changed from samplePeriod to frameTime

cubesatsim/cubesatsim.ino

@@ -113,7 +113,8 @@ void loop() {
   else if (mode == AFSK)
     send_packet();
 
-  while ((millis() - sampleTime) < ((unsigned int)samplePeriod)) // - 250))  // was 250 100
+//  while ((millis() - sampleTime) < ((unsigned int)samplePeriod)) // - 250))  // was 250 100
+  while ((millis() - sampleTime) < ((unsigned int)frameTime)) // - 250))  // was 250 100
     sleep(0.1); // 25); // 0.5);  // 25);
   sampleTime = (unsigned int) millis();