diff --git a/lib/rtl/rtl_source_c.cc b/lib/rtl/rtl_source_c.cc
index 9ca6d64..cc40fe9 100644
--- a/lib/rtl/rtl_source_c.cc
+++ b/lib/rtl/rtl_source_c.cc
@@ -325,17 +325,18 @@ osmosdr::meta_range_t rtl_source_c::get_sample_rates()
 {
   osmosdr::meta_range_t range;
 
-  range += osmosdr::range_t( 250000 ); // known to work
+//  range += osmosdr::range_t( 250000 ); // may work
   range += osmosdr::range_t( 1000000 ); // known to work
   range += osmosdr::range_t( 1024000 ); // known to work
   range += osmosdr::range_t( 1800000 ); // known to work
   range += osmosdr::range_t( 1920000 ); // known to work
+  range += osmosdr::range_t( 2000000 ); // known to work
   range += osmosdr::range_t( 2048000 ); // known to work
   range += osmosdr::range_t( 2400000 ); // known to work
-  range += osmosdr::range_t( 2600000 ); // may work
-  range += osmosdr::range_t( 2800000 ); // may work
-  range += osmosdr::range_t( 3000000 ); // may work
-  range += osmosdr::range_t( 3200000 ); // max rate
+//  range += osmosdr::range_t( 2600000 ); // may work
+//  range += osmosdr::range_t( 2800000 ); // may work
+//  range += osmosdr::range_t( 3000000 ); // may work
+//  range += osmosdr::range_t( 3200000 ); // max rate
 
   return range;
 }
diff --git a/lib/rtl_tcp/rtl_tcp_source_c.cc b/lib/rtl_tcp/rtl_tcp_source_c.cc
index 9eb750f..a21241f 100644
--- a/lib/rtl_tcp/rtl_tcp_source_c.cc
+++ b/lib/rtl_tcp/rtl_tcp_source_c.cc
@@ -120,17 +120,18 @@ osmosdr::meta_range_t rtl_tcp_source_c::get_sample_rates( void )
 {
   osmosdr::meta_range_t range;
 
-  range += osmosdr::range_t( 250000 ); // known to work
+//  range += osmosdr::range_t( 250000 ); // may work
   range += osmosdr::range_t( 1000000 ); // known to work
   range += osmosdr::range_t( 1024000 ); // known to work
   range += osmosdr::range_t( 1800000 ); // known to work
   range += osmosdr::range_t( 1920000 ); // known to work
+  range += osmosdr::range_t( 2000000 ); // known to work
   range += osmosdr::range_t( 2048000 ); // known to work
   range += osmosdr::range_t( 2400000 ); // known to work
-  range += osmosdr::range_t( 2600000 ); // may work
-  range += osmosdr::range_t( 2800000 ); // may work
-  range += osmosdr::range_t( 3000000 ); // may work
-  range += osmosdr::range_t( 3200000 ); // max rate
+//  range += osmosdr::range_t( 2600000 ); // may work
+//  range += osmosdr::range_t( 2800000 ); // may work
+//  range += osmosdr::range_t( 3000000 ); // may work
+//  range += osmosdr::range_t( 3200000 ); // max rate
 
   return range;
 }