diff --git a/lib/screens/line_of_sight_map_screen.dart b/lib/screens/line_of_sight_map_screen.dart
index 72c2232..c3fe476 100644
--- a/lib/screens/line_of_sight_map_screen.dart
+++ b/lib/screens/line_of_sight_map_screen.dart
@@ -1021,10 +1021,20 @@ class _LosProfilePainter extends CustomPainter {
     if (samples.length < 2) return;
 
     final minY = samples
-        .map((s) => math.min(s.terrainMeters, s.lineHeightMeters))
+        .map(
+          (s) => math.min(
+            math.min(s.terrainMeters, s.lineHeightMeters),
+            s.refractedHeightMeters,
+          ),
+        )
         .reduce(math.min);
     final maxY = samples
-        .map((s) => math.max(s.terrainMeters, s.lineHeightMeters))
+        .map(
+          (s) => math.max(
+            math.max(s.terrainMeters, s.lineHeightMeters),
+            s.refractedHeightMeters,
+          ),
+        )
         .reduce(math.max);
     final ySpan = math.max(1.0, maxY - minY);
     final maxDist = math.max(1.0, samples.last.distanceMeters);
diff --git a/lib/services/line_of_sight_service.dart b/lib/services/line_of_sight_service.dart
index 14d8fc6..61e9e27 100644
--- a/lib/services/line_of_sight_service.dart
+++ b/lib/services/line_of_sight_service.dart
@@ -212,6 +212,7 @@ class LineOfSightService {
       startAntennaHeightMeters: startAntennaHeightMeters,
       endAntennaHeightMeters: endAntennaHeightMeters,
       kFactor: kFactor,
+      frequencyMHz: frequencyMHz,
       obstructionToleranceMeters: obstructionToleranceMeters,
     );
   }
diff --git a/pubspec.lock b/pubspec.lock
index ed84c40..22cad80 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -347,6 +347,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "8.2.2"
+  flutter_svg:
+    dependency: "direct main"
+    description:
+      name: flutter_svg
+      sha256: "87fbd7c534435b6c5d9d98b01e1fd527812b82e68ddd8bd35fc45ed0fa8f0a95"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.3"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -597,6 +605,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -1010,6 +1026,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.5.2"
+  vector_graphics:
+    dependency: transitive
+    description:
+      name: vector_graphics
+      sha256: a4f059dc26fc8295b5921376600a194c4ec7d55e72f2fe4c7d2831e103d461e6
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.19"
+  vector_graphics_codec:
+    dependency: transitive
+    description:
+      name: vector_graphics_codec
+      sha256: "99fd9fbd34d9f9a32efd7b6a6aae14125d8237b10403b422a6a6dfeac2806146"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.13"
+  vector_graphics_compiler:
+    dependency: transitive
+    description:
+      name: vector_graphics_compiler
+      sha256: "5a88dd14c0954a5398af544651c7fb51b457a2a556949bfb25369b210ef73a74"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
   vector_math:
     dependency: transitive
     description:
@@ -1043,7 +1083,7 @@ packages:
     source: hosted
     version: "1.3.0"
   web:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: web
       sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"