diff --git a/Bandscope.ino b/Bandscope.ino
index 3054841..2f952dc 100644
--- a/Bandscope.ino
+++ b/Bandscope.ino
@@ -237,14 +237,8 @@ static uint16_t		chunkIndex;
 
 		if ( numberOfWebsocketClients > 0 )	//  Start off the json document for the scan
 		{
-			jsonDocument.clear ();
 			chunkIndex = 0;
-
-			jsonDocument["PreAmp"] = setting.PreampGain;
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = 0;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
+			initChunkSweepDoc (autoSweepStep);
 			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
@@ -395,12 +389,8 @@ static uint16_t		chunkIndex;
 		if ( ( chunkIndex >= wiFiPoints ) || !jsonDocInitialised )		// Start new jSon document
 		{
 			chunkIndex = 0;
-			jsonDocument.clear();
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = autoSweepStep;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
-			Points = jsonDocument.createNestedArray  ("Points" );	// Add Points array
+			initChunkSweepDoc (autoSweepStep);
+			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
 	}
diff --git a/IFsweep.ino b/IFsweep.ino
index f91d843..c8e003e 100644
--- a/IFsweep.ino
+++ b/IFsweep.ino
@@ -120,6 +120,7 @@ static uint16_t		chunkIndex;
 	 	}	// initSweep || changedSetting
 
 		autoSweepStep = 0;						// Set the step counter to zero
+		sweepStep = 0;
 		autoSweepFreq = startFreq_IF;			// Set the start frequency.
 
 		nextPointFreq = autoSweepFreq + autoSweepFreqStep;
@@ -142,24 +143,16 @@ static uint16_t		chunkIndex;
 
 		if ( numberOfWebsocketClients > 0 )	//  Start off the json document for the scan
 		{
-			jsonDocument.clear ();
 			chunkIndex = 0;
-
-			jsonDocument["PreAmp"] = setting.PreampGain;			// Fixed gain
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = 0;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
+			initChunkSweepDoc (sweepStep);
 			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
-
 		else
 			jsonDocInitialised = false;
 
 #endif										// #ifdef USE_WIFI
 
-		sweepStep = 0;
 		startFreq   = startFreq_IF + sigFreq_IF;		// Start freq for the LO
 		stopFreq    = stopFreq_IF  + sigFreq_IF;		// Stop freq for the LO
 
@@ -315,12 +308,8 @@ static uint16_t		chunkIndex;
 		if ( ( chunkIndex >= wiFiPoints ) || !jsonDocInitialised )		// Start new jSon document
 		{
 			chunkIndex = 0;
-			jsonDocument.clear();
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = sweepStep;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
-			Points = jsonDocument.createNestedArray  ("Points" );	// Add Points array
+			initChunkSweepDoc (sweepStep);
+			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
 	}
diff --git a/RXsweep.ino b/RXsweep.ino
index 0116113..608639e 100644
--- a/RXsweep.ino
+++ b/RXsweep.ino
@@ -126,6 +126,7 @@ static uint16_t		chunkIndex;
 	 	}	// initSweep || changedSetting
 
 		autoSweepStep = 0;						// Set the step counter to zero
+		sweepStep = 0;
 		autoSweepFreq = startFreq_RX;			// Set the start frequency.
 
 		nextPointFreq = autoSweepFreq + autoSweepFreqStep;
@@ -148,24 +149,16 @@ static uint16_t		chunkIndex;
 
 		if ( numberOfWebsocketClients > 0 )	//  Start off the json document for the scan
 		{
-			jsonDocument.clear ();
 			chunkIndex = 0;
-
-			jsonDocument["PreAmp"] = setting.PreampGain;			
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = 0;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
+			initChunkSweepDoc (sweepStep);
 			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
-
 		else
 			jsonDocInitialised = false;
 
 #endif										// #ifdef USE_WIFI
 
-		sweepStep = 0;
 		startFreq   = startFreq_RX;		// Start freq for the RX
 		stopFreq    = stopFreq_RX;		// Stop freq for the RX
 
@@ -322,12 +315,8 @@ static uint16_t		chunkIndex;
 		if ( ( chunkIndex >= wiFiPoints ) || !jsonDocInitialised )		// Start new jSon document
 		{
 			chunkIndex = 0;
-			jsonDocument.clear();
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = sweepStep;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
-			Points = jsonDocument.createNestedArray  ("Points" );	// Add Points array
+			initChunkSweepDoc (sweepStep);
+			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
 	}
diff --git a/SweepLo.ino b/SweepLo.ino
index feee8b2..6fc658a 100644
--- a/SweepLo.ino
+++ b/SweepLo.ino
@@ -185,6 +185,7 @@ static uint32_t		offsetIF;			// IF frequency offset by half the bandwidth to pos
 	 	}	// initSweep || changedSetting
 
 		autoSweepStep = 0;						// Set the step counter to zero
+		sweepStep = 0;
 		autoSweepFreq = setting.ScanStart;		// Set the start frequency.
 
 		nextPointFreq = autoSweepFreq + autoSweepFreqStep;
@@ -253,22 +254,15 @@ static uint32_t		offsetIF;			// IF frequency offset by half the bandwidth to pos
 		{
 			jsonDocument.clear ();
 			chunkIndex = 0;
-
-			jsonDocument["PreAmp"] = setting.PreampGain;			// Fixed gain
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = 0;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
+			initChunkSweepDoc (sweepStep);
 			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
-
 		else
 			jsonDocInitialised = false;
 
 #endif										// #ifdef USE_WIFI
 
-		sweepStep = 0;
 		startFreq   = setting.ScanStart + tempIF;		// Start freq for the LO
 		stopFreq    = setting.ScanStop  + tempIF;		// Stop freq for the LO
 
@@ -454,12 +448,8 @@ static uint32_t		offsetIF;			// IF frequency offset by half the bandwidth to pos
 		if ( ( chunkIndex >= wiFiPoints ) || !jsonDocInitialised )		// Start new jSon document
 		{
 			chunkIndex = 0;
-			jsonDocument.clear();
-			jsonDocument["mType"] = "chunkSweep";
-			jsonDocument["StartIndex"] = sweepStep;
-			jsonDocument["sweepPoints"] = sweepPoints;
-			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
-			Points = jsonDocument.createNestedArray  ("Points" );	// Add Points array
+			initChunkSweepDoc (sweepStep);
+			Points = jsonDocument.createNestedArray ( "Points" );	// Add Points array
 			jsonDocInitialised = true;
 		}
 	}
diff --git a/simpleSA.ino b/simpleSA.ino
index 8ab6329..2294603 100644
--- a/simpleSA.ino
+++ b/simpleSA.ino
@@ -352,10 +352,10 @@ uint16_t		websocketFailCount;
 
 #ifdef USE_WIFI
 // Json document buffers
-size_t capacity = JSON_ARRAY_SIZE ( MAX_WIFI_POINTS + 1 )
-						+ ( MAX_WIFI_POINTS + 1 ) * JSON_OBJECT_SIZE ( 2 ) + JSON_OBJECT_SIZE( 5 );
+//size_t capacity = JSON_ARRAY_SIZE ( MAX_WIFI_POINTS + 1 )
+//						+ ( MAX_WIFI_POINTS + 1 ) * JSON_OBJECT_SIZE ( 2 ) + JSON_OBJECT_SIZE( 5 );
 
-static DynamicJsonDocument jsonDocument ( capacity );					// Buffer for json data to be pushed to the web clients
+static DynamicJsonDocument jsonDocument ( 4000 );					// Buffer for json data to be pushed to the web clients
 static JsonArray Points = jsonDocument.createNestedArray ( "Points" );	// add Points array
 #endif
 
@@ -1114,6 +1114,21 @@ void init_sweep()
 }
 
 
+/*
+ * Initialise the JSON document that is used to push the sweep data to the web clients
+ * Used in all the sweep modes
+ */
+void initChunkSweepDoc (uint32_t startIndex)
+{
+			jsonDocument.clear ();
+			jsonDocument["PreAmp"] = setting.PreampGain;			// Fixed gain
+			jsonDocument["mType"] = "chunkSweep";
+			jsonDocument["StartIndex"] = startIndex;
+			jsonDocument["sweepPoints"] = sweepPoints;
+			jsonDocument["sweepTime"] = (uint32_t)(sweepMicros/1000);
+}
+
+
 
 /*
  *  Initialise high frequency mode sweep.
diff --git a/simpleSA_wifi.cpp b/simpleSA_wifi.cpp
index 5fd0ac8..7507240 100644
--- a/simpleSA_wifi.cpp
+++ b/simpleSA_wifi.cpp
@@ -33,6 +33,8 @@ extern	uint16_t	displayPoints;
 extern	uint16_t	xDelta;
 extern	uint16_t	waterfallHeight;
 
+extern	unsigned long	sweepMicros;				// To report the scan time
+
 
 extern	int	 	bpfCount;				// Number of elements in the bandpassFilters array
 extern	int		updateSidebar;		// Flag to indicate no of clients has changed
diff --git a/simpleSA_wifi.h b/simpleSA_wifi.h
index c31a672..a0acc22 100644
--- a/simpleSA_wifi.h
+++ b/simpleSA_wifi.h
@@ -51,6 +51,7 @@
 	void 		pushIFSweepSettings ();
 	void 		pushRXSweepSettings ();
 	void 		pushBandscopeSettings ();
+	void		initChunkSweepDoc (uint32_t startIndex);
 
 /*
  *	Functions outside of "TinySA_wifi: