2 files changed, 7 insertions, 1 deletions
diff --git a/gr-uhd/lib/usrp_sink_impl.cc b/gr-uhd/lib/usrp_sink_impl.cc
index 513dfafad7..98d54866fe 100644
--- a/gr-uhd/lib/usrp_sink_impl.cc
+++ b/gr-uhd/lib/usrp_sink_impl.cc
@@ -71,7 +71,7 @@ namespace gr {
         _length_tag_key(length_tag_name.empty() ? pmt::PMT_NIL : pmt::string_to_symbol(length_tag_name)),
         _nitems_to_send(0)
     {
-      // nop
+      _sample_rate = get_samp_rate();
     }
 
     usrp_sink_impl::~usrp_sink_impl()
diff --git a/gr-uhd/lib/usrp_source_impl.cc b/gr-uhd/lib/usrp_source_impl.cc
index 4265535a19..d2d12c2eb1 100644
--- a/gr-uhd/lib/usrp_source_impl.cc
+++ b/gr-uhd/lib/usrp_source_impl.cc
@@ -71,6 +71,12 @@ namespace gr {
       std::stringstream str;
       str << name() << unique_id();
       _id = pmt::string_to_symbol(str.str());
+
+      _samp_rate = this->get_samp_rate();
+      _center_freq = this->get_center_freq(0);
+#ifdef GR_UHD_USE_STREAM_API
+      _samps_per_packet = 1;
+#endif
     }
 
     usrp_source_impl::~usrp_source_impl()