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diff --git a/gr-usrp/grc/usrp_simple_sink_x.xml b/gr-usrp/grc/usrp_simple_sink_x.xml
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+++ b/gr-usrp/grc/usrp_simple_sink_x.xml
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+<?xml version="1.0"?>
+<!--
+###################################################
+##USRP Simple Sink
+###################################################
+ -->
+<block>
+	<name>USRP1 Sink</name>
+	<key>usrp_simple_sink_x</key>
+	<category>USRP</category>
+	<import>from grc_gnuradio import usrp as grc_usrp</import>
+	<make>grc_usrp.simple_sink_$(type.fcn)(which=$which, side=$side)
+self.$(id).set_interp_rate($interpolation)
+self.$(id).set_frequency($frequency, verbose=True#slurp
+#if $lo_offset() != float('inf')
+, lo_offset=$lo_offset#slurp
+#end if
+)
+self.$(id).set_gain($gain)
+#if $transmit.tx_enb
+self.$(id).set_enable(True)
+#end if
+#if $transmit.auto_tr
+self.$(id).set_auto_tr(True)
+#end if</make>
+	<callback>set_interp_rate($interpolation)</callback>
+	<callback>set_frequency($frequency#slurp
+#if $lo_offset() != float('inf')
+, lo_offset=$lo_offset#slurp
+#end if
+)</callback>
+	<callback>set_gain($gain)</callback>
+	<param>
+		<name>Input Type</name>
+		<key>type</key>
+		<type>enum</type>
+		<option>
+			<name>Complex</name>
+			<key>complex</key>
+			<opt>fcn:c</opt>
+		</option>
+		<option>
+			<name>Short</name>
+			<key>short</key>
+			<opt>fcn:s</opt>
+		</option>
+	</param>
+	<param>
+		<name>Unit Number</name>
+		<key>which</key>
+		<value>0</value>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Interpolation</name>
+		<key>interpolation</key>
+		<type>int</type>
+	</param>
+	<param>
+		<name>Frequency (Hz)</name>
+		<key>frequency</key>
+		<type>real</type>
+	</param>
+	<param>
+		<name>LO Offset (Hz)</name>
+		<key>lo_offset</key>
+		<value>float('inf')</value>
+		<type>real</type>
+		<hide>#if $lo_offset() == float('inf') then 'part' else 'none'#</hide>
+		<option>
+			<name>Default</name>
+			<key>float('inf')</key>
+		</option>
+	</param>
+	<param>
+		<name>Gain (dB)</name>
+		<key>gain</key>
+		<value>0</value>
+		<type>real</type>
+	</param>
+	<param>
+		<name>Side</name>
+		<key>side</key>
+		<value>A</value>
+		<type>string</type>
+		<option>
+			<name>A</name>
+			<key>A</key>
+		</option>
+		<option>
+			<name>B</name>
+			<key>B</key>
+		</option>
+	</param>
+	<param>
+		<name>Transmit</name>
+		<key>transmit</key>
+		<value></value>
+		<type>enum</type>
+		<hide>#if $transmit.tx_enb then 'none' else 'part'#</hide>
+		<option>
+			<name>Unconfigured</name>
+			<key></key>
+			<opt>tx_enb:</opt>
+			<opt>auto_tr:</opt>
+		</option>
+		<option>
+			<name>Enable</name>
+			<key>tx_enb</key>
+			<opt>tx_enb:1</opt>
+			<opt>auto_tr:</opt>
+		</option>
+		<option>
+			<name>Auto T/R</name>
+			<key>auto_tr</key>
+			<opt>tx_enb:1</opt>
+			<opt>auto_tr:1</opt>
+		</option>
+	</param>
+	<sink>
+		<name>in</name>
+		<type>$type</type>
+	</sink>
+	<doc>
+The USRP sink inputs 128 Megasamples per second / interpolation.
+
+Input amplitude should be between 0 and 32767.
+
+Flex RF boards only: The "Transmit Setting" must be configured. \
+When set to "Enable" the transmitter is always on. \
+When set to "Auto Transmit/Receive", the transmitter is disabled while receiving.
+	</doc>
+</block>