diff --git a/impl/src/main.c b/impl/src/main.c
index 37b86da..09d0680 100644
--- a/impl/src/main.c
+++ b/impl/src/main.c
@@ -69,47 +69,6 @@ void print_complex_array(const char *varname, float complex const *array, size_t
 }
 
 
-void hexdump(const uint8_t *data, size_t len)
-{
-	static const char lut[16] = "0123456789ABCDEF";
-	static const size_t BYTES_PER_LINE = 16;
-
-	size_t pos = 0;
-
-	while(pos < len) {
-		size_t bytes_in_line = len - pos;
-		if(bytes_in_line > BYTES_PER_LINE) {
-			bytes_in_line = BYTES_PER_LINE;
-		}
-
-		for(size_t i = 0; i < BYTES_PER_LINE; i++) {
-			if(i >= bytes_in_line) {
-				fputs("   ", stderr);
-			} else {
-				uint8_t byte = data[pos+i];
-
-				fprintf(stderr, "%c%c ", lut[byte >> 4], lut[byte & 0x0F]);
-			}
-		}
-
-		fputs("  ", stderr);
-
-		for(size_t i = 0; i < bytes_in_line; i++) {
-			uint8_t byte = data[pos+i];
-
-			if(isprint(byte)) {
-				putc(byte, stderr);
-			} else {
-				putc('.', stderr);
-			}
-		}
-
-		putc('\n', stderr);
-		pos += bytes_in_line;
-	}
-}
-
-
 void cb_rx(rx_evt_t evt, const struct layer1_rx_s *rx, uint8_t *packet_data, size_t packet_len)
 {
 	int ret;
diff --git a/impl/src/utils.c b/impl/src/utils.c
index 9047d20..7f8daa7 100644
--- a/impl/src/utils.c
+++ b/impl/src/utils.c
@@ -97,3 +97,44 @@ void sleep_until(double hires_time)
 	} while(ret == EINTR);
 }
 
+void hexdump(const uint8_t *data, size_t len)
+{
+	static const char lut[16] = "0123456789ABCDEF";
+	static const size_t BYTES_PER_LINE = 16;
+
+	size_t pos = 0;
+
+	while(pos < len) {
+		size_t bytes_in_line = len - pos;
+		if(bytes_in_line > BYTES_PER_LINE) {
+			bytes_in_line = BYTES_PER_LINE;
+		}
+
+		for(size_t i = 0; i < BYTES_PER_LINE; i++) {
+			if(i >= bytes_in_line) {
+				fputs("   ", stderr);
+			} else {
+				uint8_t byte = data[pos+i];
+
+				fprintf(stderr, "%c%c ", lut[byte >> 4], lut[byte & 0x0F]);
+			}
+		}
+
+		fputs("  ", stderr);
+
+		for(size_t i = 0; i < bytes_in_line; i++) {
+			uint8_t byte = data[pos+i];
+
+			if(isprint(byte)) {
+				putc(byte, stderr);
+			} else {
+				putc('.', stderr);
+			}
+		}
+
+		putc('\n', stderr);
+		pos += bytes_in_line;
+	}
+}
+
+
diff --git a/impl/src/utils.h b/impl/src/utils.h
index 68d0e26..f62a2c9 100644
--- a/impl/src/utils.h
+++ b/impl/src/utils.h
@@ -28,4 +28,6 @@ void sleep_until(double hires_time);
 void fsleep(double d);
 double get_hires_time(void);
 
+void hexdump(const uint8_t *data, size_t len);
+
 #endif // UTILS_H
diff --git a/impl/test/layer1/test_loopback.c b/impl/test/layer1/test_loopback.c
index 72894e0..e8fb256 100644
--- a/impl/test/layer1/test_loopback.c
+++ b/impl/test/layer1/test_loopback.c
@@ -33,47 +33,6 @@ void print_complex_array(const char *varname, float complex const *array, size_t
 }
 
 
-void hexdump(const uint8_t *data, size_t len)
-{
-	static const char lut[16] = "0123456789ABCDEF";
-	static const size_t BYTES_PER_LINE = 16;
-
-	size_t pos = 0;
-
-	while(pos < len) {
-		size_t bytes_in_line = len - pos;
-		if(bytes_in_line > BYTES_PER_LINE) {
-			bytes_in_line = BYTES_PER_LINE;
-		}
-
-		for(size_t i = 0; i < BYTES_PER_LINE; i++) {
-			if(i >= bytes_in_line) {
-				fputs("   ", stderr);
-			} else {
-				uint8_t byte = data[pos+i];
-
-				fprintf(stderr, "%c%c ", lut[byte >> 4], lut[byte & 0x0F]);
-			}
-		}
-
-		fputs("  ", stderr);
-
-		for(size_t i = 0; i < bytes_in_line; i++) {
-			uint8_t byte = data[pos+i];
-
-			if(isprint(byte)) {
-				putc(byte, stderr);
-			} else {
-				putc('.', stderr);
-			}
-		}
-
-		putc('\n', stderr);
-		pos += bytes_in_line;
-	}
-}
-
-
 void cb_rx(rx_evt_t evt, const layer1_rx_t *rx, uint8_t *packet_data, size_t packet_len)
 {
 	(void)rx;
diff --git a/impl/test/layer1/test_rx_file.c b/impl/test/layer1/test_rx_file.c
index 03b911c..c440a1f 100644
--- a/impl/test/layer1/test_rx_file.c
+++ b/impl/test/layer1/test_rx_file.c
@@ -5,6 +5,7 @@
 #include <liquid/liquid.h>
 
 #include "logger.h"
+#include "utils.h"
 #include "layer1/rx.h"
 
 #include "config.h"