--------------
SELECT version()
--------------

+------------------+
| version()        |
+------------------+
| 5.1.50-community |
+------------------+
1 row in set (0.00 sec)

--------------
DELETE FROM PUBACC_FR






  WHERE ( frequency_assigned + 0 >= 825 AND frequency_assigned + 0 <= 849 )
        OR
        ( frequency_assigned + 0 >= 869 AND frequency_assigned + 0 <= 894 )
--------------

Query OK, 17 rows affected (16.00 sec)

Bye