The D104-M6 series microphones are quality performance field effect amplified “power” microphones for amateur, citizen band, mobile, aircraft, marine applications. The housing of the D104-M6B is molded black ABS with a chrome plated grille screen (pictured at right). The housing of the D104-M6C is molded black ABS, the front half is chrome plated and the grille screen is chrome plated. An output impedance compatible with the inputs of almost all commercial transceivers and externally adjustable high gain amplifier ensures desired modulation level. The D104-M6 has an easily accessible control for volume so that the correct modulation level can be set for each operators voice. The D104-M6 preamplifier is powered by a readily available, easily replaced, 9 volt battery. The D104-M6 has a six wire coil cord which allows for relay, electronic or virtually any type hookup with almost any transceiver. The audio line is open during receive.