diff --git a/tnc/modem.py b/tnc/modem.py
index bdc2b3d7..b8a1d2ed 100644
--- a/tnc/modem.py
+++ b/tnc/modem.py
@@ -66,11 +66,7 @@ class RF:
 
         self.AUDIO_FRAMES_PER_BUFFER_RX = 2400 * 2  # 8192
         # 8192 Let's do some tests with very small chunks for TX
-        if not static.AUDIO_ENABLE_TCI:
-            self.AUDIO_FRAMES_PER_BUFFER_TX = 2400 * 2
-        else:
-            self.AUDIO_FRAMES_PER_BUFFER_TX = 1200
-
+        self.AUDIO_FRAMES_PER_BUFFER_TX = 1200 if static.AUDIO_ENABLE_TCI else 2400 * 2
         # 8 * (self.AUDIO_SAMPLE_RATE_RX/self.MODEM_SAMPLE_RATE) == 48
         self.AUDIO_CHANNELS = 1
         self.MODE = 0
@@ -105,55 +101,55 @@ class RF:
         # DATAC0
         # SIGNALLING MODE 0 - Used for Connecting - Payload 14 Bytes
         self.sig0_datac0_freedv, \
-            self.sig0_datac0_bytes_per_frame, \
-            self.sig0_datac0_bytes_out, \
-            self.sig0_datac0_buffer, \
-            self.sig0_datac0_nin = \
-            self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC0, None)
+                self.sig0_datac0_bytes_per_frame, \
+                self.sig0_datac0_bytes_out, \
+                self.sig0_datac0_buffer, \
+                self.sig0_datac0_nin = \
+                self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC0, None)
 
         # DATAC0
         # SIGNALLING MODE 1 - Used for ACK/NACK - Payload 5 Bytes
         self.sig1_datac0_freedv, \
-            self.sig1_datac0_bytes_per_frame, \
-            self.sig1_datac0_bytes_out, \
-            self.sig1_datac0_buffer, \
-            self.sig1_datac0_nin = \
-            self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC0, None)
+                self.sig1_datac0_bytes_per_frame, \
+                self.sig1_datac0_bytes_out, \
+                self.sig1_datac0_buffer, \
+                self.sig1_datac0_nin = \
+                self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC0, None)
 
         # DATAC1
         self.dat0_datac1_freedv, \
-            self.dat0_datac1_bytes_per_frame, \
-            self.dat0_datac1_bytes_out, \
-            self.dat0_datac1_buffer, \
-            self.dat0_datac1_nin = \
-            self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC1, None)
+                self.dat0_datac1_bytes_per_frame, \
+                self.dat0_datac1_bytes_out, \
+                self.dat0_datac1_buffer, \
+                self.dat0_datac1_nin = \
+                self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC1, None)
 
         # DATAC3
         self.dat0_datac3_freedv, \
-            self.dat0_datac3_bytes_per_frame, \
-            self.dat0_datac3_bytes_out, \
-            self.dat0_datac3_buffer, \
-            self.dat0_datac3_nin = \
-            self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC3, None)
+                self.dat0_datac3_bytes_per_frame, \
+                self.dat0_datac3_bytes_out, \
+                self.dat0_datac3_buffer, \
+                self.dat0_datac3_nin = \
+                self.init_codec2_mode(codec2.api.FREEDV_MODE_DATAC3, None)
 
         # FSK LDPC - 0
         self.fsk_ldpc_freedv_0, \
-            self.fsk_ldpc_bytes_per_frame_0, \
-            self.fsk_ldpc_bytes_out_0, \
-            self.fsk_ldpc_buffer_0, \
-            self.fsk_ldpc_nin_0 = \
-            self.init_codec2_mode(
+                self.fsk_ldpc_bytes_per_frame_0, \
+                self.fsk_ldpc_bytes_out_0, \
+                self.fsk_ldpc_buffer_0, \
+                self.fsk_ldpc_nin_0 = \
+                self.init_codec2_mode(
                 codec2.api.FREEDV_MODE_FSK_LDPC,
                 codec2.api.FREEDV_MODE_FSK_LDPC_0_ADV
             )
 
         # FSK LDPC - 1
         self.fsk_ldpc_freedv_1, \
-            self.fsk_ldpc_bytes_per_frame_1, \
-            self.fsk_ldpc_bytes_out_1, \
-            self.fsk_ldpc_buffer_1, \
-            self.fsk_ldpc_nin_1 = \
-            self.init_codec2_mode(
+                self.fsk_ldpc_bytes_per_frame_1, \
+                self.fsk_ldpc_bytes_out_1, \
+                self.fsk_ldpc_buffer_1, \
+                self.fsk_ldpc_nin_1 = \
+                self.init_codec2_mode(
                 codec2.api.FREEDV_MODE_FSK_LDPC,
                 codec2.api.FREEDV_MODE_FSK_LDPC_1_ADV
             )
diff --git a/tnc/tci.py b/tnc/tci.py
index 4876729d..6739d9a1 100644
--- a/tnc/tci.py
+++ b/tnc/tci.py
@@ -312,7 +312,7 @@ class TCI:
 
     def get_ptt(self):
         """ """
-        self.ws.send(f'trx:0;')
+        self.ws.send('trx:0;')
         return self.ptt
 
     def close_rig(self):