MFJ MFJ-1164B User Manual

MFJ-1164B Instruction Manual AC Line RFI Filter

MFJ-1164B AC Line RFI Filter

Introduction

Thank you for purchasing the MFJ-1164B AC Line RFI Filter. This is a
versatile AC Filter that can be used with all types of sensitive equipment
that needs AC line protection. Power lines are subject to a variety of
radio frequency interference, transients, surges, and noise that can
cause damage to sensitive electronic equipment such as computers,
televisions, audio equipment, etc. The MFJ-1164B empowers you to
protect your valuable equipment and data from unpredictable power
disturbances.

Operation

The AC Line RFI Filter eliminates noise and RF interference by providing
inductive isolation and capacitive decoupling of differential and common
mode RFI signals. This will assure clean AC power by eliminating lower
voltage noise missed by surge protection technology. These
components block and shunt signals to earth ground and reduce data
errors, computer lock-up, and audio video interference. It also provides
super fast, nano-second overvoltage protection to protect against surges
and erroneous transients.

Features

The AC Line RFI Filter is designed to operate at 120 Volts AC and can
handle up to 25 Amps total at a maximum power of 3000 Watts. Four
US Standard AC outlets are provided so you can protect multiple devices
simultaneously. The MFJ-1164B uses a heavy-duty 6ft. AC line cord that
can withstand the stress and strain of long-term usage. Mounting tabs
support permanent installation on a wide variety of surfaces.

If you want to protect your sensitive equipment by improving the power
quality inside your home, reducing power line harmonics, and enhancing
your overall electric energy utilization, this is an inexpensive solution for
you. Constructed from a sturdy aluminum chassis, the unit measures
only 2”H x 3 ½”W by 11”L with plenty of room to plug in the largest of AC
adapters. The AC Line RFI Filter includes an additional ground and is
fuse protected.

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MFJ-1164B Instruction Manual AC Line RFI Filter

Figure 1: MFJ-1164B AC Line RFI Filter

WARNING: DO NOT connect to an ungrounded outlet without

connecting to the chassis ground. Install the AC Filter
away from excessive moisture or where other conductive
contaminants are present. Never install electrical wiring
during an electrical storm.

Getting Started

Installation of the MFJ-1164B is fast and easy:

1. Choose a convenient location in close proximity of sensitive
equipment that you want to protect. Make sure the location
that you have chosen is cool, dry, and well ventilated.

2. Connect the AC Line RFI Filter. Plug the AC line cord into a
US Standard 120VAC grounded three-prong utility outlet.

3. Connect the equipment to the AC Line RFI Filter. Plug the
equipment that you want to protect into any of the four outlets
on the filter. (two- or three-prong AC cords will be protected.)

4. Connect the earth ground. A good earth ground should be
installed and connected to the case of the MFJ-1164B. This
will provide the best possible performance of the filter as well
as safety for the operator.

5. Mount the filter, if desired, using the mount tabs on each end
of the filter.

6. A 30 Amp fuse is used to protect your equipment from a high
current surge. If the fuse should blow in the case of an
electrical storm, transients or surges, replace the fuse with a 30
Amp glass tube type fast blow fuse.

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