Although inferior in electrical terms (at least 30% of the RF power is converted to heat in the resistor ) to antennas specifically designed for given frequency bands, or optimized for directionality, its all-around performance, relatively modest size, low cost, and the fact that it does not require any complex electronic matching to operate with a standard shortwave transmitter, have made it popular in professional shortwave communications where ERP or gain are not a concern. One example would be clear channel low power HF communications.