diff --git a/src/p25_lcw.c b/src/p25_lcw.c
index 99fc609..165663a 100644
--- a/src/p25_lcw.c
+++ b/src/p25_lcw.c
@@ -93,7 +93,9 @@ void p25_lcw (dsd_opts * opts, dsd_state * state, uint8_t LCW_bits[], uint8_t ir
 
       }
 
-      //uses explicit bit?
+      //TODO: Allow Tuning from Call Grants either in LDU1 or TDULC? (TDMA to p1 fallback?)
+      //TODO: Allow TG Hold overrides here  either in LDU1 or TDULC?
+      //NOTE: If we have an active TG hold, we really should't be here anyways
       else if (lc_format == 0x42) //is this group only, or group and private?
       {
         fprintf (stderr, " Group Voice Channel Update - ");
diff --git a/src/p25p1_mdpu.c b/src/p25p1_mdpu.c
index 804eea2..1ed1588 100644
--- a/src/p25p1_mdpu.c
+++ b/src/p25p1_mdpu.c
@@ -322,6 +322,9 @@ void processMPDU(dsd_opts * opts, dsd_state * state)
         }
       }
 
+      //TG hold on P25p1 Ext -- block non-matching target, allow matching group
+      if (state->tg_hold != 0 && state->tg_hold != group) sprintf (mode, "%s", "B");
+      if (state->tg_hold != 0 && state->tg_hold == group) sprintf (mode, "%s", "A");
       
       //Skip tuning group calls if group calls are disabled
       if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
@@ -421,6 +424,9 @@ void processMPDU(dsd_opts * opts, dsd_state * state)
         }
       }
 
+      //TG hold on P25p1 Ext UU -- may not be ideal/feasible to use these on private calls
+      // if (state->tg_hold != 0 && state->tg_hold != target) sprintf (mode, "%s", "B");
+      // if (state->tg_hold != 0 && state->tg_hold == target) sprintf (mode, "%s", "A");
       
       //Skip tuning private calls if group calls are disabled
       if (opts->trunk_tune_private_calls == 0) goto SKIPCALL;
@@ -539,6 +545,9 @@ void processMPDU(dsd_opts * opts, dsd_state * state)
           }
         }
 
+        //TG hold on MFID90 GRG -- block non-matching target, allow matching group
+        if (state->tg_hold != 0 && state->tg_hold != group) sprintf (mode, "%s", "B");
+        if (state->tg_hold != 0 && state->tg_hold == group) sprintf (mode, "%s", "A");
         
         //Skip tuning group calls if group calls are disabled
         if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
diff --git a/src/p25p1_tsbk.c b/src/p25p1_tsbk.c
index cebc757..4bebea9 100644
--- a/src/p25p1_tsbk.c
+++ b/src/p25p1_tsbk.c
@@ -214,6 +214,10 @@ void processTSBK(dsd_opts * opts, dsd_state * state)
           }
         }
 
+        //TG hold on MFID90 GRG -- block non-matching target, allow matching group
+        if (state->tg_hold != 0 && state->tg_hold != group) sprintf (mode, "%s", "B");
+        if (state->tg_hold != 0 && state->tg_hold == group) sprintf (mode, "%s", "A");
+
         //Skip tuning group calls if group calls are disabled
         if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
 
@@ -309,6 +313,9 @@ void processTSBK(dsd_opts * opts, dsd_state * state)
             }
           }
 
+          //TG hold on MFID90 GRG -- block non-matching target, allow matching group
+          if (state->tg_hold != 0 && state->tg_hold != tempg) sprintf (mode, "%s", "B");
+          if (state->tg_hold != 0 && state->tg_hold == tempg) sprintf (mode, "%s", "A");
 
           //Skip tuning group calls if group calls are disabled
           if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
diff --git a/src/p25p2_vpdu.c b/src/p25p2_vpdu.c
index b23fa87..d42bcf0 100644
--- a/src/p25p2_vpdu.c
+++ b/src/p25p2_vpdu.c
@@ -115,6 +115,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 				}
 			}
 
+			//TG hold on MFID90 GRG -- block non-matching super group, allow matching group
+			if (state->tg_hold != 0 && state->tg_hold != sgroup) sprintf (mode, "%s", "B");
+			if (state->tg_hold != 0 && state->tg_hold == sgroup)
+			{
+				sprintf (mode, "%s", "A");
+				opts->p25_is_tuned = 0; //unlock tuner
+			}
+
 			//Skip tuning group calls if group calls are disabled
 			if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
 
@@ -193,6 +201,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 				}
 			}
 
+			//TG hold on MFID90 GRG -- block non-matching super group, allow matching group
+			if (state->tg_hold != 0 && state->tg_hold != sgroup) sprintf (mode, "%s", "B");
+			if (state->tg_hold != 0 && state->tg_hold == sgroup)
+			{
+				sprintf (mode, "%s", "A");
+				opts->p25_is_tuned = 0; //unlock tuner
+			}
+
 			//Skip tuning group calls if group calls are disabled
 			if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
 
@@ -305,6 +321,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 					}
 				}
 
+				//TG hold on MFID90 GRG -- block non-matching super group, allow matching group
+				if (state->tg_hold != 0 && state->tg_hold != tunable_group) sprintf (mode, "%s", "B");
+				if (state->tg_hold != 0 && state->tg_hold == tunable_group)
+				{
+					sprintf (mode, "%s", "A");
+					opts->p25_is_tuned = 0; //unlock tuner
+				}
+
 				//check to see if the group candidate is blocked first
 				if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0)) //DE is digital encrypted, B is block
 				{
@@ -402,6 +426,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 				}
 			}
 
+			//TG hold on GRP_V -- block non-matching group, allow matching group
+			if (state->tg_hold != 0 && state->tg_hold != group) sprintf (mode, "%s", "B");
+			if (state->tg_hold != 0 && state->tg_hold == group)
+			{
+				sprintf (mode, "%s", "A");
+				opts->p25_is_tuned = 0; //unlock tuner
+			}
+
 			//Skip tuning group calls if group calls are disabled
 			if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;
 
@@ -493,6 +525,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 				}
 			}
 
+			//TG hold on UU_V -- may not want to allow these in case of TG and RID both are same
+			// if (state->tg_hold != 0 && state->tg_hold != target) sprintf (mode, "%s", "B");
+			// if (state->tg_hold != 0 && state->tg_hold == target)
+			// {
+			// 	sprintf (mode, "%s", "A");
+			// 	opts->p25_is_tuned = 0; //unlock tuner
+			// }
+
 			//tune if tuning available
 			if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0))
 			{
@@ -641,6 +681,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 					}
 				}
 
+				//TG hold on GRP_V Multi -- block non-matching group, allow matching group
+				if (state->tg_hold != 0 && state->tg_hold != tunable_group) sprintf (mode, "%s", "B");
+				if (state->tg_hold != 0 && state->tg_hold == tunable_group)
+				{
+					sprintf (mode, "%s", "A");
+					opts->p25_is_tuned = 0; //unlock tuner
+				}
+
 				//tune if tuning available
 				if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0))
 				{
@@ -810,6 +858,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 					}
 				}
 
+				//TG hold on GRP_V Multi -- block non-matching group, allow matching group
+				if (state->tg_hold != 0 && state->tg_hold != tunable_group) sprintf (mode, "%s", "B");
+				if (state->tg_hold != 0 && state->tg_hold == tunable_group)
+				{
+					sprintf (mode, "%s", "A");
+					opts->p25_is_tuned = 0; //unlock tuner
+				}
+
 				//check to see if the group candidate is blocked first
 				if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0)) //DE is digital encrypted, B is block
 				{
@@ -924,6 +980,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 					}
 				}
 
+				//TG hold on GRP_V Multi -- block non-matching group, allow matching group
+				if (state->tg_hold != 0 && state->tg_hold != tunable_group) sprintf (mode, "%s", "B");
+				if (state->tg_hold != 0 && state->tg_hold == tunable_group)
+				{
+					sprintf (mode, "%s", "A");
+					opts->p25_is_tuned = 0; //unlock tuner
+				}
+
 				//check to see if the group candidate is blocked first
 				if (opts->p25_trunk == 1 && (strcmp(mode, "DE") != 0) && (strcmp(mode, "B") != 0)) //DE is digital encrypted, B is block
 				{
@@ -1024,6 +1088,14 @@ void process_MAC_VPDU(dsd_opts * opts, dsd_state * state, int type, unsigned lon
 				}
 			}
 
+			//TG hold on GRP_V Exp -- block non-matching group, allow matching group
+			if (state->tg_hold != 0 && state->tg_hold != group) sprintf (mode, "%s", "B");
+			if (state->tg_hold != 0 && state->tg_hold == group)
+			{
+				sprintf (mode, "%s", "A");
+				opts->p25_is_tuned = 0; //unlock tuner
+			}
+
 			//Skip tuning group calls if group calls are disabled
 			if (opts->trunk_tune_group_calls == 0) goto SKIPCALL;