diff --git a/src/host/dmr/Slot.cpp b/src/host/dmr/Slot.cpp
index af460581..8d41c516 100644
--- a/src/host/dmr/Slot.cpp
+++ b/src/host/dmr/Slot.cpp
@@ -723,6 +723,11 @@ void Slot::clock()
             if (!s_authoritative && m_permittedDstId != 0U) {
                 m_permittedDstId = 0U;
             }
+
+            // has the talkgroup hang timer expired while the modem is in a non-listening state?
+            if (m_rfState != RS_RF_LISTENING) {
+                processFrameLoss(RF_LOSS_TYPE_TG_HANG_NOT_LISTENING);
+            }
         }
     }
 
diff --git a/src/host/nxdn/Control.cpp b/src/host/nxdn/Control.cpp
index 384c2eb4..5dad4c40 100644
--- a/src/host/nxdn/Control.cpp
+++ b/src/host/nxdn/Control.cpp
@@ -684,6 +684,11 @@ void Control::clock()
             if (!m_authoritative && m_permittedDstId != 0U) {
                 m_permittedDstId = 0U;
             }
+
+            // has the talkgroup hang timer expired while the modem is in a non-listening state?
+            if (m_rfState != RS_RF_LISTENING) {
+                processFrameLoss(RF_LOSS_TYPE_TG_HANG_NOT_LISTENING);
+            }
         }
     }