diff --git a/lib/hackrf/hackrf_sink_c.cc b/lib/hackrf/hackrf_sink_c.cc
index ada9f08..120b271 100644
--- a/lib/hackrf/hackrf_sink_c.cc
+++ b/lib/hackrf/hackrf_sink_c.cc
@@ -555,7 +555,7 @@ osmosdr::freq_range_t hackrf_sink_c::get_freq_range( size_t chan )
 {
   osmosdr::freq_range_t range;
 
-  range += osmosdr::range_t( 10e6, 6e9 );
+  range += osmosdr::range_t( _sample_rate / 2, 7250e6 - _sample_rate / 2 );
 
   return range;
 }
diff --git a/lib/hackrf/hackrf_source_c.cc b/lib/hackrf/hackrf_source_c.cc
index 94113e2..f647b80 100644
--- a/lib/hackrf/hackrf_source_c.cc
+++ b/lib/hackrf/hackrf_source_c.cc
@@ -450,7 +450,7 @@ osmosdr::freq_range_t hackrf_source_c::get_freq_range( size_t chan )
 {
   osmosdr::freq_range_t range;
 
-  range += osmosdr::range_t( 10e6, 6e9 );
+  range += osmosdr::range_t( _sample_rate / 2, 7250e6 - _sample_rate / 2 );
 
   return range;
 }