diff --git a/software/gr-caribouLite/grc/caribouLite_caribouLiteSource.block.yml b/software/gr-caribouLite/grc/caribouLite_caribouLiteSource.block.yml
index 9251bce..3512f82 100644
--- a/software/gr-caribouLite/grc/caribouLite_caribouLiteSource.block.yml
+++ b/software/gr-caribouLite/grc/caribouLite_caribouLiteSource.block.yml
@@ -7,7 +7,7 @@ templates:
   imports: 
     from gnuradio import caribouLite
   make: 
-    caribouLite.caribouLiteSource(${channel}, ${enable_agc}, ${rx_gain}, ${rx_bw}, ${sample_rate}, ${freq}, ${provide_sync})
+    caribouLite.caribouLiteSource(${channel}, ${enable_agc}, ${rx_gain}, ${rx_bw}, ${sample_rate}, ${freq}, ${provide_meta})
   
 parameters:
 - id: channel
@@ -40,7 +40,7 @@ parameters:
   dtype: float
   default: 900000000.0
 
-- id: provide_sync
+- id: provide_meta
   dtype: enum
   options: ['True', 'False']
   hide: part
@@ -49,7 +49,7 @@ parameters:
 cpp_templates:
     includes: ['#include <gnuradio/caribouLite/caribouLiteSource.h>']
     declarations: 'caribouLite::caribouLiteSource::sptr ${id};'
-    make: 'this->${id} = caribouLite::caribouLiteSource::make(${channel}, ${enable_agc}, ${rx_gain}, ${rx_bw}, ${sample_rate}, ${freq}, ${provide_sync});'
+    make: 'this->${id} = caribouLite::caribouLiteSource::make(${channel}, ${enable_agc}, ${rx_gain}, ${rx_bw}, ${sample_rate}, ${freq}, ${provide_meta});'
     packages: ['gnuradio-caribouLite']
     link: ['gnuradio::gnuradio-caribouLite']
     translations:
@@ -66,6 +66,6 @@ outputs:
 - label: sync
   domain: stream
   dtype: byte
-  hide: ${False if str(provide_sync)=='True' else True}
+  hide: ${False if str(provide_meta)=='True' else True}
 
 file_format: 1
diff --git a/software/gr-caribouLite/include/gnuradio/caribouLite/caribouLiteSource.h b/software/gr-caribouLite/include/gnuradio/caribouLite/caribouLiteSource.h
index d21747f..848654f 100644
--- a/software/gr-caribouLite/include/gnuradio/caribouLite/caribouLiteSource.h
+++ b/software/gr-caribouLite/include/gnuradio/caribouLite/caribouLiteSource.h
@@ -38,7 +38,7 @@ namespace gr {
                       float rx_bw=2500000,
                       float sample_rate=4000000,
                       float freq=900000000,
-                      bool provide_sync = false);
+                      bool provide_meta = false);
     };
 
   } // namespace caribouLite
diff --git a/software/gr-caribouLite/lib/caribouLiteSource_impl.cc b/software/gr-caribouLite/lib/caribouLiteSource_impl.cc
index d621e27..60dd2dd 100644
--- a/software/gr-caribouLite/lib/caribouLiteSource_impl.cc
+++ b/software/gr-caribouLite/lib/caribouLiteSource_impl.cc
@@ -34,7 +34,7 @@ namespace gr {
                                                     float rx_bw,
                                                     float sample_rate,
                                                     float freq,
-                                                    bool provide_sync)
+                                                    bool provide_meta)
         {
             return gnuradio::make_block_sptr<caribouLiteSource_impl>(channel,
                                                                     enable_agc,
@@ -42,7 +42,7 @@ namespace gr {
                                                                     rx_bw,
                                                                     sample_rate,
                                                                     freq,
-                                                                    provide_sync);
+                                                                    provide_meta);
         }
 
 
@@ -54,10 +54,10 @@ namespace gr {
                                                 float rx_bw,
                                                 float sample_rate,
                                                 float freq,
-                                                bool provide_sync)
+                                                bool provide_meta)
                         : gr::sync_block("caribouLiteSource",
                           gr::io_signature::make(0, 0, 0),
-                          gr::io_signature::make(1 /* min outputs */, 1 /*max outputs */, sizeof(gr_complex)))
+                          gr::io_signature::make(1 /* min outputs */, 2 /*max outputs */, sizeof(gr_complex)))
         {
             detectBoard();
 
@@ -67,12 +67,12 @@ namespace gr {
             _rx_bw = rx_bw;
             _sample_rate = sample_rate;
             _frequency = freq;
-            _mtu_size = _radio->GetNativeMtuSample();
-            _provide_sync = provide_sync;
+            _provide_meta = provide_meta;
 
             CaribouLite &cl = CaribouLite::GetInstance(false);
             _cl = &cl;
             _radio = cl.GetRadioChannel(_channel);
+            _mtu_size = _radio->GetNativeMtuSample();
             
             // setup parameters
             _radio->SetRxGain(rx_gain);
@@ -98,23 +98,12 @@ namespace gr {
                                         gr_vector_void_star &output_items)
         {
             auto out_samples = static_cast<gr_complex*>(output_items[0]);
-            auto out_sync = static_cast<uint8_t*>(output_items[1]);
+            auto out_meta = _provide_meta == true ? static_cast<uint8_t*>(output_items[1]) : (uint8_t*) NULL ;
+            int ret = _radio->ReadSamples(out_samples, static_cast<size_t>(noutput_items), out_meta);
             
-            _metadata = new cariboulite_sample_meta[noutput_items];
-            int ret = _radio->ReadSamples(out_samples, _metadata, static_cast<size_t>(noutput_items));
-            
-            if (ret <= 0) { //fail
-                delete[] _metadata;
+            if (ret <= 0) 
+            {
                 return 0;
-            } else { //success
-                if (_provide_sync)
-                {
-                    for (int i = 0; i < ret; i++)
-                    {
-                        out_sync[i] = _metadata[i].sync;
-                    }
-                }
-                delete[] _metadata;
             }
             return ret;
         }
diff --git a/software/gr-caribouLite/lib/caribouLiteSource_impl.h b/software/gr-caribouLite/lib/caribouLiteSource_impl.h
index 4c5e485..27bdb53 100644
--- a/software/gr-caribouLite/lib/caribouLiteSource_impl.h
+++ b/software/gr-caribouLite/lib/caribouLiteSource_impl.h
@@ -27,7 +27,7 @@ namespace gr
             float _sample_rate;
             float _frequency;
             size_t _mtu_size;
-            bool _provide_sync;
+            bool _provide_meta;
 
             cariboulite_sample_meta* _metadata;
             CaribouLite* _cl;
@@ -40,7 +40,7 @@ namespace gr
                                 float rx_bw,
                                 float sample_rate,
                                 float freq,
-                                bool provide_sync);
+                                bool provide_meta);
             ~caribouLiteSource_impl();
 
             int work(
diff --git a/software/gr-caribouLite/python/caribouLite/bindings/caribouLiteSource_python.cc b/software/gr-caribouLite/python/caribouLite/bindings/caribouLiteSource_python.cc
index f9b4e8c..54bb71b 100644
--- a/software/gr-caribouLite/python/caribouLite/bindings/caribouLiteSource_python.cc
+++ b/software/gr-caribouLite/python/caribouLite/bindings/caribouLiteSource_python.cc
@@ -14,7 +14,7 @@
 /* BINDTOOL_GEN_AUTOMATIC(0)                                                       */
 /* BINDTOOL_USE_PYGCCXML(0)                                                        */
 /* BINDTOOL_HEADER_FILE(caribouLiteSource.h)                                        */
-/* BINDTOOL_HEADER_FILE_HASH(9aa68c862233e30766b0524aaf530760)                     */
+/* BINDTOOL_HEADER_FILE_HASH(2af106876738c9927aadb177d064272d)                     */
 /***********************************************************************************/
 
 #include <pybind11/complex.h>
@@ -47,7 +47,7 @@ void bind_caribouLiteSource(py::module& m)
              py::arg("rx_bw") = 2500000,
              py::arg("sample_rate") = 4000000,
              py::arg("freq") = 900000000,
-             py::arg("provide_sync") = false,
+             py::arg("provide_meta") = false,
              D(caribouLiteSource, make))
 
 
diff --git a/software/libcariboulite/src/CaribouLite.hpp b/software/libcariboulite/src/CaribouLite.hpp
index f96ab7d..3cabbda 100644
--- a/software/libcariboulite/src/CaribouLite.hpp
+++ b/software/libcariboulite/src/CaribouLite.hpp
@@ -183,8 +183,8 @@ public:
     bool GetIsTransmittingCw(void);
     
     // Synchronous Reading and Writing
-    int ReadSamples(std::complex<float>* samples, cariboulite_sample_meta* meta, size_t num_to_read);
-    int ReadSamples(std::complex<short>* samples, cariboulite_sample_meta* meta, size_t num_to_read);
+    int ReadSamples(std::complex<float>* samples, size_t num_to_read, uint8_t* meta = NULL);
+    int ReadSamples(std::complex<short>* samples, size_t num_to_read, uint8_t* meta = NULL);
     int WriteSamples(std::complex<float>* samples, size_t num_to_write);
     int WriteSamples(std::complex<short>* samples, size_t num_to_write);
     
diff --git a/software/libcariboulite/src/CaribouLiteRadioCpp.cpp b/software/libcariboulite/src/CaribouLiteRadioCpp.cpp
index 1bb264e..d509cff 100644
--- a/software/libcariboulite/src/CaribouLiteRadioCpp.cpp
+++ b/software/libcariboulite/src/CaribouLiteRadioCpp.cpp
@@ -69,15 +69,15 @@ void CaribouLiteRadio::CaribouLiteRxThread(CaribouLiteRadio* radio)
 }
 
 //==================================================================
-int CaribouLiteRadio::ReadSamples(std::complex<float>* samples, cariboulite_sample_meta* meta, size_t num_to_read)
+int CaribouLiteRadio::ReadSamples(std::complex<float>* samples, size_t num_to_read, uint8_t* meta)
 {
-    if (samples == 0)
+    if (samples == NULL)
     {
         printf("samples_is_null=%d", _read_samples==NULL);
         return 0;
     }        
 
-    int ret = ReadSamples((std::complex<short>*)NULL, meta,  num_to_read);
+    int ret = ReadSamples((std::complex<short>*)NULL,  num_to_read, meta);
     //printf("ret = %d\n", ret);
     if (ret <= 0)
     {
@@ -95,7 +95,7 @@ int CaribouLiteRadio::ReadSamples(std::complex<float>* samples, cariboulite_samp
 }
 
 //==================================================================
-int CaribouLiteRadio::ReadSamples(std::complex<short>* samples, cariboulite_sample_meta* meta, size_t num_to_read)
+int CaribouLiteRadio::ReadSamples(std::complex<short>* samples, size_t num_to_read, uint8_t* meta)
 {
     if (!_rx_is_active || _read_samples == NULL || _read_metadata == NULL || num_to_read == 0)
     {
@@ -123,7 +123,7 @@ int CaribouLiteRadio::ReadSamples(std::complex<short>* samples, cariboulite_samp
 
     if (meta)
     {
-        memcpy(meta, _read_metadata, sizeof(cariboulite_sample_meta) * (size_t)ret);
+        memcpy(meta, _read_metadata, (size_t)ret);
     }
     
     return ret;