diff --git a/src/main.cpp b/src/main.cpp
index 788ee74b..1da702c7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -385,7 +385,7 @@ uint64_t uptime() {
     }    
 
     void updateDisplay() {
-        // timed display refresh according to frames per second setting
+        // timed display refresh according to refresh cycle setting
         if (currentMillis - previousDisplaymillis >= DISPLAYREFRESH_MS) {
             refreshDisplay();
             previousDisplaymillis += DISPLAYREFRESH_MS;
@@ -580,10 +580,9 @@ do_send(&sendjob);
 void loop() {
 
     uptimecounter = uptime() / 1000; // counts uptime in seconds (64bit)
-    
-    // state machine for central control of all timimg based features
-
     currentMillis = millis(); // timebase for state machine in milliseconds (32bit)
+
+    // simple state machine for controlling display, LED, button, etc.
     
     #ifdef HAS_BUTTON
         readButton();
@@ -598,9 +597,7 @@ void loop() {
         refreshLED();
     #endif
 
-    //sendPayload();
-  
-    
+    //sendPayload();  
 
 }
 
diff --git a/src/main.h b/src/main.h
index f077f9e0..cd606adb 100644
--- a/src/main.h
+++ b/src/main.h
@@ -35,8 +35,8 @@
 #define	WIFI_CHANNEL_SWITCH_INTERVAL    50      // [seconds/100] -> 0,5 sec.
 
 // LoRa payload send cycle
-#define SEND_SECS                       120     // [seconds/2] -> 240 sec.
-//#define SEND_SECS                       30    // [seconds/2] -> 60 sec.
+//#define SEND_SECS                       120     // [seconds/2] -> 240 sec.
+#define SEND_SECS                       30    // [seconds/2] -> 60 sec.
 
 // Default LoRa Spreadfactor
 #define LORASFDEFAULT                   9       // 7 ... 12 SF, according to LoRaWAN specs