Fixed AFSK transmit frequency

afsk/main.c

@@ -828,7 +828,7 @@ for (int j = 0; j < frameCnt; j++)
   char header_str2[] = ">CQ:hi hi ";
   char header_str4[] = "hi hi ";	
   char footer_str1[] = "\' > t.txt && echo \'"; 
-  char footer_str[] = ">CQ:hi hi ' >> t.txt && gen_packets -o telem.wav t.txt -r 48000 > /dev/null 2>&1 && cat telem.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.897e3 > /dev/null 2>&1";
+  char footer_str[] = ">CQ:hi hi ' >> t.txt && gen_packets -o telem.wav t.txt -r 48000 > /dev/null 2>&1 && cat telem.wav | csdr convert_i16_f | csdr gain_ff 7000 | csdr convert_f_samplerf 20833 | sudo /home/pi/rpitx/rpitx -i- -m RF -f 434.9e3 > /dev/null 2>&1";
 	
   if (ax5043)
   {