diff --git a/grc/gen_osmosdr_blocks.py b/grc/gen_osmosdr_blocks.py
index ecf7dcc..174c591 100644
--- a/grc/gen_osmosdr_blocks.py
+++ b/grc/gen_osmosdr_blocks.py
@@ -253,7 +253,7 @@ Lines ending with ... mean it's possible to bind devices together by specifying
   sdr-iq=/dev/ttyUSB0
   airspy=0[,bias=0|1]
 #end if
-  hackrf=0[,buffers=32]
+  hackrf=0[,buffers=32][,bias=0|1][,bias_tx=0|1]
   bladerf=0[,fpga='/path/to/the/bitstream.rbf']
   uhd[,serial=...][,lo_offset=0][,mcr=52e6][,nchan=2][,subdev='\\\\'B:0 A:0\\\\''] ...
 
diff --git a/lib/hackrf/hackrf_sink_c.cc b/lib/hackrf/hackrf_sink_c.cc
index 00f9768..60ef5ce 100644
--- a/lib/hackrf/hackrf_sink_c.cc
+++ b/lib/hackrf/hackrf_sink_c.cc
@@ -56,6 +56,10 @@ using namespace boost::assign;
 
 #define BYTES_PER_SAMPLE  2 /* HackRF device consumes 8 bit unsigned IQ data */
 
+#define HACKRF_FORMAT_ERROR(ret) \
+  boost::str( boost::format("(%d) %s") \
+    % ret % hackrf_error_name((enum hackrf_error)ret) ) \
+
 #define HACKRF_THROW_ON_ERROR(ret, msg) \
   if ( ret != HACKRF_SUCCESS )  \
   throw std::runtime_error( boost::str( boost::format(msg " (%d) %s") \
@@ -218,6 +222,20 @@ hackrf_sink_c::hackrf_sink_c (const std::string &args)
 
   set_if_gain( 16 ); /* preset to a reasonable default (non-GRC use case) */
 
+  // Check device args to find out if bias/phantom power is desired.
+  if ( dict.count("bias_tx") ) {
+    bool bias = boost::lexical_cast<bool>( dict["bias_tx"] );
+    ret = hackrf_set_antenna_enable(_dev, static_cast<uint8_t>(bias));
+    if ( ret != HACKRF_SUCCESS )
+    {
+      std::cerr << "Failed to apply antenna bias voltage state: " << bias << " " << HACKRF_FORMAT_ERROR(ret) << std::endl;
+    }
+    else
+    {
+      std::cerr << (bias ? "Enabled" : "Disabled") << " antenna bias voltage" << std::endl;
+    }
+  }
+
   _buf = (char *) malloc( BUF_LEN );
 
   cb_init( &_cbuf, _buf_num, BUF_LEN );
diff --git a/lib/hackrf/hackrf_source_c.cc b/lib/hackrf/hackrf_source_c.cc
index e3b3ea4..c845840 100644
--- a/lib/hackrf/hackrf_source_c.cc
+++ b/lib/hackrf/hackrf_source_c.cc
@@ -49,6 +49,10 @@ using namespace boost::assign;
 
 #define BYTES_PER_SAMPLE  2 /* HackRF device produces 8 bit unsigned IQ data */
 
+#define HACKRF_FORMAT_ERROR(ret) \
+  boost::str( boost::format("(%d) %s") \
+    % ret % hackrf_error_name((enum hackrf_error)ret) ) \
+
 #define HACKRF_THROW_ON_ERROR(ret, msg) \
   if ( ret != HACKRF_SUCCESS )  \
   throw std::runtime_error( boost::str( boost::format(msg " (%d) %s") \
@@ -174,6 +178,20 @@ hackrf_source_c::hackrf_source_c (const std::string &args)
 
   set_bb_gain( 20 ); /* preset to a reasonable default (non-GRC use case) */
 
+  // Check device args to find out if bias/phantom power is desired.
+  if ( dict.count("bias") ) {
+    bool bias = boost::lexical_cast<bool>( dict["bias"] );
+    ret = hackrf_set_antenna_enable(_dev, static_cast<uint8_t>(bias));
+    if ( ret != HACKRF_SUCCESS )
+    {
+      std::cerr << "Failed to apply antenna bias voltage state: " << bias << " " << HACKRF_FORMAT_ERROR(ret) << std::endl;
+    }
+    else
+    {
+      std::cerr << (bias ? "Enabled" : "Disabled") << " antenna bias voltage" << std::endl;
+    }
+  }
+
   _buf = (unsigned short **) malloc(_buf_num * sizeof(unsigned short *));
 
   if (_buf) {