Amplifier Features

*         Professional-Grade Quality

*         Frequency range of 250 MHz to 2150 MHz

*         Input Power Range of -20dBm to -75dBm

*         Fixed gain of 20dB on each of 4 channels

*         External 12VDC Power Supply included

*         Gain/Slope compensation of 6dB

     (15.5dB at 250 MHz, 21.5dB at 2150 MHz)

*         Internal DC blocking capacitors on all ports

*         Operating temperature of -40°C to +85°C

*         Mechanical dimensions are 6.4”W x 4.4”L x 1.5”H

HD4PNBFG20B Fixed Gain Amplifier

The High Definition 20dB Fixed Gain Amplifier (HD4PNBFG20B) is a 4-Port general purpose, high gain amplifier that adds signal strength to any residential, commercial, or SMATV type installation. When long cable runs as well as multiple taps and splitters significantly reduce the signal strength in the trunk lines of a system, use of an HD4PNBFG20B amplifier can boost signal strength to the desired input levels required by multi-switches and receivers.

Input power levels to the amplifier can be as low as -75dBm. With the amplifier capable of detecting these very weak signals, longer cable runs may be used before amplification is required. This in turn can result in fewer amplifiers being needed in the overall system design. Built-in DC blocking capacitors also eliminate the need for any external capacitors. Reducing system complexity should result in reduced system cost.

HDTV Labs products are all designed for easy installation. Mounting brackets make it easy to secure the devices to walls or flat surfaces. Wide spacing of the "F" connectors makes attaching or removing cabling to the devices a simple procedure. Although meant for indoor use, the device is built with a Professional-Grade rugged aluminum housing and corrosion resistant connectors to extend the life of the product. A 12VDC external power supply is included with the amplifier.

One device feature to note is the exceptionally wide input level range of -20dBm to -75dBm. With the capability to still recover the desired signal when large variations in cable length and device losses exist, the installation becomes easier to design and more flexible to implement. The ability to detect very weak input signals is an obvious advantage to the commercial installation as it allows more cabling in the system before signal loss becomes an issue. On the other hand, installers actually risk over-driving the amplifier if a typically strong signal is applied at the input. If poor C/N ratio is seen at the output of the amplifier, it is being over-driven and the installer must reduce the input power for it to work correctly. Proper output signals should be checked with a meter to prevent over-driving any of the system's four channels.

The HD4PNBFG20B amplifier has a gain/slope network built into each of its four channels. As system channel frequencies increase, so do the losses associated with that channel. The gain/slope circuitry essentially keeps the output signal at a constant level across all frequencies by applying more gain at the higher frequency channels and less gain at the lower frequency channels.

Installation cost and complexity are reduced in systems using the HD4PNBFG20B Fixed Gain Amplifier, saving both time and money. All HDTV Labs products are designed and manufactured in the USA.