1 files changed, 63 insertions, 0 deletions
diff --git a/gr-channels/python/channels/amp_bal.py b/gr-channels/python/channels/amp_bal.py
new file mode 100644
index 0000000000..30e0f0d8e2
--- /dev/null
+++ b/gr-channels/python/channels/amp_bal.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+##################################################
+# Gnuradio Python Flow Graph
+# Title: Amplitude Balance
+# Author: mettus
+# Description: Restores IQ amplitude balance
+# Generated: Thu Aug  1 11:47:46 2013
+##################################################
+
+from gnuradio import blocks
+from gnuradio import gr
+from gnuradio.filter import firdes
+
+class amp_bal(gr.hier_block2):
+
+    def __init__(self, alpha=0):
+        gr.hier_block2.__init__(
+            self, "Amplitude Balance",
+            gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
+            gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
+        )
+
+        ##################################################
+        # Parameters
+        ##################################################
+        self.alpha = alpha
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.blocks_rms_xx0 = blocks.rms_ff(alpha)
+        self.blocks_rms_xx = blocks.rms_ff(alpha)
+        self.blocks_multiply_vxx1 = blocks.multiply_vff(1)
+        self.blocks_float_to_complex = blocks.float_to_complex(1)
+        self.blocks_divide_xx = blocks.divide_ff(1)
+        self.blocks_complex_to_float = blocks.complex_to_float(1)
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.blocks_float_to_complex, 0), (self, 0))
+        self.connect((self, 0), (self.blocks_complex_to_float, 0))
+        self.connect((self.blocks_complex_to_float, 0), (self.blocks_rms_xx, 0))
+        self.connect((self.blocks_complex_to_float, 1), (self.blocks_rms_xx0, 0))
+        self.connect((self.blocks_rms_xx, 0), (self.blocks_divide_xx, 0))
+        self.connect((self.blocks_rms_xx0, 0), (self.blocks_divide_xx, 1))
+        self.connect((self.blocks_complex_to_float, 0), (self.blocks_float_to_complex, 0))
+        self.connect((self.blocks_complex_to_float, 1), (self.blocks_multiply_vxx1, 1))
+        self.connect((self.blocks_divide_xx, 0), (self.blocks_multiply_vxx1, 0))
+        self.connect((self.blocks_multiply_vxx1, 0), (self.blocks_float_to_complex, 1))
+
+
+# QT sink close method reimplementation
+
+    def get_alpha(self):
+        return self.alpha
+
+    def set_alpha(self, alpha):
+        self.alpha = alpha
+        self.blocks_rms_xx.set_alpha(self.alpha)
+        self.blocks_rms_xx0.set_alpha(self.alpha)
+
+