diff --git a/main.c b/main.c
index cd83606..af405b4 100644
--- a/main.c
+++ b/main.c
@@ -2103,16 +2103,21 @@ VNA_SHELL_FUNCTION(cmd_help)
   (void)argc;
   (void)argv;
   const VNAShellCommand *scp = commands;
+#ifdef TINYSA4
   shell_printf("config.ini commands:");
+#endif
   while (scp->sc_name != NULL
 #ifdef __SINGLE_LETTER__
       && scp->sc_function != cmd_y
 #endif
       )   {
+#ifdef TINYSA4
     if (scp->flags & CMD_RUN_IN_LOAD)
+#endif
       shell_printf(" %s", scp->sc_name);
     scp++;
   }
+#ifdef TINYSA4
   scp = commands;
   shell_printf("\r\nOther commands:");
   while (scp->sc_name != NULL
@@ -2124,7 +2129,8 @@ VNA_SHELL_FUNCTION(cmd_help)
     shell_printf(" %s", scp->sc_name);
     scp++;
   }
-//  shell_printf("\r\nEnter for more info: {command} ?\r\n");
+#endif
+  shell_printf("\r\n");
   return;
 }
 
diff --git a/nanovna.h b/nanovna.h
index 2f69654..7f7178b 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -52,7 +52,7 @@
 #define __ADF4351__
 #define __NEW_SWITCHES__
 #define __ULTRA_OUT__        // Use ADF output over LOW out
-// #define __SI5351__
+#define __SI5351__
 #endif
 #define __PE4302__
 //#define __SIMULATION__
diff --git a/sa_core.c b/sa_core.c
index 2df9a05..f9ff860 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1020,7 +1020,7 @@ void set_modulation(int m)
 
 void set_modulation_frequency(int f)
 {
-  if (50 <= f && f <= 7000) {
+  if (50 <= f && f <= 6000) {
     setting.modulation_frequency = f;
     dirty = true;
   }
@@ -3176,7 +3176,7 @@ static void calculate_static_correction(void)                   // Calculate the
           - (S_STATE(setting.agc)? 0 : 33)
           - (S_STATE(setting.lna)? 12 : 0)
           + (setting.extra_lna ? -26.5 : 0)                // checked
-          + (setting.mode == M_GENLOW ? (Si446x_get_temp() - 35.0) / 13.0 : 0)      // About 7.7dB per 10 degrees C
+          + (setting.mode == M_GENLOW ? (Si446x_get_temp() - 35.0) / 13.0 : (Si446x_get_temp() - 35.0) / 20.0)      // About 7.7dB per 10 degrees C in output mode, 1 dB per 20 degrees in input mode
 #endif		  
           - setting.external_gain);
 }
diff --git a/ui_sa.c b/ui_sa.c
index f173fcd..5c4d866 100644
--- a/ui_sa.c
+++ b/ui_sa.c
@@ -800,7 +800,7 @@ static UI_FUNCTION_ADV_CALLBACK(menu_output_level_acb)
 }
 
 #ifdef TINYSA4
-static const int item_to_mode[3] = { 0,2,3 };
+static const int item_to_mode[2] = { 0,2 };
 #else
 static const int item_to_mode[4] = { 0,1,2,3 };
 #endif
@@ -2513,7 +2513,7 @@ static const menuitem_t  menu_modulation[] = {
   { MT_FORM | MT_ADV_CALLBACK, MO_NFM,               "Narrow FM", menu_modulation_acb},
   { MT_FORM | MT_ADV_CALLBACK, MO_WFM,               "Wide FM",   menu_modulation_acb},
   { MT_FORM | MT_ADV_CALLBACK | MT_LOW, MO_EXTERNAL, "External",  menu_modulation_acb},
-  { MT_FORM | MT_KEYPAD,   KM_MODULATION,           "FREQ: %s",         "50Hz..6kHz"},
+  { MT_FORM | MT_KEYPAD,   KM_MODULATION,           "FREQ: %s",         "50Hz..5kHz"},
   { MT_FORM | MT_NONE, 0, NULL, menu_back} // next-> menu_back
 };
 
@@ -2526,9 +2526,9 @@ static const menuitem_t  menu_sweep[] = {
 };
 #ifdef TINYSA4
 static const menuitem_t  menu_lowoutput_settings[] = {
-  { MT_FORM | MT_ADV_CALLBACK,  0,              "SQUARE WAVE max 4.4GHz",       menu_lowoutput_settings_acb},
-  { MT_FORM | MT_ADV_CALLBACK,  1,              "MIXER max 5.4GHz",    menu_lowoutput_settings_acb},
-  { MT_FORM | MT_SUBMENU,  255, S_RARROW" Settings", menu_settings},
+  { MT_FORM | MT_ADV_CALLBACK,  0,              "Cleanest signal, max 4.4GHz",       menu_lowoutput_settings_acb},
+  { MT_FORM | MT_ADV_CALLBACK,  1,              "Highest accuracy, max 5.4GHz",    menu_lowoutput_settings_acb},
+  { MT_FORM | MT_SUBMENU,  255, S_RARROW"Expert Settings", menu_settings},
   { MT_FORM | MT_NONE, 0, NULL, menu_back} // next-> menu_back
 };
 #endif
@@ -3182,7 +3182,7 @@ const menuitem_t menu_mode[] = {
 //  { MT_FORM | MT_TITLE,                 0,                      "tinySA MODE",           NULL},
   { MT_FORM | MT_ADV_CALLBACK | MT_ICON,    I_LOW_INPUT+I_SA,       "Spectrum Analyzer",      menu_mode_acb},
   { MT_FORM | MT_ADV_CALLBACK | MT_ICON,    I_LOW_OUTPUT+I_SINUS,   "Signal Generator",     menu_mode_acb},
-  { MT_FORM | MT_ADV_CALLBACK | MT_ICON,    I_HIGH_OUTPUT+I_GEN,    "%s to HIGH out",    menu_mode_acb},
+//  { MT_FORM | MT_ADV_CALLBACK | MT_ICON,    I_HIGH_OUTPUT+I_GEN,    "%s to HIGH out",    menu_mode_acb},
   { MT_FORM | MT_ADV_CALLBACK | MT_ICON,    I_CONNECT+I_GEN,        "Calibration Output: %s",   menu_sreffer_acb},
   { MT_FORM | MT_NONE,     0, NULL, NULL } // sentinel
 };