diff --git a/tnc/modem.py b/tnc/modem.py
index cda7f514..fbffa63a 100644
--- a/tnc/modem.py
+++ b/tnc/modem.py
@@ -874,7 +874,7 @@ class RF:
                     # Have to do this when we are not transmitting so our
                     # own sending data will not affect this too much
                     if not static.TRANSMITTING:
-                        dfft[dfft > avg + 10] = 100
+                        dfft[dfft > avg + 15] = 100
 
                         # Calculate audio dbfs
                         # https://stackoverflow.com/a/9763652
@@ -917,15 +917,12 @@ class RF:
                     # Check for signals higher than average by checking for "100"
                     # If we have a signal, increment our channel_busy delay counter
                     # so we have a smoother state toggle
-                    if np.sum(dfft[dfft > avg + 10]) >= 400 and not static.TRANSMITTING:
+                    if np.sum(dfft[dfft > avg + 15]) >= 400 and not static.TRANSMITTING:
                         static.CHANNEL_BUSY = True
                         # Limit delay counter to a maximum of 250. The higher this value,
                         # the longer we will wait until releasing state
                         channel_busy_delay = min(channel_busy_delay + 10, 250)
                     else:
-                        # if transmitting set busy delay to 0 for avoiding too much false positives
-                        if static.TRANSMITTING:
-                            channel_busy_delay = 0
                         # Decrement channel busy counter if no signal has been detected.
                         channel_busy_delay = max(channel_busy_delay - 1, 0)
                         # When our channel busy counter reaches 0, toggle state to False