diff --git a/master/master/config.h b/master/master/config.h
--- a/master/master/config.h
+++ b/master/master/config.h
@@ -81,7 +81,7 @@
 // --------------------------------------------------------------------------
 
 // TX delay in milliseconds
-#define TX_DELAY      300
+#define TX_DELAY      500
 
 // Maximum packet delay
 #define MAX_PACKET_LEN 512  // bytes
@@ -118,7 +118,7 @@
 #define APRS_COMMENT    "CU HAB TEST"
 
 // Transmit the APRS sentence every X milliseconds
-#define APRS_TRANSMIT_PERIOD 10000
+#define APRS_TRANSMIT_PERIOD 30000
 
 
 // --------------------------------------------------------------------------
diff --git a/master/master/lib/aprs.c b/master/master/lib/aprs.c
--- a/master/master/lib/aprs.c
+++ b/master/master/lib/aprs.c
@@ -47,7 +47,8 @@ void aprs_send()
   ax25_send_header(addresses, sizeof(addresses)/sizeof(addresses[0]));
   ax25_send_byte('/');                // Report w/ timestamp, no APRS messaging. $ = NMEA raw data
   // ax25_send_string("021709z");     // 021709z = 2nd day of the month, 17:09 zulu (UTC/GMT)
-  ax25_send_string(get_timestamp());         // 170915 = 17h:09m:15s zulu (not allowed in Status Reports)
+  ax25_send_string(get_dayofmonth()); ///! Needs to be day hour minute        // 170915 = 17h:09m:15s zulu (not allowed in Status Reports)
+  ax25_send_string(get_timestamp()); 
   ax25_send_byte('z'); // zulu time. h for nonzulu
   ax25_send_string(get_latitude());     // Lat: 38deg and 22.20 min (.20 are NOT seconds, but 1/100th of minutes)
   ax25_send_byte('N');
diff --git a/master/master/lib/serial.c b/master/master/lib/serial.c
--- a/master/master/lib/serial.c
+++ b/master/master/lib/serial.c
@@ -39,6 +39,8 @@ void serial0_setup() {
 
 
 
+
+
 void serial1_setup() {
 //PROVEN in test project
 
@@ -54,6 +56,15 @@ void serial1_setup() {
 	UCSR1B |= (1 << RXCIE1); // Enable interrupt
 }
 
+void serial1_ion() {
+	UCSR1B |= (1<<RXEN1); // Enable rx
+	UCSR1B |= (1 << RXCIE1); // Enable interrupt
+}
+void serial1_ioff() {
+	UCSR1B &= ~(1<<RXEN1); // Disable rx
+	UCSR1B &= ~(1 << RXCIE1); // Disable interrupt
+}
+
 void serial0_sendChar( unsigned char byte )
 {
 	while (!(UCSR0A & (1<<UDRE0)));
diff --git a/master/master/lib/serial.h b/master/master/lib/serial.h
--- a/master/master/lib/serial.h
+++ b/master/master/lib/serial.h
@@ -31,5 +31,7 @@ void serial1_sendString(const char* stri
 void serial_sendCommand( char moduleID, char sensorID, char* data );
 void serial_sendResponseData();
 
+void serial1_ion();
+void serial1_ioff();
 
 #endif /* SERIAL_H_ */
\ No newline at end of file
diff --git a/master/master/lib/trackuinoGPS/gpsMKa.c b/master/master/lib/trackuinoGPS/gpsMKa.c
--- a/master/master/lib/trackuinoGPS/gpsMKa.c
+++ b/master/master/lib/trackuinoGPS/gpsMKa.c
@@ -92,7 +92,11 @@ char* get_course() {
 	return course;
 }
 	
-char datestamp[9];	//ddmmyy
+char dayofmonth[9];	//ddmmyy
+char* get_dayofmonth() {
+	return dayofmonth;
+}
+
 char variation[9];	//xxx.xb
 int calculatedChecksum;
 int receivedChecksum;
@@ -241,7 +245,7 @@ void parse_gps_transmission(void){
 		{
 			if (byte == ',') //end of this data type
 			{
-				timestamp[6] = 0x00; // Cut off at 6 for APRS
+				timestamp[4] = 0x00; // Cut off at 4 (no seconds) for APRS
 				setParserState(GGA_LATITUDE);
 				skipBytes = 0; //prep for next phase of parse
 				numBytes = 0;
@@ -610,7 +614,8 @@ void parse_gps_transmission(void){
 		{
 			if (byte == ',') //end of this data type
 			{
-				datestamp[numBytes] = 0x00;
+				// Cut it off at day of month. Also has month and year if we ever need it.
+				dayofmonth[2] = 0x00;
 				setParserState(RMC_MAG_VARIATION);
 				skipBytes = 0; //prep for next phase of parse
 				numBytes = 0;
@@ -618,7 +623,7 @@ void parse_gps_transmission(void){
 			else //store data
 			{
 				setParserState(RMC_DATE);
-				datestamp[numBytes] = byte; //adjust number of bytes to fit array
+				dayofmonth[numBytes] = byte; //adjust number of bytes to fit array
 				numBytes++;
 			}
 		}
diff --git a/master/master/lib/trackuinoGPS/gpsMKa.h b/master/master/lib/trackuinoGPS/gpsMKa.h
--- a/master/master/lib/trackuinoGPS/gpsMKa.h
+++ b/master/master/lib/trackuinoGPS/gpsMKa.h
@@ -19,5 +19,6 @@ char* get_speedKnots();
 char* get_course();
 char* get_hdop();
 char* getNumSatelites();
+char* get_dayofmonth();
 
 #endif /* GPSMKA_H_ */
\ No newline at end of file
diff --git a/master/master/master.c b/master/master/master.c
--- a/master/master/master.c
+++ b/master/master/master.c
@@ -78,6 +78,7 @@ int main(void)
 	
 	uint8_t ctr = 0;
 	void spin() {
+		
 		if(ctr == 0) {
 			led_on(LED_ACT0);
 			led_off(LED_ACT1);
@@ -105,12 +106,17 @@ int main(void)
 		ctr = (ctr + 1) % 4;
 	}
 	
+	serial1_ioff();
+	
 	while(1)
     {
 		
 		// Periodic: LED execution indicator
 		if(time_millis() - lastLedCycle > LEDCYCLE_RATE) {
 			spin();
+			
+			if(!afsk_busy())
+				serial1_ion();
 			lastLedCycle = time_millis();	
 		}
 		
@@ -119,6 +125,7 @@ int main(void)
 		{
 			led_on(LED_CYCLE);
 			
+			
 			// Print out GPS debug
 			snprintf(debugBuf, 128, "GPS> time: %s lat: %s lon: %s speed: %s hdop: %s course: %s\r\n",
 			get_timestamp(),get_latitude(),get_longitude(),get_speedKnots(),get_hdop(), get_course());
@@ -142,6 +149,7 @@ int main(void)
 		if(time_millis() - lastAprsBroadcast > APRS_TRANSMIT_PERIOD) 
 		{
 			while(afsk_busy());
+			serial1_ioff();
 			aprs_send(); // non-blocking
 			
 			//serial0_sendString("Initiating APRS transmission...\r\n");