lora changes

examples/lora_example.py

@@ -12,4 +12,4 @@ while True:
     print('TX: {}'.format(payload))
     lora1.println(payload)
     counter += 1
-    sleep(5)
+    sleep(3)

examples/lora_settings.py

@@ -6,8 +6,8 @@ lora_default = {
     'frequency': 418500000,
     'frequency_offset':0,
     'tx_power_level': 14,
-    'signal_bandwidth': 125e3,
-    'spreading_factor': 9,
+    'signal_bandwidth': 31.25e3,
+    'spreading_factor': 12,
     'coding_rate': 5,
     'preamble_length': 8,
     'implicitHeader': False,