diff --git a/src/cdextraprotocol.cpp b/src/cdextraprotocol.cpp
index d191e23..4708603 100644
--- a/src/cdextraprotocol.cpp
+++ b/src/cdextraprotocol.cpp
@@ -107,13 +107,13 @@ void CDextraProtocol::Task(void)
         }
         else if ( IsValidConnectPacket(Buffer, &Callsign, &ToLinkModule, &ProtRev) )
         {
-            std::cout << "DExtra connect packet for module " << ToLinkModule << " from " << Callsign << " at " << Ip << std::endl;
+            std::cout << "DExtra connect packet for module " << ToLinkModule << " from " << Callsign << " at " << Ip << " rev " << ProtRev << std::endl;
             
             // callsign authorized?
             if ( g_GateKeeper.MayLink(Callsign, Ip, PROTOCOL_DEXTRA) )
             {
                 // acknowledge the request
-                EncodeConnectAckPacket(&Buffer);
+                EncodeConnectAckPacket(&Buffer, ProtRev);
                 m_Socket.Send(Buffer, Ip);
                 
                 // create the client
@@ -293,6 +293,13 @@ bool CDextraProtocol::OnDvHeaderPacketIn(CDvHeaderPacket *Header, const CIp &Ip)
         {
             // get client callsign
             via = client->GetCallsign();
+            // apply protocol revision details
+            if ( client->GetProtocolRevision() == 2 )
+            {
+                // update Header RPT2 module letter with
+                // the module the client is linked to
+                Header->SetRpt2Module(client->GetReflectorModule());
+            }
             // and try to open the stream
             if ( (stream = g_Reflector.OpenStream(Header, client)) != NULL )
             {
@@ -334,6 +341,19 @@ bool CDextraProtocol::IsValidConnectPacket(const CBuffer &Buffer, CCallsign *cal
         *reflectormodule = Buffer.data()[9];
         *revision = (Buffer.data()[10] == 11) ? 1 : 0;
         valid = (callsign->IsValid() && IsLetter(*reflectormodule));
+        // detect revision
+        if ( (Buffer.data()[10] == 11) )
+        {
+            *revision = 1;
+        }
+        else if ( callsign->HasSameCallsignWithWidlcard(CCallsign("XRF*")) )
+        {
+            *revision = 2;
+        }
+        else
+        {
+            *revision = 0;
+        }
     }
     return valid;
 }
@@ -431,12 +451,10 @@ void CDextraProtocol::EncodeKeepAlivePacket(CBuffer *Buffer)
    Buffer->Set(GetReflectorCallsign());
 }
 
-void CDextraProtocol::EncodeConnectAckPacket(CBuffer *Buffer)
+void CDextraProtocol::EncodeConnectAckPacket(CBuffer *Buffer, int ProtRev)
 {
-    uint8 xrf[] = { 'X','R','F' };
-    
    // is it for a XRF or repeater
-    if ( Buffer->Compare(xrf, sizeof(xrf)) == 0 )
+    if ( ProtRev == 2 )
     {
         // XRFxxx
         uint8 rm = (Buffer->data())[8];
diff --git a/src/cdextraprotocol.h b/src/cdextraprotocol.h
index b73257f..3c623fc 100644
--- a/src/cdextraprotocol.h
+++ b/src/cdextraprotocol.h
@@ -33,6 +33,24 @@
 
 ////////////////////////////////////////////////////////////////////////////////////////
 
+// note on protocol revisions:
+//
+//  rev 0:
+//      this is standard protocol implementation
+//
+//  rev 1:
+//      this is specific UP4DAR umplementation
+//      the protocol is detected using byte(10) of connect packet (value is 11)
+//      the protocol require a specific non-standard disconnect acqknowleding packet
+//
+//  rev 2:
+//      this is specific to KI4KLF dxrfd reflector
+//      the protocol is detected by looking at "XRF" in connect packet callsign
+//      the protocol require a specific connect ack packet
+//      the protocol also implement a workaround for detecting stream's module
+//          as dxrfd soes not set DV header RPT2 properly.
+//      the protocol assumes that a dxrfd can only be linked to one module at a time
+
 
 ////////////////////////////////////////////////////////////////////////////////////////
 // class
@@ -72,7 +90,7 @@ protected:
     
     // packet encoding helpers
     void                EncodeKeepAlivePacket(CBuffer *);
-    void                EncodeConnectAckPacket(CBuffer *);
+    void                EncodeConnectAckPacket(CBuffer *, int);
     void                EncodeConnectNackPacket(CBuffer *);
     void                EncodeDisconnectPacket(CBuffer *);
     void                EncodeDisconnectedPacket(CBuffer *);
diff --git a/src/cdvheaderpacket.h b/src/cdvheaderpacket.h
index 6c80c80..26f0d17 100644
--- a/src/cdvheaderpacket.h
+++ b/src/cdvheaderpacket.h
@@ -93,6 +93,7 @@ public:
     
     // set callsigns
     void SetRpt2Callsign(const CCallsign &cs)       { m_csRPT2 = cs; }
+    void SetRpt2Module(char c)                      { m_csRPT2.SetModule(c); }
     
     // operators
     bool operator ==(const CDvHeaderPacket &) const;
diff --git a/src/main.h b/src/main.h
index be097f2..ab40281 100644
--- a/src/main.h
+++ b/src/main.h
@@ -48,7 +48,7 @@
 
 #define VERSION_MAJOR               1
 #define VERSION_MINOR               3
-#define VERSION_REVISION            4
+#define VERSION_REVISION            5
 
 // global ------------------------------------------------------