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-rw-r--r--gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py b/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
index 0563840ff..70024f1e9 100644
--- a/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
+++ b/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
@@ -245,7 +245,7 @@ class dqpsk_demod(gr.hier_block):
costas_order = 4
# The value of beta is now set to be underdamped; this value can have a huge impact on the
# performance of QPSK. Set to 0.25 for critically damped or higher for underdamped responses.
- beta = .5 0 * self._costas_alpha * self._costas_alpha
+ beta = .35 * self._costas_alpha * self._costas_alpha
self.costas_loop = gr.costas_loop_cc(self._costas_alpha, beta, 0.02, -0.02, costas_order)
# RRC data filter