Abstract: A dc-to-coax adapter is provided for establishing an electrical coupling between a power source and a coaxial cable device. The adapter may include a power connector portion and an RF connector portion. In an exemplary embodiment the power connector portion comprises a dc jack adapted to establish an electrical coupling with a standard dc barrel plug connector and the RF connector portion comprises a female F connector adapted for establishing electrical coupling with a male F connector. The contacts of the power connector portion may be integrated with the contacts of the RF connector portion the adapter housing may provide a continuous ground connection.