Abstract: AC power at 15 amps and a radio frequency signal are transmitted in a coaxial cable to a telecommunications amplifier. The AC signal is separated from the RF signal by a radio frequency module. The AC signal is converted to a regulated DC voltage for supplying power to condition and amplify the radio frequency signal transmitted from the amplifier. A power supply module in the amplifier is connected through a bank of fuses and a power switch to the RF module. A cover plate overlies the fuses and the electrical connection between the power supply module and the RF module. The power switch includes a toggle lever movable between power on and power off positions to transmit power between the modules. To prevent exposure of operating personnel and the electrical equipment to the hazards of high voltage and electric shock, the toggle switch obstructs movement of the cover plate exposing the fuses in a power on position.

Abstract: An apparatus for and a method of RF amplification of signals up to 1 GHz. The apparatus, known as a repeater station, is for use in Community Antenna TeleVision transmission (CATV). The RF amplification (gain) stage includes two multitransistor distributed amplifier stages connected in a push-pull configuration. Each distributed amplifier includes four transistors connected to produce two-each cascode circuits. The distributed amplifier stages are operated in push-pull configuration by means of a 180.degree. phase shifting power splitter. The push-pull configuration of the distributed amplifier operates in combination with the 180.degree. phase shifting power splitter to cancel the 2IM distortion created within the distributed amplifiers, and to double the output capability of a single distributed amplifier.

Abstract: This invention relates to a coaxial type connector for coupling a printed circuit board to an outside circuit and includes means to clamp said connector to said circuit board to form a sturdy circuit element that can be tested for conductivity without requiring spot soldering in the clamped portions. The connector may be readily disconnected from the printed circuit board should the test fail and another printed circuit board readily substituted. The connector, with the printed circuit board clamped thereto, is maintained in clamped relation for further assembly with other assembly elements should the test be passed.

Abstract: This invention relates to a connector for coupling a printed circuit board to an outside circuit and includes means to clamp said connector to said circuit board to form a sturdy circuit element that can be tested for conductivity without requiring spot soldering in the clamped portions. The connector may be readily disconnected from the printed circuit board should the test fail and another printed circuit board readily substituted. The connector, with the printed circuit board clamped thereto, is maintained in clamped relation for further assembly with other assembly elements should the test be passed.

Abstract: An improved feed forward circuit and a method of aligning and balancing the improved feed forward circuit. The feed forward circuit includes a first circuit loop to isolate signal noise and distortion and a second circuit loop to reduce signal noise and distortion. The first circuit loop and the second circuit loop have directional coupler means, amplification means, and delay means. The first circuit loop and the second circuit loop are interconnected through a pair of common directional coupler means having common balance circuitry connected therebetween. The first circuit loop has a signal input terminal and an input test terminal and the second circuit loop has a signal output terminal and an output test terminal. The improvement in the feed forward circuit includes a pair of additional directional coupler means.

Abstract: A broadband radio frequency signal are in the range between about 5 and 400 MHz and a single phase 60 Hz AC power signal are transmitted through a cable transmission line of a cable television system. Amplifiers are powered by the 60 Hz AC signal. The amplifiers are operable as repeater stations that transmit the radio frequency (RF) signal. An RF choke connected to the transmission line separates the 60 Hz AC signal from the broadband 5 to 400 MHz signal. The RF choke includes a conductor of a preselected gauge formed in a coil having a preselected number of turns wound around a ferrite coil form. A ferrite bead is in series with the coil on a selected turn of the coil. The ferrite bead displays an RF series resistance or impedance to the inductance of the coil and reduces the series resonance of the coil. A resistor is connected in parallel to a selected turn of the coil at the opposite end of the coil and functions as a shunt.