diff --git a/main.c b/main.c
index a829820..080e2c0 100644
--- a/main.c
+++ b/main.c
@@ -174,7 +174,7 @@ static THD_FUNCTION(Thread1, arg)
       b.mode = setting.mode;
       b.checksum = 0;
       uint8_t *c = (uint8_t *)&b;
-      int ci = USED_BACKUP_SIZE*4;
+      int ci = sizeof(backup_t)-1;  // Exclude checksum
       uint8_t checksum = 0x55;
       while (ci--) {
         checksum ^= *c++;
@@ -3057,7 +3057,7 @@ int main(void)
     while (i--)
       *t++ = *f++;
     uint8_t *c = (uint8_t *)&b;
-    int ci = USED_BACKUP_SIZE*3;
+    int ci = sizeof(backup_t)-1;
     uint8_t checksum = 0x55;
     while (ci--) {
       checksum ^= *c++;
@@ -3088,20 +3088,20 @@ int main(void)
           set_sweep_frequency(ST_SPAN, (b.frequency1 - b.frequency0));
           ui_mode_menu();
         }
-        if (b.attenuation == 0)
+        if (b.attenuation == 0) {
           set_auto_attenuation();
-        else {
+        } else {
           set_attenuation((b.attenuation - 1)/2.0);
         }
-        if (b.reflevel == 0)
+        if (b.reflevel == 0) {
           set_auto_reflevel(true);
-        else {
+        } else {
           set_auto_reflevel(false);
           user_set_reflevel((float)(b.reflevel-140));
         }
-        if (b.RBW == 0)
+        if (b.RBW == 0) {
           setting.rbw_x10 = 0;
-        else {
+        } else {
           set_RBW(force_rbw(b.RBW-1));
         }
       }
diff --git a/nanovna.h b/nanovna.h
index 9bec275..5ab3b90 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -1831,7 +1831,8 @@ extern int signal_path;
 extern int test_path;
 extern int force_signal_path;
 
-
+extern uint16_t R;
+extern uint8_t rfPower;
 extern void ADF4351_mux(int R);
 extern void ADF4351_force_refresh(void);
 extern void ADF4351_CP(int p);
diff --git a/sa_core.c b/sa_core.c
index 22e1681..b82cb86 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -4071,7 +4071,7 @@ again:                                                              // Spur redu
 
 #ifdef __ULTRA__
           if (S_IS_AUTO(setting.below_IF)) {
-            if ((freq_t)lf > MAX_ABOVE_IF_FREQ && lf <= ULTRA_MAX_FREQ )
+            if ((freq_t)lf > MAX_ABOVE_IF_FREQ && lf <= ULTRA_MAX_FREQ && !LO_harmonic)
               setting.below_IF = S_AUTO_ON; // Only way to reach this range. Use below IF in harmonic mode
             else
               setting.below_IF = S_AUTO_OFF; // default is above IF, Use below IF in harmonic mode
@@ -4337,11 +4337,12 @@ again:                                                              // Spur redu
             }
           } else if (lf < 25000000 && max2871) {
             ADF4351_R_counter(-1);
+            ADF4351_modulo(200);
           } else if (lf > 8000000 && lf < 3000000000 && MODE_INPUT(setting.mode)) {
             if (max2871)
             if (local_modulo == 0) {
               if (max2871)
-                ADF4351_modulo(4000);
+                ADF4351_modulo(100);
               else
                 ADF4351_modulo(4000);
             }
@@ -4384,8 +4385,11 @@ again:                                                              // Spur redu
                   ADF4351_R_counter(3);     // To avoid PLL Loop shoulders
               } else
                 ADF4351_R_counter(1);
-            } else
+            }
+            else if (max2871)
               ADF4351_R_counter(1);
+            else
+              ADF4351_R_counter(2);
 
           } else {                          // Input above 800 MHz
             if (local_modulo == 0) {
@@ -4403,10 +4407,13 @@ again:                                                              // Spur redu
               ADF4351_R_counter(3);
             } else
 #endif
+            if (max2871)
               ADF4351_R_counter(1); // Used to be 1
+            else
+              ADF4351_R_counter(2); // Used to be 1
           }
         } else {
-          ADF4351_R_counter(setting.R);
+          ADF4351_R_counter(setting.R%1000);
         }
         }
 #endif          // __ADF4351__
@@ -4610,14 +4617,15 @@ again:                                                              // Spur redu
      }
      char shifted = ( LO_spur_shifted ? '>' : ' ');
      if (SDU1.config->usbp->state == USB_ACTIVE)
-       shell_printf ("%d:%c%c%c%cLO=%11.6Lq:%11.6Lq\tIF=%11.6Lq:%11.6Lq\tOF=%11.6d\tF=%11.6Lq:%11.6Lq\tD=%.2f:%.2f %c%c%c %d\r\n",
+       shell_printf ("%d:%c%c%c%cLO=%11.6Lq:%11.6Lq\tIF=%11.6Lq:%11.6Lq\tOF=%11.6d\tF=%11.6Lq:%11.6Lq\tD=%.2f:%.2f %c%c%c %d R=%d mod=%d, d=%d\r\n",
                      i,   spur, shifted,(LO_mirrored ? 'm' : ' '), (LO_harmonic ? 'h':' ' ),
                      old_freq[ADF4351_LO],real_old_freq[ADF4351_LO],
                      old_freq[SI4463_RX], real_old_freq[SI4463_RX], (int32_t)real_offset, f_low, f_high , f_error_low, f_error_high,
                      (ADF4351_frequency_changed? 'A' : ' '),
                      (SI4463_frequency_changed? 'S' : ' '),
                      (SI4463_offset_changed? 'O' : ' '),
-                     correct_RSSI_freq
+                     correct_RSSI_freq,
+                     R, ADF4351_get_modulo(),rfPower
                     );
      osalThreadSleepMilliseconds(100);
     }
diff --git a/si4468.c b/si4468.c
index 0a7692d..13a95a0 100644
--- a/si4468.c
+++ b/si4468.c
@@ -290,7 +290,7 @@ uint16_t R = 1;
 int old_R = 0;
 uint16_t N = 1;
 uint16_t frac = 0;
-uint16_t modulus = 32;
+uint16_t modulus = 200;
 uint16_t out_div = 0;
 uint16_t mux = 0;
 uint16_t csr = 1;  // cycle slip reduction, if enabled cp must be lowest value
@@ -310,7 +310,7 @@ bool pdwn = false;
 uint16_t powerDown = 0;
 
 
-static const uint8_t auxPower = 0b00;
+static const uint8_t auxPower = 0b11;
 
 // band select divider. 1 to 255.
 volatile uint16_t  bsDivider = 100; // For set internal logic clock (24M / 192 = 125k) max 125k
@@ -349,7 +349,7 @@ static enum {
     LD_LOW_NOISE = 0b00,
     LD_LOW_SPUR1 = 0b10,
     LD_LOW_SPUR2 = 0b11
-} noiseMode = LD_LOW_NOISE;
+} noiseMode = LD_LOW_SPUR1;
 
 /*
 static const enum {
@@ -617,7 +617,7 @@ uint16_t ADF4351_get_modulo(void)
 
 void ADF4351_spur_mode(int S)
 {
-  noiseMode = S;
+//  noiseMode = S;
 }
 
 void ADF4351_R_counter(int new_R)