diff --git a/RX_FSK/RX_FSK.ino b/RX_FSK/RX_FSK.ino
index b29c2b0..e8ed1cf 100644
--- a/RX_FSK/RX_FSK.ino
+++ b/RX_FSK/RX_FSK.ino
@@ -22,7 +22,7 @@
 #include "rs92gps.h"
 #include "mqtt.h"
 #include "esp_heap_caps.h"
-
+//#define ESP_MEM_DEBUG 1
 int e;
 
 enum MainState { ST_DECODER, ST_SPECTRUM, ST_WIFISCAN, ST_UPDATE, ST_TOUCHCALIB };
@@ -476,7 +476,7 @@ struct st_configitems config_list[] = {
   {"startfreq", "Startfreq (MHz)", 0, &sonde.config.startfreq},
   {"channelbw", "Bandwidth (kHz)", 0, &sonde.config.channelbw},
   {"marker", "Spectrum MHz marker", 0, &sonde.config.marker},
-  {"noisefloor", "Sepctrum noisefloor", 0, &sonde.config.noisefloor},
+  {"noisefloor", "Spectrum noisefloor", 0, &sonde.config.noisefloor},
   /* decoder settings */
   {"", "Receiver configuration", -5, NULL},
   {"showafc", "Show AFC value", 0, &sonde.config.showafc},
@@ -970,7 +970,9 @@ void SetupAsyncServer() {
 
   // Route to load style.css file
   server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest * request) {
-    request->send(SPIFFS, "/style.css", "text/css");
+    AsyncWebServerResponse *response = request->beginResponse(SPIFFS, "/style.css", "text/css");
+    response->addHeader("Cache-Control","max-age=86400");
+    request->send(response);
   });
 
   // Route to set GPIO to HIGH
diff --git a/RX_FSK/data/index.html b/RX_FSK/data/index.html
index 24d4c08..e0acb1d 100644
--- a/RX_FSK/data/index.html
+++ b/RX_FSK/data/index.html
@@ -24,19 +24,19 @@
 	  <button class="tablinks" onclick="selTab(event,'About')">About</button>
 </div>
 
-<div id="QRG" class="tabcontent">
+<div id="QRG" class="tabcontent" data-src="qrg.html">
 	<h3> QRG - Setup</h3>
-	<iframe src="qrg.html" style="border:none;" width="100%%" height="100%%"></iframe>
+	<iframe src="" style="border:none;" width="100%%" height="100%%"></iframe>
 </div>
 
-<div id="WiFi" class="tabcontent">
+<div id="WiFi" class="tabcontent" data-src="wifi.html">
 	<h3> WiFi - Settings</h3>
-	<iframe src="wifi.html" style="border:none;" width="100%%" height="100%%"></iframe>
+	<iframe src="" style="border:none;" width="100%%" height="100%%"></iframe>
 </div>
 
 <div id="Data" class="tabcontent" data-src="status.html">
 	<h3>Data</h3>
-	<iframe src="status.html" style="border:none;" width="100%%" height="100%%"></iframe>
+	<iframe src="" style="border:none;" width="100%%" height="100%%"></iframe>
 </div>
 
 <!--
@@ -45,14 +45,14 @@
 </div>
 -->
 
-<div id="Config" class="tabcontent">
+<div id="Config" class="tabcontent" data-src="config.html">
 	<h3>Configuration</h3>
-	<iframe src="config.html" style="border:none;" width="100%%" height="100%%"></iframe>
+	<iframe src="" style="border:none;" width="100%%" height="100%%"></iframe>
 </div>
 
-<div id="Control" class="tabcontent">
+<div id="Control" class="tabcontent" data-src="control.html">
 	<h3>Control</h3>
-	<iframe src="control.html" style="border:none;" width="100%%" height="100%%"></iframe>
+	<iframe src="" style="border:none;" width="100%%" height="100%%"></iframe>
 </div>
 
 <div id="About" class="tabcontent">
diff --git a/RX_FSK/version.h b/RX_FSK/version.h
index 5ca8ea6..43a37ad 100644
--- a/RX_FSK/version.h
+++ b/RX_FSK/version.h
@@ -1,4 +1,4 @@
 const char *version_name = "rdzTTGOsonde";
-const char *version_id = "devel20201227m";
+const char *version_id = "devel20201228";
 const int SPIFFS_MAJOR=2;
-const int SPIFFS_MINOR=6;
+const int SPIFFS_MINOR=7;