diff --git a/config.h b/config.h
index b1f5856..e693554 100644
--- a/config.h
+++ b/config.h
@@ -9,30 +9,54 @@
 #include "config_external.h"
 #else
 
-//**************config**************
-#define CALLSIGN "DF8OE" // put your callsign here
-#define APRS_CALLSIGN "DF8OE-10"
-#define APRS_SSID 'B'
+//**************config**********************
+#define CALLSIGN "DF8OE" // put your RTTY callsign here
+#define APRS_CALLSIGN "DF8OE" // put your APRS callsign here
+#define APRS_SSID 'B' // put your APRS SSID here
+// 0 --> Your primary station usually fixed and message capable
+// 1 --> generic additional station, digi, mobile, wx, etc.
+// 2 --> generic additional station, digi, mobile, wx, etc.
+// 3 --> generic additional station, digi, mobile, wx, etc.
+// 4 --> generic additional station, digi, mobile, wx, etc.
+// 5 --> Other network sources (Dstar, Iphones, Blackberry's etc)
+// 6 --> Special activity, Satellite ops, camping or 6 meters, etc.
+// 7 --> walkie talkies, HT's or other human portable
+// 8 --> boats, sailboats, RV's or second main mobile
+// 9 --> Primary Mobile (usually message capable)
+// 10 --> internet, Igates, echolink, winlink, AVRS, APRN, etc.
+// 11 --> balloons, aircraft, spacecraft, etc.
+// 12 --> APRStt, DTMF, RFID, devices, one-way trackers*, etc.
+// 13 --> Weather stations
+// 14 --> Truckers or generally full time drivers
+// 15 --> generic additional station, digi, mobile, wx, etc.
+
 #define APRS_COMMENT " Hello from the sky!"
-#define RTTY_TO_APRS_RATIO 5
+#define RTTY_TO_APRS_RATIO 5 //transmit APRS packet with each x RTTY packet
 
 //*************frequency********************
 #define RTTY_FREQUENCY  434.500f //Mhz middle frequency
 #define APRS_FREQUENCY  432.500f //Mhz middle frequency
-//************rtty speed****************** si4032
-#define RTTY_SPEED  300
-// SHITY -> 450Hz
-//************rtty bits****************** si4032
-#define RTTY_7BIT   1
-//************rtty stop bits****************** si4032
+//************rtty speed*********************** si4032
+#define RTTY_SPEED  75 // RTTY baudrate
+// SHIFT is always 450Hz
+//************rtty bits************************ si4032
+#define RTTY_7BIT   1 // if 0 --> 5 bits
+//************rtty stop bits******************* si4032
 #define RTTY_USE_2_STOP_BITS   0
 //********* power definition**************************
-#define Smoc  7 // PWR 0...7 0- MIN ... 7 - MAX
-// 7 -> 42.95 mW@434.150 MHz na E4406A
-//***************************************************
+#define TX_POWER  0 // PWR 0...7 0- MIN ... 7 - MAX
+// 0 --> -8dBm
+// 1 --> -5dBm
+// 2 --> -2dBm
+// 3 --> 1dBm
+// 4 --> 4dBm
+// 5 --> 7dBm
+// 6 --> 10dBm
+// 7 --> 13dBm
+//****************************************************
 // WARNING: do not use this in flying tracker!
 #define ALLOW_DISABLE_BY_BUTTON 1
-//********** frame delay in msec**********
+//********** frame delay in msec**********************
 #define tx_delay  5000
 #endif
 
diff --git a/main.c b/main.c
index 7314437..68341a8 100644
--- a/main.c
+++ b/main.c
@@ -33,7 +33,7 @@ unsigned int send_cun;        //frame counter
 char status[2] = {'N'};
 int napiecie;
 
-volatile char flaga = 0;//((((tx_delay / 1000) & 0x0f) << 3) | Smoc);
+volatile char flaga = 0;//((((tx_delay / 1000) & 0x0f) << 3) | TX_POWER);
 uint16_t CRC_rtty = 0x12ab;  //checksum
 char buf_rtty[200];
 
@@ -149,7 +149,7 @@ int main(void) {
   radio_set_tx_frequency(RTTY_FREQUENCY);
 
   // Programowanie mocy nadajnika
-  radio_rw_register(0x6D, 00 | (Smoc & 0x0007), 1);
+  radio_rw_register(0x6D, 00 | (TX_POWER & 0x0007), 1);
 
   radio_rw_register(0x71, 0x00, 1);
   radio_rw_register(0x87, 0x08, 0);