diff --git a/Source/Receiver.cpp b/Source/Receiver.cpp
index 9ddd849..0f933f3 100644
--- a/Source/Receiver.cpp
+++ b/Source/Receiver.cpp
@@ -30,7 +30,7 @@ const radio_float_t		STR_GAIN_LAG_TRK	= (radio_float_t)1.00E-7;		// 1E-6
 const radio_float_t		AGC_MIN_VALUE			= (radio_float_t)1.0;
 const radio_float_t		AGC_MAX_VALUE			= (radio_float_t)4.0;
 const radio_float_t		AGC_INITIAL_VALUE		= (radio_float_t)2.0;
-const radio_float_t		AGC_ADAPTION_RATE_ACQ	= (radio_float_t)0.01;
+const radio_float_t		AGC_ADAPTION_RATE_ACQ	= (radio_float_t)0.001;
 const radio_float_t		AGC_ADAPTION_RATE_TRK	= (radio_float_t)0.0001;
 
 const uint32_t			EQ_UPD_INTERVAL		= 2000;					// 1000
@@ -517,7 +517,7 @@ void Receiver::processBaseband(CVec const &iq, size_t len)
 		{
 			if (m_params.agcMu_index == agc_state_acquisition)
 			{
-				e_agc = 1.0 - CpxMagS(getTracker(0));
+				e_agc = (1.0 - CpxMagS(getTracker(0)))*CpxMagS(getTracker(0));
 				AGC_Train(&agcBlind, e_agc, m_params.agcMu[m_params.agcMu_index]);
 			}
 			if (m_params.agcMu_index == agc_state_track)