I finally found a bunch of references to APRS on the net and they all
appear to assume a 3kHz deviation. Let's see if this works better with
Yaesu radios.
Signed-off-by: Keith Packard <keithp@keithp.com>
};
/*
- * APRS deviation is 5kHz
+ * APRS deviation is 3kHz
*
* fdev = fosc >> 24 * (256 + dev_m) << dev_e
*
- * 32e6Hz / (2 ** 24) * (256 + 71) * (2 ** 3) = 4989
+ * 32e6Hz / (2 ** 24) * (256 + 137) * (2 ** 2) = 2998Hz
*/
-#define APRS_DEV_E 3
-#define APRS_DEV_M 71
-#define APRS_PACKET_LEN 50
+#define APRS_DEV_E 2
+#define APRS_DEV_M 137
/*
* For our APRS beacon, set the symbol rate to 9.6kBaud (8x oversampling for 1200 baud data rate)
};
/*
- * APRS deviation is the same as RDF
+ * APRS deviation is 3kHz
+ *
+ * 26e6 / (2 ** 17) * (8 + 7) * (2 ** 0) = 2975
*/
-#define APRS_DEV_E RDF_DEV_E
-#define APRS_DEV_M RDF_DEV_M
+#define APRS_DEV_E 0
+#define APRS_DEV_M 7
/*
* For our APRS beacon, set the symbol rate to 9.6kBaud (8x oversampling for 1200 baud data rate)