diff --git a/src/main_3300.py b/src/main_3300.py
index 2c6d90b..c8e01c1 100644
--- a/src/main_3300.py
+++ b/src/main_3300.py
@@ -96,7 +96,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_freq_corr(0, 0)
         self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)
diff --git a/src/main_433.py b/src/main_433.py
index e5f7c1b..95ab1db 100644
--- a/src/main_433.py
+++ b/src/main_433.py
@@ -94,9 +94,9 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_sample_rate(samp_rate)
         self.rtlsdr_source_0.set_center_freq(center_freq, 0)
         self.rtlsdr_source_0.set_freq_corr(0, 0)
-        self.rtlsdr_source_0.set_gain(10, 0)
+        self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)
diff --git a/src/main_4500.py b/src/main_4500.py
index d0ccd45..0d75120 100644
--- a/src/main_4500.py
+++ b/src/main_4500.py
@@ -96,7 +96,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_freq_corr(0, 0)
         self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)
diff --git a/src/main_5200.py b/src/main_5200.py
index 3db6065..3c015df 100644
--- a/src/main_5200.py
+++ b/src/main_5200.py
@@ -95,7 +95,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_freq_corr(0, 0)
         self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)
diff --git a/src/main_5800.py b/src/main_5800.py
index f3424ab..d9a566b 100644
--- a/src/main_5800.py
+++ b/src/main_5800.py
@@ -94,7 +94,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_sample_rate(samp_rate)
         self.rtlsdr_source_0.set_center_freq(center_freq, 0)
         self.rtlsdr_source_0.set_freq_corr(0, 0)
-        self.rtlsdr_source_0.set_gain(5, 0)
+        self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
         self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
diff --git a/src/main_750.py b/src/main_750.py
index cd9570a..0d51381 100644
--- a/src/main_750.py
+++ b/src/main_750.py
@@ -96,7 +96,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_freq_corr(0, 0)
         self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)
diff --git a/src/main_868.py b/src/main_868.py
index c4027de..cb9e4a7 100644
--- a/src/main_868.py
+++ b/src/main_868.py
@@ -96,7 +96,7 @@ class get_center_freq(gr.top_block):
         self.rtlsdr_source_0.set_freq_corr(0, 0)
         self.rtlsdr_source_0.set_gain(100, 0)
         self.rtlsdr_source_0.set_if_gain(100, 0)
-        self.rtlsdr_source_0.set_bb_gain(0, 0)
+        self.rtlsdr_source_0.set_bb_gain(100, 0)
         self.rtlsdr_source_0.set_antenna('', 0)
         self.rtlsdr_source_0.set_bandwidth(0, 0)
         self.rtlsdr_source_0.set_min_output_buffer(4096)