diff --git a/IO.cpp b/IO.cpp
index f6e73a8..35d4a7a 100644
--- a/IO.cpp
+++ b/IO.cpp
@@ -28,11 +28,6 @@ static q15_t RRC_0_2_FILTER[] = {401, 104, -340, -731, -847, -553, 112, 909, 147
                                    -553, -847, -731, -340, 104, 401, 0};
 const uint16_t RRC_0_2_FILTER_LEN = 42U;
 
-// Generated using rcosdesign(0.2, 8, 5, 'normal') in MATLAB
-static q15_t RC_0_2_FILTER[] = {0, -413, -750, -845, -587, 0, 741, 1347, 1520, 1062, 0, -1383, -2582, -3021, -2222, 0, 3434, 7487, 11318, 14054, 15044, 14054,
-                                   11318, 7487, 3434, 0, -2222, -3021, -2582, -1383, 0, 1062, 1520, 1347, 741, 0, -587, -845, -750, -413};
-const uint16_t RC_0_2_FILTER_LEN = 40U;
-
 // Generated using gaussfir(0.5, 4, 5) in MATLAB
 static q15_t   GAUSSIAN_0_5_FILTER[] = {8, 104, 760, 3158, 7421, 9866, 7421, 3158, 760, 104, 8, 0};
 const uint16_t GAUSSIAN_0_5_FILTER_LEN = 12U;
@@ -49,11 +44,9 @@ m_rxBuffer(RX_RINGBUFFER_SIZE),
 m_txBuffer(TX_RINGBUFFER_SIZE),
 m_rssiBuffer(RX_RINGBUFFER_SIZE),
 m_rrcFilter(),
-m_rcFilter(),
 m_gaussianFilter(),
 m_boxcarFilter(),
 m_rrcState(),
-m_rcState(),
 m_gaussianState(),
 m_boxcarState(),
 m_pttInvert(false),
@@ -72,7 +65,6 @@ m_watchdog(0U),
 m_lockout(false)
 {
   ::memset(m_rrcState,      0x00U, 70U * sizeof(q15_t));
-  ::memset(m_rcState,       0x00U, 70U * sizeof(q15_t));
   ::memset(m_gaussianState, 0x00U, 40U * sizeof(q15_t));
   ::memset(m_boxcarState,   0x00U, 30U * sizeof(q15_t));
 
@@ -80,10 +72,6 @@ m_lockout(false)
   m_rrcFilter.pState  = m_rrcState;
   m_rrcFilter.pCoeffs = RRC_0_2_FILTER;
 
-  m_rcFilter.numTaps = RC_0_2_FILTER_LEN;
-  m_rcFilter.pState  = m_rcState;
-  m_rcFilter.pCoeffs = RC_0_2_FILTER;
-
   m_gaussianFilter.numTaps = GAUSSIAN_0_5_FILTER_LEN;
   m_gaussianFilter.pState  = m_gaussianState;
   m_gaussianFilter.pCoeffs = GAUSSIAN_0_5_FILTER;
@@ -229,13 +217,10 @@ void CIO::process()
       }
     } else if (m_modemState == STATE_P25) {
       if (m_p25Enable) {
-        q15_t P25Vals1[RX_BLOCK_SIZE];
-        ::arm_fir_fast_q15(&m_boxcarFilter, samples, P25Vals1, RX_BLOCK_SIZE);
+        q15_t P25Vals[RX_BLOCK_SIZE];
+        ::arm_fir_fast_q15(&m_boxcarFilter, samples, P25Vals, RX_BLOCK_SIZE);
 
-        q15_t P25Vals2[RX_BLOCK_SIZE];
-        ::arm_fir_fast_q15(&m_rcFilter, P25Vals1, P25Vals2, RX_BLOCK_SIZE);
-
-        p25RX.samples(P25Vals2, rssi, RX_BLOCK_SIZE);
+        p25RX.samples(P25Vals, rssi, RX_BLOCK_SIZE);
       }
     } else if (m_modemState == STATE_DSTARCAL) {
       q15_t GMSKVals[RX_BLOCK_SIZE];
diff --git a/IO.h b/IO.h
index 339b4ac..80a6d28 100644
--- a/IO.h
+++ b/IO.h
@@ -61,11 +61,9 @@ private:
   CRSSIRB              m_rssiBuffer;
 
   arm_fir_instance_q15 m_rrcFilter;
-  arm_fir_instance_q15 m_rcFilter;
   arm_fir_instance_q15 m_gaussianFilter;
   arm_fir_instance_q15 m_boxcarFilter;
   q15_t                m_rrcState[70U];           // NoTaps + BlockSize - 1, 42 + 20 - 1 plus some spare
-  q15_t                m_rcState[70U];            // NoTaps + BlockSize - 1, 42 + 20 - 1 plus some spare
   q15_t                m_gaussianState[40U];      // NoTaps + BlockSize - 1, 12 + 20 - 1 plus some spare
   q15_t                m_boxcarState[30U];        // NoTaps + BlockSize - 1, 6 + 20 - 1 plus some spare