diff --git a/op25/gr-op25_repeater/apps/tx/dv_tx.py b/op25/gr-op25_repeater/apps/tx/dv_tx.py
index d3f6082..4667d4a 100755
--- a/op25/gr-op25_repeater/apps/tx/dv_tx.py
+++ b/op25/gr-op25_repeater/apps/tx/dv_tx.py
@@ -42,7 +42,7 @@ RC_FILTER = {'dmr': 'rrc', 'p25': 'rc', 'ysf': 'rrc', 'dstar': None}
 output_gains = {
 	'dmr': 5.5,
 	'dstar': 0.95,
-	'p25': 5.0,
+	'p25': 4.5,
 	'ysf': 5.5
 }
 gain_adjust = {
diff --git a/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py b/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
index ace2be3..2c77bd5 100755
--- a/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
+++ b/op25/gr-op25_repeater/apps/tx/op25_c4fm_mod.py
@@ -203,7 +203,7 @@ class p25_mod_bf(gr.hier_block2):
         if rc:
             coeffs = filter.firdes.root_raised_cosine(1.0, output_sample_rate, input_sample_rate, 0.2, 91)
         if rc == 'rc':
-            coeffs = np.convolve(coeffs, coeffs)
+            coeffs = c4fm_taps(sample_rate=output_sample_rate).generate()
         elif self.dstar:
             coeffs = gmsk_taps(sample_rate=output_sample_rate, bt=self.bt).generate()
         elif not rc: