$FREQUENCY_QUERY->execute( );
while ( my ($FREQUENCY_ID, $FREQUENCY) = $FREQUENCY_QUERY->fetchrow_array() )
{            
    $CHANNEL_QUERY->execute( ); 
    ....
}  
#######
#note    # $FREQUENCY_ID = "$FREQUENCY_QUERY[0]"; #not needed, delete
         # $FREQUENCY = "$FREQUENCY_QUERY[1]";    #not needed, delete
#