diff --git a/src/main/java/io/github/dsheirer/bits/BinaryMessage.java b/src/main/java/io/github/dsheirer/bits/BinaryMessage.java
index f2872447..341798e7 100644
--- a/src/main/java/io/github/dsheirer/bits/BinaryMessage.java
+++ b/src/main/java/io/github/dsheirer/bits/BinaryMessage.java
@@ -507,7 +507,7 @@ public class BinaryMessage extends BitSet
 
     /**
      * Indicates if the message field contains a non-zero value indicated by any bits set in the int field indices.
-     * @param intField to inspect
+     * @param fragmentedField to inspect
      * @return true if any of the bits are set, indicating a non-zero value.
      */
     public boolean hasInt(FragmentedIntField fragmentedField)
@@ -1057,14 +1057,14 @@ public class BinaryMessage extends BitSet
         if(get(start))
         {
             //Negative value - flip and add one
-            BinaryMessage fragment = getSubMessage(start, end);
+            BinaryMessage fragment = getSubMessage(start, end + 1);
             fragment.flip(0, fragment.size());
-            return fragment.getInt(1, fragment.size()) + 1;
+            return -(fragment.getInt(0, fragment.size() - 1) + 1);
         }
         else
         {
             //Positive value - return the contents.
-            return getInt(start + 1, end);
+            return getInt(start, end);
         }
     }
 
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/DMRDecoderState.java b/src/main/java/io/github/dsheirer/module/decode/dmr/DMRDecoderState.java
index 4b939c29..1d019c8d 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/DMRDecoderState.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/DMRDecoderState.java
@@ -1329,14 +1329,15 @@ public class DMRDecoderState extends TimeslotDecoderState
                 }
                 break;
             case FULL_STANDARD_GPS_INFO:
-                if(message instanceof GPSInformation gpsInformation)
+            case FULL_HYTERA_GPS_INFO:
+                if(message instanceof GPSInformation gps)
                 {
                     PlottableDecodeEvent plottableGPS = PlottableDecodeEvent.plottableBuilder(DecodeEventType.GPS, message.getTimestamp())
                             .channel(getCurrentChannel())
-                            .details("LOCATION:" + gpsInformation.getGPSLocation())
+                            .details("LOCATION:" + gps.getGPSLocation())
                             .identifiers(new IdentifierCollection(getIdentifierCollection().getIdentifiers()))
                             .protocol(Protocol.DMR)
-                            .location(gpsInformation.getPosition())
+                            .location(gps.getPosition())
                             .build();
 
                     broadcast(plottableGPS);
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/CSBKMessageFactory.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/CSBKMessageFactory.java
index 7d638cd3..9575de80 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/CSBKMessageFactory.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/CSBKMessageFactory.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -31,11 +31,12 @@ import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraAnnou
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraCsbko44;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraSmsAvailableNotification;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraTrafficChannelTalkerStatus;
+import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraXPTAdjacentSites;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraXPTPreamble;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera.HyteraXPTSiteState;
+import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityMaxAdvantageModeVoiceChannelUpdate;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityMaxAloha;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityMaxOpenModeVoiceChannelUpdate;
-import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityMaxAdvantageModeVoiceChannelUpdate;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityPlusCSBKO_60;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityPlusDataRevertWindowAnnouncement;
 import io.github.dsheirer.module.decode.dmr.message.data.csbk.motorola.CapacityPlusDataRevertWindowGrant;
@@ -246,6 +247,9 @@ public class CSBKMessageFactory
                 case HYTERA_68_XPT_SITE_STATE:
                     csbk = new HyteraXPTSiteState(pattern, message, cach, slotType, timestamp, timeslot);
                     break;
+                case HYTERA_68_XPT_ADJACENT_SITE:
+                    csbk = new HyteraXPTAdjacentSites(pattern, message, cach, slotType, timestamp, timeslot);
+                    break;
                 case HYTERA_08_ACKNOWLEDGE:
                     csbk = new Hytera08Acknowledge(pattern, message, cach, slotType, timestamp, timeslot);
                     break;
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/Opcode.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/Opcode.java
index 7e8b0f38..28d0af01 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/Opcode.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/Opcode.java
@@ -98,6 +98,8 @@ public enum Opcode
     HYTERA_08_TRAFFIC_CHANNEL_TALKER_STATUS(Vendor.HYTERA_8, 47, "HYTERA 08 CSBKO 47"),
 
     HYTERA_68_XPT_SITE_STATE(Vendor.HYTERA_68, 10, "HYTERA 68 XPT SITE STATE"),
+    HYTERA_68_XPT_ADJACENT_SITE(Vendor.HYTERA_68, 11, "HYTERA 68 XPT ADJACENT SITE"),
+
     HYTERA_68_ALOHA(Vendor.HYTERA_68, 25, "HYTERA 68 ALOHA"),
     HYTERA_68_ACKNOWLEDGE(Vendor.HYTERA_68, 32, "HYTERA 68 ACKNOWLEDGE"),
     HYTERA_68_ANNOUNCEMENT(Vendor.HYTERA_68, 40, "HYTERA 68 ANNOUNCEMENT"),
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTAdjacentSites.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTAdjacentSites.java
new file mode 100644
index 00000000..4db18381
--- /dev/null
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTAdjacentSites.java
@@ -0,0 +1,209 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2024 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.module.decode.dmr.message.data.csbk.hytera;
+
+import io.github.dsheirer.bits.CorrectedBinaryMessage;
+import io.github.dsheirer.identifier.Identifier;
+import io.github.dsheirer.module.decode.dmr.DMRSyncPattern;
+import io.github.dsheirer.module.decode.dmr.message.CACH;
+import io.github.dsheirer.module.decode.dmr.message.data.SlotType;
+import io.github.dsheirer.module.decode.dmr.message.data.csbk.CSBKMessage;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Hytera XPT - Adjacent Site State
+ */
+public class HyteraXPTAdjacentSites extends CSBKMessage
+{
+    private static final int[] SEQUENCE_NUMBER = new int[]{0, 1};
+    private static final int[] SITE_1 = new int[]{16, 17, 18, 19, 20}; //Unknown: 21-23
+    private static final int[] FREE_1 = new int[]{24, 25, 26, 27}; //Unknown: 28-31
+    private static final int[] SITE_2 = new int[]{32, 33, 34, 35, 36}; //Unknown: 37-39
+    private static final int[] FREE_2 = new int[]{40, 41, 42, 43}; //Unknown: 44-47
+    private static final int[] SITE_3 = new int[]{48, 49, 50, 51, 52}; //Unknown: 53-55
+    private static final int[] FREE_3 = new int[]{56, 57, 58, 59}; //Unknown: 60-63
+    private static final int[] SITE_4 = new int[]{64, 65, 66, 67, 68}; //Unknown: 69-71
+    private static final int[] FREE_4 = new int[]{72, 73, 74, 75}; //Unknown: 76-79
+
+    /**
+     * Constructs an instance
+     *
+     * @param syncPattern for the CSBK
+     * @param message bits
+     * @param cach for the DMR burst
+     * @param slotType for this message
+     * @param timestamp
+     * @param timeslot
+     */
+    public HyteraXPTAdjacentSites(DMRSyncPattern syncPattern, CorrectedBinaryMessage message, CACH cach, SlotType slotType, long timestamp, int timeslot)
+    {
+        super(syncPattern, message, cach, slotType, timestamp, timeslot);
+    }
+
+    @Override
+    public String toString()
+    {
+        StringBuilder sb = new StringBuilder();
+
+        if(!isValid())
+        {
+            sb.append("[CRC-ERROR] ");
+        }
+
+        sb.append("CC:").append(getSlotType().getColorCode());
+        if(hasRAS())
+        {
+            sb.append(" RAS:").append(getBPTCReservedBits());
+        }
+
+        sb.append(" HYTERA XPT NEIGHBORS");
+
+        if(hasSite1())
+        {
+            sb.append(" SITE:").append(getSite1());
+            sb.append(" FREE:").append(getFree1());
+        }
+
+        if(hasSite2())
+        {
+            sb.append(" SITE:").append(getSite2());
+            sb.append(" FREE:").append(getFree2());
+        }
+
+        if(hasSite3())
+        {
+            sb.append(" SITE:").append(getSite3());
+            sb.append(" FREE:").append(getFree3());
+        }
+
+        if(hasSite4())
+        {
+            sb.append(" SITE:").append(getSite4());
+            sb.append(" FREE:").append(getFree4());
+        }
+
+        sb.append(" MSG:").append(getMessage().toHexString());
+
+        return sb.toString();
+    }
+
+    /**
+     * Site ID for site number 1.
+     */
+    public int getSite1()
+    {
+        return getMessage().getInt(SITE_1);
+    }
+
+    /**
+     * Indicates if site number 1 is valid (ie non-zero).
+     */
+    public boolean hasSite1()
+    {
+        return getSite1() > 0;
+    }
+
+    /**
+     * Free repeater for site 1.
+     */
+    public int getFree1()
+    {
+        return getMessage().getInt(FREE_1);
+    }
+
+    /**
+     * Site ID for site number 2.
+     */
+    public int getSite2()
+    {
+        return getMessage().getInt(SITE_2);
+    }
+
+    /**
+     * Indicates if site number 2 is valid (ie non-zero).
+     */
+    public boolean hasSite2()
+    {
+        return getSite2() > 0;
+    }
+
+    /**
+     * Free repeater for site 2.
+     */
+    public int getFree2()
+    {
+        return getMessage().getInt(FREE_2);
+    }
+
+    /**
+     * Site ID for site number 3.
+     */
+    public int getSite3()
+    {
+        return getMessage().getInt(SITE_3);
+    }
+
+    /**
+     * Indicates if site number 3 is valid (ie non-zero).
+     */
+    public boolean hasSite3()
+    {
+        return getSite3() > 0;
+    }
+
+    /**
+     * Free repeater for site 3.
+     */
+    public int getFree3()
+    {
+        return getMessage().getInt(FREE_3);
+    }
+
+    /**
+     * Site ID for site number 4.
+     */
+    public int getSite4()
+    {
+        return getMessage().getInt(SITE_4);
+    }
+
+    /**
+     * Indicates if site number 4 is valid (ie non-zero).
+     */
+    public boolean hasSite4()
+    {
+        return getSite4() > 0;
+    }
+
+    /**
+     * Free repeater for site 4.
+     */
+    public int getFree4()
+    {
+        return getMessage().getInt(FREE_4);
+    }
+
+    @Override
+    public List<Identifier> getIdentifiers()
+    {
+        return Collections.emptyList();
+    }
+}
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTSiteState.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTSiteState.java
index 26d04c78..dc96bf4c 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTSiteState.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/csbk/hytera/HyteraXPTSiteState.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -237,7 +237,7 @@ public class HyteraXPTSiteState extends CSBKMessage
         {
             sb.append(" RAS:").append(getBPTCReservedBits());
         }
-        sb.append(" HYTERA XPT SITE ");
+        sb.append(" HYTERA XPT SITE");
 
         if(isAllChannelsBusy())
         {
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCMessageFactory.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCMessageFactory.java
index 18922ded..a65dd2c6 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCMessageFactory.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCMessageFactory.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -37,6 +37,7 @@ import io.github.dsheirer.module.decode.dmr.message.data.lc.full.UnknownFullLCMe
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.hytera.HyteraGroupVoiceChannelUser;
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.hytera.HyteraTerminator;
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.hytera.HyteraUnitToUnitVoiceChannelUser;
+import io.github.dsheirer.module.decode.dmr.message.data.lc.full.hytera.HyteraXptChannelGrant;
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.motorola.CapacityMaxTalkerAlias;
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.motorola.CapacityMaxTalkerAliasContinuation;
 import io.github.dsheirer.module.decode.dmr.message.data.lc.full.motorola.CapacityMaxVoiceChannelUser;
@@ -132,6 +133,7 @@ public class LCMessageFactory
                 flc = new UnitToUnitVoiceChannelUser(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_GPS_INFO:
+            case FULL_HYTERA_GPS_INFO:
                 flc = new GPSInformation(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_TERMINATOR_DATA:
@@ -169,17 +171,24 @@ public class LCMessageFactory
                 flc = new HyteraTerminator(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_TALKER_ALIAS_HEADER:
+            case FULL_HYTERA_TALKER_ALIAS_HEADER:
                 flc = new TalkerAliasHeader(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_1:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_1:
                 flc = new TalkerAliasBlock1(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_2:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_2:
                 flc = new TalkerAliasBlock2(message, timestamp, timeslot);
                 break;
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_3:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_3:
                 flc = new TalkerAliasBlock3(message, timestamp, timeslot);
                 break;
+            case FULL_HYTERA_XPT_CHANNEL_GRANT:
+                flc = new HyteraXptChannelGrant(message, timestamp, timeslot);
+                break;
             default:
                 flc = new UnknownFullLCMessage(message, timestamp, timeslot);
                 break;
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCOpcode.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCOpcode.java
index a90e33ac..f621d18b 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCOpcode.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/LCOpcode.java
@@ -62,6 +62,12 @@ public enum LCOpcode
 
     FULL_HYTERA_GROUP_VOICE_CHANNEL_USER(Vendor.HYTERA_68, true, 0, "HYTERA GROUP VOICE CHANNEL USER"),
     FULL_HYTERA_UNIT_TO_UNIT_VOICE_CHANNEL_USER(Vendor.HYTERA_68, true, 3, "HYTERA UNIT-TO-UNIT VOICE CHANNEL USER"),
+    FULL_HYTERA_TALKER_ALIAS_HEADER(Vendor.HYTERA_68,true, 4, "HYTERA TALKER ALIAS HEADER"),
+    FULL_HYTERA_TALKER_ALIAS_BLOCK_1(Vendor.HYTERA_68,true, 5, "HYTERA TALKER ALIAS BLOCK 1"),
+    FULL_HYTERA_TALKER_ALIAS_BLOCK_2(Vendor.HYTERA_68,true, 6, "HYTERA TALKER ALIAS BLOCK 2"),
+    FULL_HYTERA_TALKER_ALIAS_BLOCK_3(Vendor.HYTERA_68,true, 7, "HYTERA TALKER ALIAS BLOCK 3"),
+    FULL_HYTERA_GPS_INFO(Vendor.HYTERA_68,true, 8, "HYTERA GPS INFO"),
+    FULL_HYTERA_XPT_CHANNEL_GRANT(Vendor.HYTERA_68, true, 9, "HYTERA XPT CHANNEL GRANT"),
     FULL_HYTERA_TERMINATOR(Vendor.HYTERA_68, true, 48, "HYTERA TERMINATOR"),
 
     SHORT_STANDARD_NULL_MESSAGE(Vendor.STANDARD,false,0, "NULL MESSAGE"),
@@ -82,7 +88,9 @@ public enum LCOpcode
     SHORT_STANDARD_UNKNOWN(Vendor.STANDARD,false,-1, "UNKNOWN");
 
     private static final EnumSet<LCOpcode> TALKER_ALIAS_OPCODES = EnumSet.of(FULL_STANDARD_TALKER_ALIAS_HEADER,
-            FULL_STANDARD_TALKER_ALIAS_BLOCK_1, FULL_STANDARD_TALKER_ALIAS_BLOCK_2, FULL_STANDARD_TALKER_ALIAS_BLOCK_3);
+            FULL_STANDARD_TALKER_ALIAS_BLOCK_1, FULL_STANDARD_TALKER_ALIAS_BLOCK_2, FULL_STANDARD_TALKER_ALIAS_BLOCK_3,
+            FULL_HYTERA_TALKER_ALIAS_HEADER, FULL_HYTERA_TALKER_ALIAS_BLOCK_1, FULL_HYTERA_TALKER_ALIAS_BLOCK_2,
+            FULL_HYTERA_TALKER_ALIAS_BLOCK_3);
 
     private final Vendor mVendor;
     private final boolean mFull;
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/GPSInformation.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/GPSInformation.java
index 823aee98..8d91a1fd 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/GPSInformation.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/GPSInformation.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,6 +19,7 @@
 
 package io.github.dsheirer.module.decode.dmr.message.data.lc.full;
 
+import io.github.dsheirer.bits.BinaryMessage;
 import io.github.dsheirer.bits.CorrectedBinaryMessage;
 import io.github.dsheirer.identifier.Identifier;
 import io.github.dsheirer.identifier.location.LocationIdentifier;
@@ -67,9 +68,10 @@ public class GPSInformation extends FullLCMessage
             sb.append("[CRC-ERROR] ");
         }
 
-        sb.append("GPS LOCATION ");
+        sb.append("FLC GPS LOCATION ");
         sb.append(getGPSLocation().toString());
         sb.append(" POSITION ERROR:").append(getPositionError().toString());
+        sb.append(" MSG:").append(getMessage().toHexString());
         return sb.toString();
     }
 
@@ -130,4 +132,11 @@ public class GPSInformation extends FullLCMessage
 
         return mIdentifiers;
     }
+
+    public static void main(String[] args)
+    {
+        CorrectedBinaryMessage cbm = new CorrectedBinaryMessage(BinaryMessage.loadHex("08000F8A177E3903C230"));
+        GPSInformation gps = new GPSInformation(cbm, 0, 1);
+        System.out.println(gps);
+    }
 }
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasAssembler.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasAssembler.java
index 1629b59d..91c7d8df 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasAssembler.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasAssembler.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -83,6 +83,7 @@ public class TalkerAliasAssembler
         switch(message.getOpcode())
         {
             case FULL_STANDARD_TALKER_ALIAS_HEADER:
+            case FULL_HYTERA_TALKER_ALIAS_HEADER:
                 if(message instanceof TalkerAliasHeader tah)
                 {
                     if(message.getTimeslot() == 1)
@@ -99,6 +100,7 @@ public class TalkerAliasAssembler
                     }
                 }
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_1:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_1:
                 if(message instanceof TalkerAliasBlock1 tab1)
                 {
                     if(message.getTimeslot() == 1)
@@ -115,6 +117,7 @@ public class TalkerAliasAssembler
                     }
                 }
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_2:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_2:
                 if(message instanceof TalkerAliasBlock2 tab2)
                 {
                     if(message.getTimeslot() == 1)
@@ -131,6 +134,7 @@ public class TalkerAliasAssembler
                     }
                 }
             case FULL_STANDARD_TALKER_ALIAS_BLOCK_3:
+            case FULL_HYTERA_TALKER_ALIAS_BLOCK_3:
                 if(message instanceof TalkerAliasBlock3 tab3)
                 {
                     if(message.getTimeslot() == 1)
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasHeader.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasHeader.java
index 0a043325..39952c81 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasHeader.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/TalkerAliasHeader.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -70,6 +70,9 @@ public class TalkerAliasHeader extends FullLCMessage
      */
     public int getTotalBitLength()
     {
+        TalkerAliasDataFormat format = getFormat();
+        int bitsPerCharacter = format.getBitsPerCharacter();
+        int characterLength = getCharacterLength();
         int total = getFormat().getBitsPerCharacter() * getCharacterLength();
 
         //Max payload bit length is 217 (49 + 56 + 56 + 56)
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/hytera/HyteraXptChannelGrant.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/hytera/HyteraXptChannelGrant.java
new file mode 100644
index 00000000..b3d3552c
--- /dev/null
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/data/lc/full/hytera/HyteraXptChannelGrant.java
@@ -0,0 +1,119 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2024 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.module.decode.dmr.message.data.lc.full.hytera;
+
+import io.github.dsheirer.bits.CorrectedBinaryMessage;
+import io.github.dsheirer.identifier.Identifier;
+import io.github.dsheirer.identifier.radio.RadioIdentifier;
+import io.github.dsheirer.identifier.talkgroup.TalkgroupIdentifier;
+import io.github.dsheirer.module.decode.dmr.identifier.DMRRadio;
+import io.github.dsheirer.module.decode.dmr.identifier.DMRTalkgroup;
+import io.github.dsheirer.module.decode.dmr.message.data.lc.full.FullLCMessage;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Hytera XPT Channel Grant
+ *
+ * 49 68 50 100034 002AF9 1A770C
+ */
+public class HyteraXptChannelGrant extends FullLCMessage
+{
+    private static final int[] CHANNEL = new int[]{16, 17, 18, 19};
+    //Unknown: 20-23
+    private static final int[] TARGET = new int[]{24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
+    private static final int[] SOURCE = new int[]{48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71};
+
+    private RadioIdentifier mSourceRadio;
+    private TalkgroupIdentifier mTalkgroup;
+    private List<Identifier> mIdentifiers;
+
+    /**
+     * Constructs an instance.
+     *
+     * @param message for the link control payload
+     */
+    public HyteraXptChannelGrant(CorrectedBinaryMessage message, long timestamp, int timeslot)
+    {
+        super(message, timestamp, timeslot);
+    }
+
+    @Override
+    public String toString()
+    {
+        StringBuilder sb = new StringBuilder();
+
+        if(!isValid())
+        {
+            sb.append("[CRC-ERROR] ");
+        }
+
+        sb.append("FLC HYTERA XPT CHANNEL GRANT FM:");
+        sb.append(getSourceRadio());
+        sb.append(" TO:").append(getTalkgroup());
+        sb.append(" CHANNEL:").append(getChannel());
+        sb.append(" MSG:").append(getMessage().toHexString());
+        return sb.toString();
+    }
+
+    public int getChannel()
+    {
+        return getMessage().getInt(CHANNEL);
+    }
+
+    /**
+     * Talkgroup address
+     */
+    public TalkgroupIdentifier getTalkgroup()
+    {
+        if(mTalkgroup == null)
+        {
+            mTalkgroup = DMRTalkgroup.create(getMessage().getInt(TARGET));
+        }
+
+        return mTalkgroup;
+    }
+
+    /**
+     * Source radio address
+     */
+    public RadioIdentifier getSourceRadio()
+    {
+        if(mSourceRadio == null)
+        {
+            mSourceRadio = DMRRadio.createFrom(getMessage().getInt(SOURCE));
+        }
+
+        return mSourceRadio;
+    }
+
+    @Override
+    public List<Identifier> getIdentifiers()
+    {
+        if(mIdentifiers == null)
+        {
+            mIdentifiers = new ArrayList<>();
+            mIdentifiers.add(getTalkgroup());
+            mIdentifiers.add(getSourceRadio());
+        }
+
+        return mIdentifiers;
+    }
+}
diff --git a/src/main/java/io/github/dsheirer/module/decode/dmr/message/type/PositionError.java b/src/main/java/io/github/dsheirer/module/decode/dmr/message/type/PositionError.java
index 89f4e42c..5b366fcd 100644
--- a/src/main/java/io/github/dsheirer/module/decode/dmr/message/type/PositionError.java
+++ b/src/main/java/io/github/dsheirer/module/decode/dmr/message/type/PositionError.java
@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- *  Copyright (C) 2014-2020 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -33,7 +33,7 @@ public enum PositionError
     ERROR_4("LESS THAN 20 KILOMETERS"),
     ERROR_5("LESS THAN 200 KILOMETERS"),
     ERROR_6("MORE THAN 200 KILOMETERS"),
-    UNKNOWN("UNKNOWN");
+    UNKNOWN("NOT KNOWN");
 
     private String mLabel;