MFJ MFJ-2912 Bedienungsanleitung

INSTRUCTION MANUAL

CAUTION: Read All Instructions Before Operating Equipment

MFJ ENTERPRISES, INC.

300 Industrial Park Road

Starkville, MS 39759 USA

Tel: 662-323-5869 Fax: 662-323-6551

Model MFJ-2912

VERSION 1A

MFJ-2912 Instruction Manual Wall-Mount Balun

MFJ-2912 Wall-Mount Balun

Introduction

The MFJ-2912 is a wall-mounted 1:1 balun that keeps RF current

traveling on the outside surface of coax cables away from station

equipment and internal house wiring. It also prevents electrical

noise generated in the building from migrating up to the antenna

feedpoint and raising the receiver noise floor. The wall-mount

packaging provides a convenient disconnect point for lightning

protection. Disconnecting the antenna from the building is the

most effective method for preventing equipment damage from on-

site lightning strikes. Bottom-mounted SO-238 connectors keep

rain away from coax connections and all-stainless hardware

ensure maximum durability plus long product life.

The MFJ-2912 mounts on the exterior wall of your building to keep

RF out of the shack and away from internal house wiring. It also

prevents electrical noise generated in the building from migrating

up to the antenna feedpoint and raising your receiver’s noise floor.

The toroid-style transmission-line choke is rated for maximum

legal power on SSB and CW, and it delivers an impressive 30+ dB

of through-transmission (S21) common-mode isolation on 80-10

meters. The exterior wall-mount package also provides a

convenient disconnect point for lightning protection. The MFJ-

2912 uses premium-grade SO-238 connectors that are mounted

on the bottom surface of the enclosure to keep rain away from

coax connections. All-stainless hardware and rugged components

ensure maximum durability plus long product life.

MFJ-2912 Instruction Manual Wall-Mount Balun

General Installation

For typical residential applications, use the two wood screws

provided for mounting the balun. Brick, masonry, or stucco

surfaces will require purchasing and installing wall anchors made

for the particular construction material used. Stainless-steel sheet-

metal screws are recommended for mounting on metal buildings

or utility boxes. RF Input and output connections are

interchangeable. However, do not tie the two coax connectors

together with a common ground wire, as this will bypass the balun

and render it ineffective.

Important Note: Always mount with the connectors facing

downward to ensure maximum protection from water incursion.

Specifications:

Impedance: 50 Ohms

Frequency Range: 1.5 – 50 MHz

Power Rating 1.5 kW PEP, SSB and CW (de-rate

50% for RTTY)

MFJ-2912 Instruction Manual Wall-Mount Balun

Schematic Diagram:

Technical Assistance

If you have any problem with this unit first check the appropriate

section of this manual. If the manual does not reference your

problem or your problem is not solved by reading the manual you

may call MFJ Technical Service at 662-323-0549 or the MFJ

Factory at 662-323-5869. You will be best helped if you have your

unit, manual and all information on your station handy so you can

answer any questions the technicians may ask.

You can also send questions by mail to MFJ Enterprises, Inc., 300

Industrial Park Road, Starkville, MS 39759; by Facsimile to 662-

323-6551; or by email to [email protected]. Send a

complete description of your problem, an explanation of exactly

how you are using your unit, and a complete description of your

station.

Inhaltsverzeichnis

Andere MFJ Antenne Handbücher

MFJ

MFJ MFJ-1438 Bedienungsanleitung

MFJ

MFJ MFJ-1799 Bedienungsanleitung

MFJ

MFJ MFJ-918WM Bedienungsanleitung

MFJ

MFJ 2286 Bedienungsanleitung

MFJ

MFJ MFJ-1836 Bedienungsanleitung

MFJ

MFJ MFJ-1795W Bedienungsanleitung

MFJ

MFJ MFJ-1756 Bedienungsanleitung

MFJ

MFJ 1436 Bedienungsanleitung

MFJ

MFJ MFJ-1024 Bedienungsanleitung

MFJ

MFJ MFJ-57B Bedienungsanleitung

MFJ

MFJ MFJ-1020C Bedienungsanleitung

MFJ

MFJ MFJ-1903 Bedienungsanleitung

MFJ

MFJ 1779C Bedienungsanleitung

MFJ

MFJ 1731 Bedienungsanleitung

MFJ

MFJ MFJ-17758 Bedienungsanleitung

MFJ

MFJ Super Hi-Q Loop Bedienungsanleitung

MFJ

MFJ MFJ-1982LP Bedienungsanleitung

MFJ

MFJ MFJ-1778M G5RV JR. Bedienungsanleitung

MFJ

MFJ MFJ-1796 Bedienungsanleitung

MFJ

MFJ MFJ-1886 Bedienungsanleitung

MFJ

MFJ MFJ-1754 Bedienungsanleitung

MFJ

MFJ Legal Limit IntelliTuner MFJ-998RT Bedienungsanleitung

MFJ

MFJ MFJ-1762 Bedienungsanleitung

MFJ

MFJ MFJ-1796 Bedienungsanleitung

Beliebte Antenne Handbücher anderer Marken

Alfa Network

Alfa Network APA-L01 Bedienungsanleitung

Naval

Naval PR-422CA Bedienungsanleitung

Feig Electronic

Feig Electronic ID ISC.ANTH200/200 Series Bedienungsanleitung

TERK Technologies

TERK Technologies TV44 Bedienungsanleitung

Directive Systems & Engineering

Directive Systems & Engineering DSE2324LYRMK Bedienungsanleitung

HP J8999A Bedienungsanleitung

MobilSat

MobilSat MSP-S Bedienungsanleitung

Steren

Steren ANT-UHF 13 Bedienungsanleitung

Novatel

Novatel 600-G Bedienungsanleitung

Radio Shack

Radio Shack Amplified VHF/UHF/FM Indoor Antenna Bedienungsanleitung

TRENDnet

TRENDnet TEW-AO12O Bedienungsanleitung

Radio Shack

Radio Shack 15-1837 Bedienungsanleitung

CommScope

CommScope CMAX-OMFX-43M-I53 Bedienungsanleitung

Ramsey Electronics

Ramsey Electronics DAP25 Bedienungsanleitung

COBHAM

COBHAM SAILOR 800 VSAT Gebrauchs- und Pflegehandbuch

Trango Systems

Trango Systems AD900-9 Bedienungsanleitung

Steren

Steren ANT-100 Bedienungsanleitung

IWCS

IWCS iriBelt II Einrichtungshandbuch