Drake DAR8642 Rack Distribution Amplifier

Drake DAR8642 Rack Distribution Amplifier

Professional Rack Mounted Power Doubling Distribution Amplifiers DAR Series Amplifier

The R.L. Drake model DAR8642, DAR8633, DAR8618, DAR7542, and DAR7533 broadband distribution amplifiers are designed for indoor headend use in both residential and commercial buildings where RF signal distribution in the frequency range of 54 to 750 or 860 MHz is required.

Each model incorporates a push-pull hybrid input preamp (except the DAR8618) and a power doubled hybrid output amplifier to provide a very low distortion signal for launch amplifier applications in the output of an SMATV or CATV headend. The Gain and Slope controls both have a range of 10 dB minimum and operate between the preamp hybrid and the output hybrid to maintain a low noise figure over a wide range of gain and slope settings. The DAR8618 has a power doubled output hybrid with no input preamplifier and no adjustable gain and slope controls.

All models have a provision for optional fixed input attenuators and equalizers.

Double-sided, plated through hole, glass epoxy printed circuit boards, and SMT construction are used for low losses and maximum reliability.

·                       All DAR series models include a built-in diplexer filter. This allows the return path energy that is present at the output port of the DAR to be separated from the DAR output and passed to the return path output port.

·                       Input and output test connectors are provided for convenient monitoring of the signal path. The amplifier circuitry is designed for maximum stability, low distortion, low noise figure, and is protected in a rugged aluminum housing.

·                       The units operate from a nominal 120 VAC, 60 Hz AC Input.

Professional Power Doubling Indoor Distribution Amplifiers

The R.L. Drake model DA7533, DA7543, DA8632, DA8642, DA100032, and DA100042 broadband distribution amplifiers are designed for indoor use in both residential and commercial buildings where RF signal distribution in the frequency range of 49 to 750 MHz, 49 to 860 MHz, or 49 to 1000MHz is required. Each model incorporates a push-pull hybrid input preamp and a power doubled hybrid output amplifier to provide a very low distortion signal for a cable television "drop", the output of an SMATV headend, or a small CATV headend. The Gain and Slope controls both have a range of 10 dB minimum and operate between the preamp hybrid and the output hybrid to maintain a low noise figure over a wide range of gain and slope settings.

Double-sided, plated through hole, glass epoxy printed circuit boards, and SMT construction are used for low losses and maximum reliability.

The unit features three user selectable return path choices (internal jumper selectable):

·                       No return path.

·                       Passive return path with variable 10 dB attenuator.

·                       Built in active return path.

Input and output test connectors are provided for convenient monitoring of the signal path. The amplifier circuitry is designed for maximum stability, low distortion, low noise figure, and is protected in a rugged aluminum housing.

The unit operates from a nominal 26 VAC provided by the supplied 120 VAC, 60 Hz input AC Adapter.