644
--- a/freedata_gui/src/locales/en_English.json
+++ b/freedata_gui/src/locales/en_English.json
@@ -235,7 +235,8 @@
             "distanceunit": "Distance Unit",
             "distanceunit_help": "Select the preferred distance unit",
             "distanceunitkilometers": "Kilometers",
-            "distanceunitmiles": "Miles"
+            "distanceunitmiles": "Miles",
+            "distanceunitnauticalmiles": "Nautical Miles"
         },
         "station": {
             "introduction": "Station related settings, like changing your callsign, location and general behaviour.",
diff --git a/freedata_gui/src/locales/it_Italiano.json b/freedata_gui/src/locales/it_Italiano.json
index 0cbb8ea1..414b4d74 100644
--- a/freedata_gui/src/locales/it_Italiano.json
+++ b/freedata_gui/src/locales/it_Italiano.json
@@ -235,7 +235,8 @@
             "distanceunit": "Unità di distanza",
             "distanceunit_help": "Seleziona l'unità di distanza preferita",
             "distanceunitkilometers": "Chilometri",
-            "distanceunitmiles": "Miglia"
+            "distanceunitmiles": "Miglia",
+            "distanceunitnauticalmiles": "Miglia nautiche"
         },
         "station": {
             "introduction": "Configurazione relativa alla stazione, quale nominativo, localizzazione e comportamento generale.",
diff --git a/freedata_gui/src/locales/no_Norsk.json b/freedata_gui/src/locales/no_Norsk.json
index 4d1625e9..28a3ab3b 100644
--- a/freedata_gui/src/locales/no_Norsk.json
+++ b/freedata_gui/src/locales/no_Norsk.json
@@ -232,7 +232,8 @@
             "distanceunit": "Avstandsenhet",
             "distanceunit_help": "Velg foretrukket avstandsenhet",
             "distanceunitkilometers": "Kilometer",
-            "distanceunitmiles": "Miles"
+            "distanceunitmiles": "Miles",
+            "distanceunitnauticalmiles": "Nautiske miles"
         },
         "station": {
             "introduction": "Stasjonsrelaterte innstillinger, som å endre kallesignal, plassering og generell oppførsel.",

From dd1f4bbb8f0b3248a5e24e5c5da0d9fb2c7a2665 Mon Sep 17 00:00:00 2001
From: Erik de Wildt <erik.de.wildt@gmail.com>
Date: Thu, 30 Oct 2025 14:02:17 +0100
Subject: [PATCH 4/4] Update Dutch locale for distance unit settting.

---
 freedata_gui/src/locales/nl_Nederlands.json | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/freedata_gui/src/locales/nl_Nederlands.json b/freedata_gui/src/locales/nl_Nederlands.json
index 48939446..ba2f3ff7 100644
--- a/freedata_gui/src/locales/nl_Nederlands.json
+++ b/freedata_gui/src/locales/nl_Nederlands.json
@@ -231,7 +231,12 @@
       "colormode_help": "Stel de GUI kleurmodus in",
       "colormodelight": "licht",
       "colormodedark": "donker",
-      "colormodeauto": "automatisch"
+      "colormodeauto": "automatisch",
+      "distanceunit": "Afstandeenheid",
+      "distanceunit_help": "Selecteer de voorkeurseenheid voor afstanden",
+      "distanceunitkilometers": "Kilometers",
+      "distanceunitmiles": "Mijlen",
+      "distanceunitnauticalmiles": "Nautische Mijlen"
     },
     "station": {
       "introduction": "Station gerelateerde instellingen, zoals het wijzigen van uw roepnaam, locatie en algemeen gedrag.",