diff --git a/firmware.bin b/firmware.bin
index 9ac13f6..c2871ff 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 65a178c..6bcbd1f 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/panadapter.c b/panadapter.c
index 924c42f..4b9305c 100644
--- a/panadapter.c
+++ b/panadapter.c
@@ -245,7 +245,7 @@ void PAN_process_10ms(void)
 
 	// completed a full sweep/scan, draw the panadapter on-screen
 
-	if (g_panadapter_cycles + 1)
+	if (g_panadapter_cycles + 1)  // prevent wrap-a-round
 		g_panadapter_cycles++;
 
 	PAN_update_min_max();
diff --git a/panadapter.h b/panadapter.h
index 48ffd2f..6bd3f9f 100644
--- a/panadapter.h
+++ b/panadapter.h
@@ -25,8 +25,8 @@
 // number of bins either side of the VFO RX frequency
 #define PANADAPTER_BINS   ((LCD_WIDTH / 2) - 1)
 
-#define PANADAPTER_MAX_STEP    2500
-#define PANADAPTER_MIN_STEP    625
+#define PANADAPTER_MAX_STEP    2500    // 25kHz
+#define PANADAPTER_MIN_STEP    500     // 5kHz
 
 extern bool         g_panadapter_enabled;
 extern unsigned int g_panadapter_cycles;
diff --git a/ui/main.c b/ui/main.c
index 981e941..d606efd 100644
--- a/ui/main.c
+++ b/ui/main.c
@@ -140,8 +140,8 @@ void draw_bar(uint8_t *line, const int len, const int max_width)
 			uint8_t           *p_line    = g_frame_buffer[line];
 			char               s[16];
 
-			if (now)
-				memset(p_line, 0, LCD_WIDTH);
+			// clear the line
+			memset(p_line, 0, LCD_WIDTH);
 
 			// TX timeout seconds
 			sprintf(s, "%3u", secs);
@@ -242,8 +242,8 @@ void draw_bar(uint8_t *line, const int len, const int max_width)
 					g_dtmf_call_state != DTMF_CALL_STATE_NONE)
 					return false;     // display is in use
 
-				if (now)
-					memset(g_frame_buffer[line], 0, LCD_WIDTH);
+				// clear the line
+				memset(g_frame_buffer[line], 0, LCD_WIDTH);
 
 				if (rssi_dBm >= (s9_dBm + 6))
 				{	// S9+XXdB, 1dB increment
@@ -445,10 +445,8 @@ void big_freq(const uint32_t frequency, const unsigned int x, const unsigned int
 			}
 		}
 
-		if (now)
-		{	// clear our assigned screen area
-			memset(g_frame_buffer[line], 0, LCD_WIDTH * 3);
-		}
+		// clear our assigned screen area
+		memset(g_frame_buffer[line], 0, LCD_WIDTH * 3);
 
 		#ifdef ENABLE_PANADAPTER_PEAK_FREQ
 			if (g_panadapter_peak_freq > 0 && g_panadapter_cycles > 0)