CREATE TABLE table_name_22 (frequency_mhz VARCHAR(255), erp_w VARCHAR(255), call_sign VARCHAR(255))
Name the total number of frequency Mhz for when it has ERP W of 1 and call sign of w215bj
    
SQL: SELECT COUNT(frequency_mhz) FROM table_name_22 WHERE erp_w = 1 AND call_sign = "w215bj"