diff --git a/bridge_master.py b/bridge_master.py
index 21699db..70306ff 100644
--- a/bridge_master.py
+++ b/bridge_master.py
@@ -1829,7 +1829,12 @@ class routerHBP(HBSYSTEM):
                     continue
                 print(system)
                 if CONFIG['SYSTEMS'][system]['MODE'] == 'OPENBRIDGE':
-                    systems[system].send_system(_data)
+                    # Clear the TS bit -- all OpenBridge streams are effectively on TS1
+                    _tmp_bits = _bits & ~(1 << 7)
+                    # Assemble transmit HBP packet header
+                    _tmp_data = b''.join([_data[:15], _tmp_bits.to_bytes(1, 'big'), _data[16:20]])
+                    _tmp_data = b''.join([_tmp_data, dmrpkt, _data[53:55]])
+                    systems[system].send_system(_tmp_data)
                     logger.info('(%s) UNIT Data Bridged to OBP System: %s DST_ID: %s', self._system, system,_int_dst_id)
                     if CONFIG['REPORTS']['REPORT']:
                         systems[system]._report.send_bridgeEvent('UNIT DATA,START,TX,{},{},{},{},{},{}'.format(system, int_id(_stream_id), int_id(_peer_id), int_id(_rf_src), 1, _int_dst_id).encode(encoding='utf-8', errors='ignore'))