diff --git a/platformio.ini b/platformio.ini
index 9f841819..a4499620 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -7,7 +7,7 @@
 
 ; ---> SELECT THE TARGET PLATFORM HERE! <---
 [board]
-;halfile = generic.h
+halfile = generic.h
 ;halfile = ebox.h
 ;halfile = eboxtube.h
 ;halfile = ecopower.h
@@ -18,7 +18,7 @@
 ;halfile = ttgov21old.h
 ;halfile = ttgov21new.h
 ;halfile = ttgofox.h
-halfile = ttgobeam.h
+;halfile = ttgobeam.h
 ;halfile = fipy.h
 ;halfile = lopy.h
 ;halfile = lopy4.h
@@ -81,7 +81,7 @@ lib_deps_all =
 build_flags_basic =
     -include "src/hal/${board.halfile}"
     -include "src/paxcounter.conf"
-    ;-w
+    -w
     '-DCORE_DEBUG_LEVEL=${common.debug_level}'
     '-DLOG_LOCAL_LEVEL=${common.debug_level}'
     '-DPROGVERSION="${common.release_version}"'
diff --git a/src/TTN/packed_decoder.js b/src/TTN/packed_decoder.js
index f1bf2c73..6db312a4 100644
--- a/src/TTN/packed_decoder.js
+++ b/src/TTN/packed_decoder.js
@@ -20,11 +20,11 @@ function Decoder(bytes, port) {
         }
         // combined wifi counter and gps data
         if (bytes.length === 15) {
-            return decode(bytes, [uint16, latLng, latLng, uint8, hdop, uint16], ['wifi', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+            return decode(bytes, [uint16, latLng, latLng, uint8, hdop, altitude], ['wifi', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
         }
         // combined wifi + ble counter and gps data
         if (bytes.length === 17) {
-            return decode(bytes, [uint16, uint16, latLng, latLng, uint8, hdop, uint16], ['wifi', 'ble', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+            return decode(bytes, [uint16, uint16, latLng, latLng, uint8, hdop, altitude], ['wifi', 'ble', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
         }
     }
 
@@ -42,7 +42,7 @@ function Decoder(bytes, port) {
 
     if (port === 4) {
         // gps data      
-        return decode(bytes, [latLng, latLng, uint8, hdop, uint16], ['latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+        return decode(bytes, [latLng, latLng, uint8, hdop, altitude], ['latitude', 'longitude', 'sats', 'hdop', 'altitude']);
     }
 
     if (port === 5) {
@@ -147,6 +147,18 @@ var hdop = function (bytes) {
 };
 hdop.BYTES = 2;
 
+var altitude = function (bytes) {
+    if (bytes.length !== altitude.BYTES) {
+        throw new Error('Altitude must have exactly 2 bytes');
+    }
+    var alt = bytesToInt(bytes);
+    if (alt > 32767) {
+        alt -= 65536;
+    }
+    return alt;
+};
+altitude.BYTES = 2;
+
 var float = function (bytes) {
     if (bytes.length !== float.BYTES) {
         throw new Error('Float must have exactly 2 bytes');
@@ -253,6 +265,7 @@ if (typeof module === 'object' && typeof module.exports !== 'undefined') {
         pressure: pressure,
         latLng: latLng,
         hdop: hdop,
+        altitude: altitude,
         bitmap1: bitmap1,
         bitmap2: bitmap2,
         version: version,
diff --git a/src/hal/ttgobeam.h b/src/hal/ttgobeam.h
index a7851877..41fd0ef0 100644
--- a/src/hal/ttgobeam.h
+++ b/src/hal/ttgobeam.h
@@ -25,13 +25,13 @@
 // GPS settings
 #define HAS_GPS 1 // use on board GPS
 #define GPS_SERIAL 9600, SERIAL_8N1, GPIO_NUM_12, GPIO_NUM_15 // UBlox NEO 6M
-#define GPS_INT GPIO_NUM_34 // 30ns accurary timepulse, to be external wired on pcb: NEO 6M Pin#3 -> GPIO34
+//#define GPS_INT GPIO_NUM_34 // 30ns accurary timepulse, to be external wired on pcb: NEO 6M Pin#3 -> GPIO34
 
 // enable only if device has these sensors, otherwise comment these lines
 // BME680 sensor on I2C bus
-#define HAS_BME 1 // Enable BME sensors in general
-#define HAS_BME680 SDA, SCL
-#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // !! connect SDIO of BME680 to GND !!
+//#define HAS_BME 1 // Enable BME sensors in general
+//#define HAS_BME680 SDA, SCL
+//#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // !! connect SDIO of BME680 to GND !!
 
 // display (if connected)
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
diff --git a/src/main.cpp b/src/main.cpp
index e47d71c4..a147707f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -35,7 +35,7 @@ clockloop     1     4     generates realtime telegrams for external clock
 timesync_req  1     3     processes realtime time sync requests
 irqhandler    1     2     display, timesync, gps, etc. triggered by timers
 gpsloop       1     2     reads data from GPS via serial or i2c
-bmeloop       1     1     reads data from BME sensor via i2c
+bmeloop       1     2     reads data from BME sensor via i2c
 looptask      1     1     runs the LMIC LoRa stack (arduino loop)
 IDLE          1     0     ESP32 arduino scheduler -> runs wifi channel rotator
 
diff --git a/src/paxcounter.conf b/src/paxcounter.conf
index 1da72086..13b6c0b7 100644
--- a/src/paxcounter.conf
+++ b/src/paxcounter.conf
@@ -71,7 +71,7 @@
 #define TIME_SYNC_INTERVAL_RETRY        10      // retry time sync after lost sync each .. minutes [default = 10], 0 means off
 #define TIME_SYNC_COMPILEDATE           0       // set to 1 to use compile date to initialize RTC after power outage [default = 0]
 #define TIME_SYNC_LORAWAN               0       // set to 1 to use LORA network as time source, 0 means off [default = 0]
-#define TIME_SYNC_LORASERVER            1       // set to 1 to use LORA timeserver as time source, 0 means off [default = 0]
+#define TIME_SYNC_LORASERVER            0       // set to 1 to use LORA timeserver as time source, 0 means off [default = 0]
 
 // settings for syncing time with timeserver applications
 #define TIME_SYNC_SAMPLES               1       // number of time requests for averaging