diff --git a/impl/src/sdr/sdr_sxceiver.c b/impl/src/sdr/sdr_sxceiver.c
index 01f5967..6326740 100644
--- a/impl/src/sdr/sdr_sxceiver.c
+++ b/impl/src/sdr/sdr_sxceiver.c
@@ -8,13 +8,15 @@
 #include <math.h>
 #include <string.h>
 
+#include "logger.h"
+
 #include "config.h"
 
 #include "sdr_sxceiver.h"
 
 void soapy_log_handler(const SoapySDRLogLevel logLevel, const char *message)
 {
-	fprintf(stderr, "soapy [%d]: %s\n", logLevel, message);
+	LOG(LVL_ERR, "soapy [%d]: %s", logLevel, message);
 }
 
 static void close_streams(sdr_ctx_t *ctx)
@@ -52,12 +54,12 @@ result_t sdr_init(sdr_ctx_t *ctx)
 	SoapySDRKwargs *results = SoapySDRDevice_enumerate(NULL, &length);
 	for (size_t i = 0; i < length; i++)
 	{
-		fprintf(stderr, "sdr: Found device #%d:\n", (int)i);
+		LOG(LVL_INFO, "Found device #%d:", (int)i);
 		for (size_t j = 0; j < results[i].size; j++)
 		{
-			fprintf(stderr, "sdr: - %s=%s\n", results[i].keys[j], results[i].vals[j]);
+			LOG(LVL_INFO, "- %s=%s", results[i].keys[j], results[i].vals[j]);
 		}
-		fprintf(stderr, "sdr: \n");
+		LOG(LVL_ERR, "");
 	}
 	SoapySDRKwargsList_clear(results, length);
 
@@ -71,85 +73,85 @@ result_t sdr_init(sdr_ctx_t *ctx)
 
 	if (ctx->sdr == NULL)
 	{
-		fprintf(stderr, "sdr: SoapySDRDevice_make fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "SoapySDRDevice_make fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	//query device info
 	SoapySDRRange *ranges;
 	char** names = SoapySDRDevice_listAntennas(ctx->sdr, SOAPY_SDR_RX, 0, &length);
-	fprintf(stderr, "sdr: Rx antennas: ");
-	for (size_t i = 0; i < length; i++) fprintf(stderr, "%s, ", names[i]);
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "Rx antennas: ");
+	for (size_t i = 0; i < length; i++) LOG(LVL_INFO, "%s, ", names[i]);
+	LOG(LVL_INFO, "");
 	SoapySDRStrings_clear(&names, length);
 
 	names = SoapySDRDevice_listGains(ctx->sdr, SOAPY_SDR_RX, 0, &length);
-	fprintf(stderr, "sdr: Rx gains: ");
+	LOG(LVL_INFO, "Rx gains: ");
 	for (size_t i = 0; i < length; i++) {
 		SoapySDRRange range = SoapySDRDevice_getGainRange(ctx->sdr, SOAPY_SDR_RX, i);
-		fprintf(stderr, "%s [%.3lf .. %.3lf / %.3lf], ", names[i], range.minimum, range.maximum, range.step);
+		LOG(LVL_INFO, "%s [%.3lf .. %.3lf / %.3lf], ", names[i], range.minimum, range.maximum, range.step);
 	}
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "");
 	SoapySDRStrings_clear(&names, length);
 
 	ranges = SoapySDRDevice_getFrequencyRange(ctx->sdr, SOAPY_SDR_RX, 0, &length);
-	fprintf(stderr, "sdr: Rx freq ranges: ");
-	for (size_t i = 0; i < length; i++) fprintf(stderr, "[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "Rx freq ranges: ");
+	for (size_t i = 0; i < length; i++) LOG(LVL_INFO, "[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
+	LOG(LVL_INFO, "");
 	free(ranges);
 
 	names = SoapySDRDevice_listAntennas(ctx->sdr, SOAPY_SDR_TX, 0, &length);
-	fprintf(stderr, "sdr: Tx antennas: ");
-	for (size_t i = 0; i < length; i++) fprintf(stderr, "%s, ", names[i]);
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "Tx antennas: ");
+	for (size_t i = 0; i < length; i++) LOG(LVL_INFO, "%s, ", names[i]);
+	LOG(LVL_INFO, "");
 	SoapySDRStrings_clear(&names, length);
 
 	names = SoapySDRDevice_listGains(ctx->sdr, SOAPY_SDR_TX, 0, &length);
-	fprintf(stderr, "sdr: Tx gains: ");
+	LOG(LVL_INFO, "Tx gains: ");
 	for (size_t i = 0; i < length; i++) {
 		SoapySDRRange range = SoapySDRDevice_getGainRange(ctx->sdr, SOAPY_SDR_TX, i);
-		fprintf(stderr, "%s [%.3lf .. %.3lf / %.3lf], ", names[i], range.minimum, range.maximum, range.step);
+		LOG(LVL_INFO, "%s [%.3lf .. %.3lf / %.3lf], ", names[i], range.minimum, range.maximum, range.step);
 	}
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "");
 	SoapySDRStrings_clear(&names, length);
 
 	ranges = SoapySDRDevice_getFrequencyRange(ctx->sdr, SOAPY_SDR_TX, 0, &length);
-	fprintf(stderr, "sdr: Tx freq ranges: ");
-	for (size_t i = 0; i < length; i++) fprintf(stderr, "[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
-	fprintf(stderr, "\n");
+	LOG(LVL_INFO, "Tx freq ranges: ");
+	for (size_t i = 0; i < length; i++) LOG(LVL_INFO, "[%g Hz -> %g Hz], ", ranges[i].minimum, ranges[i].maximum);
+	LOG(LVL_INFO, "");
 	free(ranges);
 
 	//setup streams
 	ctx->rx_stream = SoapySDRDevice_setupStream(ctx->sdr, SOAPY_SDR_RX, SOAPY_SDR_CF32, NULL, 0, NULL);
 
 	if(ctx->rx_stream == NULL) {
-		fprintf(stderr, "sdr: setupStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setupStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	ctx->tx_stream = SoapySDRDevice_setupStream(ctx->sdr, SOAPY_SDR_TX, SOAPY_SDR_CF32, NULL, 0, NULL);
 
 	if(ctx->tx_stream == NULL) {
-		fprintf(stderr, "sdr: setupStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setupStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	//apply settings
 	if (SoapySDRDevice_setSampleRate(ctx->sdr, SOAPY_SDR_RX, 0, SDR_RX_SAMPLING_RATE) != 0) {
-		fprintf(stderr, "sdr: setSampleRate fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setSampleRate fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 	if (SoapySDRDevice_setFrequency(ctx->sdr, SOAPY_SDR_RX, 0, SDR_RX_FREQ - SDR_RX_IF_SHIFT, NULL) != 0) {
-		fprintf(stderr, "sdr: setFrequency fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setFrequency fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	if (SoapySDRDevice_setSampleRate(ctx->sdr, SOAPY_SDR_TX, 0, SDR_TX_SAMPLING_RATE) != 0) {
-		fprintf(stderr, "sdr: setSampleRate fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setSampleRate fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 	if (SoapySDRDevice_setFrequency(ctx->sdr, SOAPY_SDR_TX, 0, SDR_TX_FREQ, NULL) != 0) {
-		fprintf(stderr, "sdr: setFrequency fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setFrequency fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -176,17 +178,17 @@ result_t sdr_start_rx(sdr_ctx_t *ctx)
 {
 	// set gains
 	if(SoapySDRDevice_setGainElement(ctx->sdr, SOAPY_SDR_RX, 0, "PGA", SDR_GAIN_RX_PGA) != 0) {
-		fprintf(stderr, "sdr: setGainElement fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setGainElement fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	if(SoapySDRDevice_setGainElement(ctx->sdr, SOAPY_SDR_RX, 0, "LNA", SDR_GAIN_RX_LNA) != 0) {
-		fprintf(stderr, "sdr: setGainElement fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setGainElement fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	if(SoapySDRDevice_activateStream(ctx->sdr, ctx->rx_stream, 0, 0, 0) != 0) {
-		fprintf(stderr, "sdr: activateStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -198,17 +200,17 @@ result_t sdr_start_tx(sdr_ctx_t *ctx, size_t burst_size)
 {
 	// set gain
 	if(SoapySDRDevice_setGainElement(ctx->sdr, SOAPY_SDR_TX, 0, "DAC", SDR_GAIN_TX_DAC) != 0) {
-		fprintf(stderr, "sdr: setGainElement fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setGainElement fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	if(SoapySDRDevice_setGainElement(ctx->sdr, SOAPY_SDR_TX, 0, "MIXER", SDR_GAIN_TX_MIXER) != 0) {
-		fprintf(stderr, "sdr: setGainElement fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "setGainElement fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
 	if(SoapySDRDevice_activateStream(ctx->sdr, ctx->tx_stream, 0, 0, burst_size) != 0) {
-		fprintf(stderr, "sdr: activateStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -219,7 +221,7 @@ result_t sdr_start_tx(sdr_ctx_t *ctx, size_t burst_size)
 result_t sdr_stop_rx(sdr_ctx_t *ctx)
 {
 	if(SoapySDRDevice_deactivateStream(ctx->sdr, ctx->rx_stream, 0, 0) != 0) {
-		fprintf(stderr, "sdr: activateStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -230,7 +232,7 @@ result_t sdr_stop_rx(sdr_ctx_t *ctx)
 result_t sdr_stop_tx(sdr_ctx_t *ctx)
 {
 	if(SoapySDRDevice_deactivateStream(ctx->sdr, ctx->tx_stream, 0, 0) != 0) {
-		fprintf(stderr, "sdr: activateStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "activateStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -250,7 +252,7 @@ result_t sdr_transmit(sdr_ctx_t *ctx, const float complex *samples, size_t nsamp
 	int ret = SoapySDRDevice_writeStream(ctx->sdr, ctx->tx_stream, (const void* const*)buffs, nsamples, &flags, 0, timeout_us);
 
 	if(ret <= 0) {
-		fprintf(stderr, "sdr: writeStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "writeStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}
 
@@ -271,7 +273,7 @@ result_t sdr_receive(sdr_ctx_t *ctx, float complex *samples, size_t *nsamples, l
 	int ret = SoapySDRDevice_readStream(ctx->sdr, ctx->rx_stream, (void* const*)buffs, *nsamples, &flags, &timeNs, timeout_us);
 
 	if(ret <= 0) {
-		fprintf(stderr, "sdr: readStream fail: %s\n", SoapySDRDevice_lastError());
+		LOG(LVL_ERR, "readStream fail: %s", SoapySDRDevice_lastError());
 		return ERR_SOAPY;
 	}