diff --git a/sa_cmd.c b/sa_cmd.c
index 180bbd6..f2dd145 100644
--- a/sa_cmd.c
+++ b/sa_cmd.c
@@ -457,6 +457,8 @@ VNA_SHELL_FUNCTION(cmd_ultra_start)
   } else {
     freq_t a = (freq_t)my_atoi(argv[0]);
     config.ultra_threshold = a;
+    ultra_threshold = (config.ultra_threshold == 0 ? DEFAULT_ULTRA_THRESHOLD : config.ultra_threshold);
+    dirty = true;
     config_save();
   }
 }
diff --git a/sa_core.c b/sa_core.c
index 8255f21..ba0da0a 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1756,6 +1756,8 @@ pureRSSI_t get_frequency_correction(freq_t f)      // Frequency dependent RSSI c
     return(0.0);
   }
 #ifdef TINYSA4
+  if (setting.extra_lna)
+    c += 1;
   if (setting.mode == M_LOW && ultra && f > ultra_threshold) {
     c = CORRECTION_LOW_ULTRA;
     if ( f > ULTRA_MAX_FREQ) {