diff --git a/NANOVNA_STM32_F072/board.h b/NANOVNA_STM32_F072/board.h
index 7ab4c29..6c6226d 100644
--- a/NANOVNA_STM32_F072/board.h
+++ b/NANOVNA_STM32_F072/board.h
@@ -26,7 +26,7 @@
  */
 #define BOARD_NANOVNA_STM32_F072
 #define BOARD_NAME              "NanoVNA"
-
+#define USER_CALL		        "DV2JBs"
 /*
  * Board frequencies.
  */
diff --git a/ui.c b/ui.c
index 480d32b..bbc0d22 100644
--- a/ui.c
+++ b/ui.c
@@ -396,7 +396,9 @@ show_version(void)
   adc_stop(ADC1);
   ili9341_fill(0, 0, 320, 240, 0);
 
-  ili9341_drawstring_size(BOARD_NAME, x, y, 0xffff, 0x0000, 4);
+
+  ili9341_drawstring_size(USER_CALL, x, y, 0xf800, 0x0000, 3);
+  ili9341_drawstring_size(BOARD_NAME, x, y += 25, 0xffff, 0x0000, 4);
   y += 25;
 
   ili9341_drawstring_8x8_var("2016-2019 Copyright @edy555", x, y += 10, 0xffff, 0x0000);