diff --git a/node/main/main.ino b/node/main/main.ino
index 07f2039..b23b2ae 100644
--- a/node/main/main.ino
+++ b/node/main/main.ino
@@ -59,18 +59,17 @@ void send_data(){
 	send.setDist(dist);
 	send.setTTL(MESSAGE_TTL);
 	char data[64] = {0};
-	strcpy(data, "https://git.xdrm.io");
+	sprintf(data, "%d has: dist %d / wave %d", SENDERID, dist, wave_id);
 	send.setData(data);
 
+	// 2. broadcast
+	xbee.broadcast(send);
+
 	// 2. debug
 	screen.clear();
 	screen.printfn(0, "msg[%3d/%3d] %3d", send.getDist(), send.getTTL(), send.getSize());
 	screen.printfn_overflow(1, "%s", (char*) send.getData());
-	delay(1000);
-
-	// 3. send
-	xbee.broadcast(send);
-	screen.printfn(1, "sent            ");
+	delay(500);
 }
 
 
@@ -129,11 +128,11 @@ void manage_message(){
 	}
 
 	// propagation
-	send.setOpcode(OPCODE_MESSAGE);
-	send.setTTL(recv.getTTL()-1);
-	send.setDist(dist);
-	send.setData(recv.getData());
+	// send.setOpcode(OPCODE_MESSAGE);
+	recv.setTTL(recv.getTTL()-1);
+	recv.setDist(dist);
+	// send.setData(recv.getData());
 
-	screen.printfn(1, "msg[%3d/%3d] %3d", send.getDist(), send.getTTL(), send.getSize());
-	xbee.broadcast(send);
+	screen.printfn(1, "msg[%3d/%3d] %3d", recv.getDist(), recv.getTTL(), recv.getSize());
+	xbee.broadcast(recv);
 }
diff --git a/protocol.h b/protocol.h
index 00046ee..b72c7c0 100644
--- a/protocol.h
+++ b/protocol.h
@@ -5,7 +5,7 @@
 
 	#define DISCOVER_TTL     5000
 	#define SENDERID         42
-	#define MESSAGE_TTL      10
+	#define MESSAGE_TTL      3
 
 	#define OPCODE_DISCOVER 0
 	#define OPCODE_MESSAGE  1