Remove sync word

Author: EliasJRH

config.json

@@ -7,16 +7,16 @@
     "frequency": 433050000,
     "power": 15,
     "spread_factor": 7,
-    "coding_rate": "4/7",
-    "bandwidth": 500,
+    "coding_rate": "4/5",
+    "bandwidth": 125,
     "preamble_len": 6,
     "cyclic_redundancy": true,
-    "iqi": false,
-    "sync_word": "0x43"
+    "iqi": false
   },
   "approved_callsigns": {
     "VA3INI": "Matteo Golin",
     "VA3ZTA": "Darwin Jull",
-    "VE3LWN": "Thomas Selwyn"
+    "VE3LWN": "Thomas Selwyn",
+    "VA3EHJ": "Elias Hawa"
   }
 }