Advanced dipole antenna design for extended operating range, which improves operation by providing a ground element in addition to the usual signal element. * Volume control, AF Peak, RF and Power indicator lights, 1/4" output jack and space-saving power supply. * Easily accessible On/Standby/Off switch on transmitters. * Available in three VHF travelling frequencies (169.505, 170.245, and 171.905 MHz). All three work together with no interference from TV channels, and no frequency coordination is required.