diff --git a/dvmconsole/Controls/ChannelBox.xaml.cs b/dvmconsole/Controls/ChannelBox.xaml.cs
index e8c4b05..4e58d4e 100644
--- a/dvmconsole/Controls/ChannelBox.xaml.cs
+++ b/dvmconsole/Controls/ChannelBox.xaml.cs
@@ -148,6 +148,11 @@ namespace dvmconsole.Controls
         /// </summary>
         public bool IsReceivingEncrypted { get; set; } = false;
 
+        /// <summary>
+        /// Flag indicating whether or not the console is transmitting with encryption.
+        /// </summary>
+        public bool IsTxEncrypted { get; set; } = false;
+
         /// <summary>
         /// Last Source ID received.
         /// </summary>
@@ -446,13 +451,27 @@ namespace dvmconsole.Controls
             VolumeSlider.IsEnabled = false;
         }
 
+        /// <summary>
+        /// Helper to hide the PTT button.
+        /// </summary>
+        public void HidePTTButton()
+        {
+            PttButton.IsEnabled = false;
+            PttButton.Visibility = Visibility.Hidden;
+        }
+
         /// <summary>
         /// 
         /// </summary>
         private void UpdatePTTColor()
         {
             if (PttState)
-                PttButton.Background = RED_GRADIENT;
+            {
+                if (IsTxEncrypted)
+                    PttButton.Background = ORANGE_GRADIENT;
+                else
+                    PttButton.Background = RED_GRADIENT;
+            }
             else
                 PttButton.Background = GRAY_GRADIENT;
         }
diff --git a/dvmconsole/MainWindow.xaml.cs b/dvmconsole/MainWindow.xaml.cs
index c780263..c828734 100644
--- a/dvmconsole/MainWindow.xaml.cs
+++ b/dvmconsole/MainWindow.xaml.cs
@@ -416,6 +416,8 @@ namespace dvmconsole
                     {
                         ChannelBox channelBox = new ChannelBox(selectedChannelsManager, audioManager, channel.Name, channel.System, channel.Tgid, settingsManager.TogglePTTMode);
                         channelBox.ChannelMode = channel.Mode.ToUpperInvariant();
+                        if (channel.GetAlgoId() != P25Defines.P25_ALGO_UNENCRYPT && channel.GetKeyId() > 0)
+                            channelBox.IsTxEncrypted = true;
 
                         systemStatuses.Add(channel.Name, new SlotStatus());
 
@@ -487,6 +489,7 @@ namespace dvmconsole
             // initialize the playback channel
             playbackChannelBox = new ChannelBox(selectedChannelsManager, audioManager, PLAYBACKCHNAME, PLAYBACKSYS, PLAYBACKTG);
             playbackChannelBox.ChannelMode = "Local";
+            playbackChannelBox.HidePTTButton(); // playback box shouldn't have PTT
 
             if (settingsManager.ChannelPositions.TryGetValue(PLAYBACKCHNAME, out var pos))
             {
@@ -499,7 +502,6 @@ namespace dvmconsole
                 Canvas.SetTop(playbackChannelBox, offsetY);
             }
 
-            playbackChannelBox.PTTButtonClicked += ChannelBox_PTTButtonClicked;
             playbackChannelBox.PageButtonClicked += ChannelBox_PageButtonClicked;
             playbackChannelBox.HoldChannelButtonClicked += ChannelBox_HoldChannelButtonClicked;