- * Use that to 'walk' to the target frequency by following
- * a 'bresenham' line from 434550kHz to the target
- * frequency, and updating the radio setting along the way
+ * The relation between value and freq is linear, so
+ * to get the value for an arbitrary frequency:
+ *
+ * target_value target_freq
+ * ------------ = ------------
+ * cal_value cal_freq
+ *
+ * cal_value * target_freq
+ * target_value = -----------------------
+ * cal_freq