diff --git a/tracker/software/config.c b/tracker/software/config.c
index 62a1c50..57e256f 100644
--- a/tracker/software/config.c
+++ b/tracker/software/config.c
@@ -3,7 +3,7 @@
 #include "debug.h"
 
 module_conf_t config[9];
-uint8_t ssdv_buffer[65535] __attribute__((aligned(32)));
+uint8_t ssdv_buffer[256*1024] __attribute__((aligned(32)));
 
 /* 
  * Position module configuration description
@@ -50,7 +50,7 @@ uint8_t ssdv_buffer[65535] __attribute__((aligned(32)));
  *										- TRIG_NEW_POINT	Triggered when new track point available
  *										- TRIG_TIMEOUT		Triggered by timeout (e.g. trasmit position every 120sec)
  *										  this option requires trigger.timeout to be set
- *										- TRIG_CONTINOUSLY	Continue continously (e.g. send new image once old image sent completely)
+ *										- TRIG_CONTINUOUSLY	Continue continuously (e.g. send new image once old image sent completely)
  *
  * ============================== The following options are needed if protocol == PROT_APRS_AFSK or protocol == PROT_APRS_2GFSK ===============================
  *
@@ -173,12 +173,12 @@ void start_user_modules(void)
 	// Module POSITION, APRS 2m AFSK
 	config[0].power = 127;									// Power 20 dBm
 	config[0].protocol = PROT_APRS_AFSK;					// Protocol APRS, modulation AFSK
-	config[0].frequency.type = FREQ_STATIC;			// Dynamic frequency allocation
-	config[0].frequency.hz = 144390000;						// Default frequency 144.800 MHz
+	config[0].frequency.type = FREQ_APRS_REGION;			// Dynamic frequency allocation
+	config[0].frequency.hz = 144800000;						// Default frequency 144.800 MHz
 	config[0].init_delay = 0;								// Module startup delay in msec
 	config[0].trigger.type = TRIG_NEW_POINT;				// Trigger when new track point released
 	chsnprintf(config[0].aprs_conf.callsign, 7, "DL7AD");	// APRS Callsign
-	config[0].aprs_conf.ssid = 11;							// APRS SSID
+	config[0].aprs_conf.ssid = 12;							// APRS SSID
 	config[0].aprs_conf.symbol = SYM_BALLOON;				// APRS Symbol
 	chsnprintf(config[0].aprs_conf.path, 16, "WIDE1-1");	// APRS Path
 	config[0].aprs_conf.preamble = 300;						// APRS Preamble
@@ -190,7 +190,7 @@ void start_user_modules(void)
 	config[0].aprs_conf.tel_enc = TRUE;						// Transmit Telemetry encoding information activated
 	config[0].aprs_conf.tel_enc_cycle = 3600;				// Transmit Telemetry encoding information every 3600sec
 	chsnprintf(config[0].aprs_conf.tel_comment, 30, "http://ssdv.habhub.org/DL7AD");// Telemetry comment
-	//start_position_thread(&config[0]);
+	start_position_thread(&config[0]);
 
 	// Module POSITION, APRS 2m 2GFSK
 	/*config[1].power = 127;								// Power 10 dBm
@@ -234,23 +234,23 @@ void start_user_modules(void)
 	// Module IMAGE, APRS 2m AFSK low-duty cycle
 	config[3].power = 127;									// Power 20 dBm
 	config[3].protocol = PROT_APRS_AFSK;					// Protocol APRS SSDV, modulation AFSK
-	config[3].frequency.type = FREQ_STATIC;			// Dynamic frequency allocation
-	config[3].frequency.hz = 144390000;						// Transmission frequency 144.800 MHz
+	config[3].frequency.type = FREQ_APRS_REGION;			// Dynamic frequency allocation
+	config[3].frequency.hz = 144800000;						// Transmission frequency 144.800 MHz
 	config[3].init_delay = 0;								// Module startup delay in msec
-	//config[3].packet_spacing = 30000;						// Packet spacing in ms
+	config[3].packet_spacing = 30000;						// Packet spacing in ms
 	//config[3].sleep_conf.type = SLEEP_WHEN_ISOL_BELOW_THRES;
 	//config[3].sleep_conf.isol_thres = 3;
-	config[3].trigger.type = TRIG_TIMEOUT;					// Trigger transmission on timeout (Periodic cycling)
+	config[3].trigger.type = TRIG_CONTINUOUSLY;				// Continuous Trigger
 	config[3].trigger.timeout = 10;							// Timeout 10 sec
 	chsnprintf(config[3].aprs_conf.callsign, 7, "DL7AD");	// APRS Callsign
-	config[3].aprs_conf.ssid = 11;							// APRS SSID
+	config[3].aprs_conf.ssid = 12;							// APRS SSID
 	config[3].aprs_conf.preamble = 300;						// APRS Preamble
 	chsnprintf(config[3].ssdv_conf.callsign, 7, "DL7AD");	// SSDV Callsign
 	config[3].ssdv_conf.ram_buffer = ssdv_buffer;			// Camera buffer
 	config[3].ssdv_conf.ram_size = sizeof(ssdv_buffer);		// Buffer size
 	config[3].ssdv_conf.res = RES_QVGA;						// Resolution VGA
 	config[3].ssdv_conf.redundantTx = true;					// Transmit packets twice
-	//start_image_thread(&config[3]);
+	start_image_thread(&config[3]);
 
 	// Module POSITION, Morse 2m OOK
 	/*config[4].power = 127;								// Power 10 dBm
@@ -266,15 +266,15 @@ void start_user_modules(void)
 	start_position_thread(&config[4]);*/
 
 	// Module IMAGE, APRS 2m 2GFSK
-	config[5].power = 127;									// Power 20 dBm
+	config[5].power = 50;									// Power 20 dBm
 	config[5].protocol = PROT_APRS_2GFSK;					// Protocol APRS SSDV, modulation 2GFSK
 	config[5].gfsk_conf.speed = 9600;						// 2GFSK Speed
 	config[5].frequency.type = FREQ_STATIC;					// Static frequency allocation
 	config[5].frequency.hz = 144860000;						// Transmission frequency 144.860 MHz
 	//config[5].init_delay = 60000;							// Module startup delay in msec
-	config[5].sleep_conf.type = SLEEP_WHEN_VBAT_BELOW_THRES;
-	config[5].sleep_conf.vbat_thres = 4000;
-	config[5].trigger.type = TRIG_TIMEOUT;					// Trigger transmission on timeout (Periodic cycling)
+	//config[5].sleep_conf.type = SLEEP_WHEN_VBAT_BELOW_THRES;
+	//config[5].sleep_conf.vbat_thres = 4000;
+	config[5].trigger.type = TRIG_CONTINUOUSLY;					// Trigger transmission on timeout (Periodic cycling)
 	config[5].trigger.timeout = 30;							// Timeout 10 sec
 	chsnprintf(config[5].aprs_conf.callsign, 6, "DL7AD");	// APRS Callsign
 	config[5].aprs_conf.ssid = 12;							// APRS SSID
@@ -284,7 +284,7 @@ void start_user_modules(void)
 	config[5].ssdv_conf.ram_size = sizeof(ssdv_buffer);		// Buffer size
 	config[5].ssdv_conf.res = RES_VGA;						// Resolution XGA
 	//config[5].ssdv_conf.redundantTx = true;					// Transmit packets twice
-	start_image_thread(&config[5]);
+	//start_image_thread(&config[5]);
 
 	// Module IMAGE, SSDV 2m 2FSK
 	/*config[6].power = 127;								// Power 20 dBm
diff --git a/tracker/software/config.h b/tracker/software/config.h
index 327972c..75a3b31 100644
--- a/tracker/software/config.h
+++ b/tracker/software/config.h
@@ -15,13 +15,13 @@
 #define LOG_FLASH_ADDR2			0x080E0000	/* Log flash memory address 2 */
 #define LOG_SECTOR_SIZE			0x20000		/* Log flash memory size */
 
-#define GPS_ON_VBAT				0			/* Battery voltage threshold at which GPS is switched on */
-#define GPS_OFF_VBAT			0			/* Battery voltage threshold at which GPS is switched off */
+#define GPS_ON_VBAT				4000			/* Battery voltage threshold at which GPS is switched on */
+#define GPS_OFF_VBAT			3500			/* Battery voltage threshold at which GPS is switched off */
 
 #define TRACE_TIME				TRUE		/* Enables time tracing on debugging port */
 #define TRACE_FILE				TRUE		/* Enables file and line tracing on debugging port */
 
-#define RUN_3V					TRUE		/* Lets the tracker run a 3V otherwise 1.8V. 3V is needed to do 20dBm radio output power.
+#define RUN_3V					FALSE		/* Lets the tracker run a 3V otherwise 1.8V. 3V is needed to do 20dBm radio output power.
 											 * With 1.8V only 15dBm can be done. Some serial-USB adapters also need a 3V IO level in
 											 * order to work. However 3V takes a lot of power in idle. You can save energy using 1.8V. */
 
diff --git a/tracker/software/drivers/ov5640.c b/tracker/software/drivers/ov5640.c
index cc292ef..dfec8a1 100644
--- a/tracker/software/drivers/ov5640.c
+++ b/tracker/software/drivers/ov5640.c
@@ -70,7 +70,7 @@ static const struct regval_list OV5640YUV_Sensor_Dvp_Init[] =
 	{ 0x3c0a, 0x9c }, 
 	{ 0x3c0b, 0x40 },  		
 
-	{ 0x3820, 0x41 }, 
+	{ 0x3820, 0x46 }, 
 	{ 0x3821, 0x01 }, //07
 
 	//windows setup
@@ -96,7 +96,7 @@ static const struct regval_list OV5640YUV_Sensor_Dvp_Init[] =
 	{ 0x3034, 0x1a }, 
 	{ 0x3035, 0x11 }, //15fps
 	{ 0x3036, 0x46 }, 
-	{ 0x3037, 0x13 }, 
+	{ 0x3037, 0x14 }, 
 	{ 0x3038, 0x00 }, 
 	{ 0x3039, 0x00 }, 
 
@@ -331,7 +331,7 @@ static const struct regval_list ov5640_vga_preview[] =
 	{ 0x3035, 0x11 }, // PLL
 	{ 0x3036, 0x46 }, // PLL
 	{ 0x3c07, 0x08 }, // light meter 1 threshold [7:0]
-	{ 0x3820, 0x41 }, // Sensor flip off, ISP flip on
+	{ 0x3820, 0x46 }, // Sensor flip off, ISP flip on
 	{ 0x3821, 0x01 }, // Sensor mirror on, ISP mirror on, H binning on
 	{ 0x3814, 0x31 }, // X INC
 	{ 0x3815, 0x31 }, // Y INC
@@ -397,8 +397,8 @@ static const struct regval_list OV5640_RGB_QVGA[]  =
 //2592x1944 QSXGA
 static const struct regval_list OV5640_JPEG_QSXGA[]  =
 {
-	{0x3820 ,0x41}, 
-	{0x3821 ,0x26}, 
+	{0x3820 ,0x46}, 
+	{0x3821 ,0x20}, 
 	{0x3814 ,0x11}, 
 	{0x3815 ,0x11}, 
 	{0x3803 ,0x00}, 
diff --git a/tracker/software/mcuconf.h b/tracker/software/mcuconf.h
index 885ed41..63e57e5 100644
--- a/tracker/software/mcuconf.h
+++ b/tracker/software/mcuconf.h
@@ -48,9 +48,9 @@
 #define STM32_PLLN_VALUE                    192
 #define STM32_PLLP_VALUE                    4
 #define STM32_PLLQ_VALUE                    4
-#define STM32_HPRE                          STM32_HPRE_DIV1
+#define STM32_HPRE                          STM32_HPRE_DIV2
 #define STM32_PPRE1                         STM32_PPRE1_DIV2
-#define STM32_PPRE2                         STM32_PPRE2_DIV1
+#define STM32_PPRE2                         STM32_PPRE2_DIV4
 #define STM32_RTCSEL                        STM32_RTCSEL_LSI
 #define STM32_RTCPRE_VALUE                  8
 #define STM32_MCO1SEL                       STM32_MCO1SEL_HSE
diff --git a/tracker/software/sleep.c b/tracker/software/sleep.c
index 6c3c370..87eb410 100644
--- a/tracker/software/sleep.c
+++ b/tracker/software/sleep.c
@@ -48,7 +48,7 @@ systime_t waitForTrigger(systime_t prev, trigger_conf_t *config)
 		case TRIG_TIMEOUT: // Wait for specified timeout
 			return chThdSleepUntilWindowed(prev, prev + S2ST(config->timeout));
 
-		case TRIG_CONTINOUSLY: // Immediate trigger
+		case TRIG_CONTINUOUSLY: // Immediate trigger
 			return chVTGetSystemTimeX();
 
 		case TRIG_ONCE: // No trigger defined
diff --git a/tracker/software/types.h b/tracker/software/types.h
index 6781693..521e35b 100644
--- a/tracker/software/types.h
+++ b/tracker/software/types.h
@@ -131,7 +131,7 @@ typedef enum {
 	TRIG_ONCE,				// Trigger once and never again (e.g. transmit specific position packet only at startup)
 	TRIG_NEW_POINT,			// Triggered when new track point available
 	TRIG_TIMEOUT,			// Triggered by timeout (e.g. trasmit position every 120sec)
-	TRIG_CONTINOUSLY		// Continue continously (e.g. send new image once old image sent completely)
+	TRIG_CONTINUOUSLY		// Continue continuously (e.g. send new image once old image sent completely)
 } trigger_type_t;
 
 typedef struct {