diff --git a/openrtx/include/core/graphics.h b/openrtx/include/core/graphics.h
index 423c68a1..c13089ee 100644
--- a/openrtx/include/core/graphics.h
+++ b/openrtx/include/core/graphics.h
@@ -302,13 +302,13 @@ void gfx_drawBattery(point_t start, uint16_t width, uint16_t height,
  * @param width: Smeter width
  * @param height: Smeter height
  * @param rssi: rssi level in dBm
- * @param squelch: squelch level in percentage
- * @param volume: speaker volume level in percentage
+ * @param squelch: squelch level in range {0, 15}
+ * @param volume: speaker volume level in range {0, 255}
  * @param drawVolume: whether the volume bar should be drawn
  * @param color: color of the squelch bar
  */
 void gfx_drawSmeter(point_t start, uint16_t width, uint16_t height, float rssi,
-                    float squelch, float volume, bool drawVolume, color_t color);
+                    uint8_t squelch, uint8_t volume, bool drawVolume, color_t color);
 
 /**
  * Function to draw Smeter + level meter of arbitrary size.
@@ -319,11 +319,11 @@ void gfx_drawSmeter(point_t start, uint16_t width, uint16_t height, float rssi,
  * @param height: Smeter height
  * @param rssi: rssi level in dBm
  * @param level: level in range {0, 255}
-* @param volume: speaker volume level in percentage
-* @param drawVolume: whether the volume bar should be drawn
+ * @param volume: speaker volume level in range {0, 255}
+ * @param drawVolume: whether the volume bar should be drawn
  */
 void gfx_drawSmeterLevel(point_t start, uint16_t width, uint16_t height,
-                         float rssi, uint8_t level, float volume, bool drawVolume);
+                         float rssi, uint8_t level, uint8_t volume, bool drawVolume);
 
 /**
  * Function to draw GPS SNR bar graph of arbitrary size.
diff --git a/openrtx/src/core/graphics.c b/openrtx/src/core/graphics.c
index ce0f449f..295038dd 100644
--- a/openrtx/src/core/graphics.c
+++ b/openrtx/src/core/graphics.c
@@ -741,7 +741,7 @@ void gfx_drawBattery(point_t start, uint16_t width, uint16_t height,
  *
  */
 void gfx_drawSmeter(point_t start, uint16_t width, uint16_t height, float rssi,
-                    float squelch, float volume, bool drawVolume, color_t color)
+                    uint8_t squelch, uint8_t volume, bool drawVolume, color_t color)
 {
     color_t white =  {255, 255, 255, 255};
     color_t yellow = {250, 180, 19 , 255};
@@ -781,14 +781,14 @@ void gfx_drawSmeter(point_t start, uint16_t width, uint16_t height, float rssi,
     if (drawVolume)
     {
         // Speaker Volume Bar
-        uint16_t volume_width = width * volume;
+        uint16_t volume_width = (width * volume) / 255;
         point_t volume_pos = {start.x, (uint8_t) (start.y + 2)};
         gfx_drawRect(volume_pos, volume_width, volume_height, white, true);
     }
 
     // Squelch bar
     uint16_t squelch_height = bar_height * 2 / bar_height_divider ;
-    uint16_t squelch_width = width * squelch;
+    uint16_t squelch_width = (width * squelch) / 15;
     point_t squelch_pos = {start.x, (uint8_t) (start.y + 2 + volume_height)};
     gfx_drawRect(squelch_pos, squelch_width, squelch_height, color, true);
 
@@ -827,7 +827,7 @@ void gfx_drawSmeter(point_t start, uint16_t width, uint16_t height, float rssi,
  *
  */
 void gfx_drawSmeterLevel(point_t start, uint16_t width, uint16_t height, float rssi,
-                         uint8_t level, float volume, bool drawVolume)
+                         uint8_t level, uint8_t volume, bool drawVolume)
 {
     color_t red =    {255, 0,   0  , 255};
     color_t green =  {0,   255,   0, 255};
@@ -843,7 +843,7 @@ void gfx_drawSmeterLevel(point_t start, uint16_t width, uint16_t height, float r
     if (drawVolume)
     {
         // Speaker Volume Bar
-        uint16_t volume_width = width * volume;
+        uint16_t volume_width = (width * volume) / 255;
         point_t volume_pos = start;
         gfx_drawRect(volume_pos, volume_width, volume_height, white, true);
     }
@@ -859,7 +859,7 @@ void gfx_drawSmeterLevel(point_t start, uint16_t width, uint16_t height, float r
     }
     // Level bar
     uint16_t level_height = bar_height * 3 / bar_height_divider;
-    uint16_t level_width = (level / 255.0 * width);
+    uint16_t level_width = (width * level) / 255;
     point_t level_pos = { start.x, (uint8_t) (start.y + 2 + volume_height)};
     gfx_drawRect(level_pos, level_width, level_height, green, true);
     // RSSI bar
diff --git a/openrtx/src/ui/default/ui_main.c b/openrtx/src/ui/default/ui_main.c
index ab1464fb..fc30f7df 100644
--- a/openrtx/src/ui/default/ui_main.c
+++ b/openrtx/src/ui/default/ui_main.c
@@ -261,8 +261,8 @@ void _ui_drawMainBottom()
 {
     // Squelch bar
     float rssi = last_state.rssi;
-    float squelch = last_state.settings.sqlLevel / 16.0f;
-    float volume = platform_getVolumeLevel() / 255.0f;
+    uint8_t  squelch = last_state.settings.sqlLevel;
+    uint8_t  volume = platform_getVolumeLevel();
     uint16_t meter_width = CONFIG_SCREEN_WIDTH - 2 * layout.horizontal_pad;
     uint16_t meter_height = layout.bottom_h;
     point_t meter_pos = { layout.horizontal_pad,