diff --git a/main.c b/main.c
index fd6f55b..257c41e 100644
--- a/main.c
+++ b/main.c
@@ -117,8 +117,23 @@ main(void)
 
 	usb_printf("rssi: %#hx\r\n", Radio.Rssi(MODEM_LORA));
 
-	Radio.SetRxConfig(MODEM_LORA, 0/*bandwidth*/, 7/*datarate*/, 1/*coderate*/, 0/*afc*/, 8/*preamblen*/, 5/*symTimeout*/, 0/*fixLen*/, 0/*payloadlen*/, 1/*crcOn*/, 0/*freqHop*/, 0/*hopPeriod*/, false/*iqInverted*/, true/*rxcont*/);
-	Radio.SetTxConfig(MODEM_LORA, 11/*power*/, 0/*fdev*/, 0/*bandwidth*/, 7/*datarate*/, 1/*coderate*/, 8/*preamblen*/, 0/*fixLen*/, 1/*crcOn*/, 0/*freqHop*/, 0/*hopPeriod*/, false/*iqInverted*/, 1000/*timeout*/);
+	/* RX/TX parameters */
+	const uint8_t modem = MODEM_LORA;
+	const uint8_t bandwidth = 0 /* 128 kHz */;
+	const uint8_t datarate = 7 /* 128 chips */;
+	const uint8_t coderate = 1 /* 4/5 */;
+	const uint8_t preambleLen = 4 /* symbols */;
+	const uint8_t fixLen = 0 /* variable */;
+	const uint8_t crcOn = 1 /* on */;
+	const uint8_t freqHopOn = 0 /* off */;
+	const bool iqInverted = false /* not inverted */;
+
+	Radio.SetRxConfig(modem, bandwidth, datarate, coderate, 0/*afc*/,
+	    preambleLen, 5/*symTimeout*/, fixLen, 0/*payloadlen*/, crcOn,
+	    freqHopOn, 0/*hopPeriod*/, iqInverted, true/*rxcont*/);
+	Radio.SetTxConfig(modem, 11/*power*/, 0/*fdev*/, bandwidth, datarate,
+	    coderate, preambleLen, fixLen, crcOn, freqHopOn, 0/*hopPeriod*/,
+	    iqInverted, 1000/*timeout*/);
 
 	uint8_t sendmsg[] = "testing lora123";