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MFJ-1754 Dual Band Antenna 

 

Instructions

 

INTRODUCTION:

 

 
The MFJ-1754 is designed for use on the 2 meter and the 70 centimeter bands.  On the 2 meter band the MFJ-1754 
behaves as a vertical 1/4 wave antenna, however on 70 centimeter band the MFJ-1754 is a gain antenna. It is 
constructed of a 1/2 wave over a 1/4 wave antennas, which gives it a higher gain for extra long range. The MFJ-1754 
uses a sloped ground plane to ensure a low SWR across both bands and, to minimize the feed line radiation which 
can result in pattern distortion and skewing. 
 

CHOOSING A LOCATION FOR THE ANTENNA 
 

The MFJ-1754 can be mounted on any 1" to 1 1/2" mast 

(conductive or non conductive.)

 

 

The best performance on receiving and transmitting will be obtained by mounting the antenna as high as possible in a 
clear location above or away from buildings, feed lines, utility wires, and other antennas. While your ingenuity and 
particular circumstances will determine the final mounting method.

 

 
MFJ-1754 PARTS LIST 
 

The MFJ-1754 is shipped partially assembled. The following parts should be in the package: 
 

  ITEM  

QUANTITY  

DESCRIPTION 

 

 

  A 

 

    3  

 

 

  Radials 

 

 

  B 

 

    1 

 

 

  Chassis 

 

 

  C 

 

    3 

 

 

   6-32 X 1/2 Screws, & nuts 

 

 

  D 

 

    1 

 

 

   U-Clamp Assembly  

 

TOOLS REQUIRED 
 

[ ] - 7/16" Open End Wrench 
[ ] - #1 Screwdriver  
[ ] - 5/64" Allen Wrench (

Provided

 

SAFETY PRECAUTIONS 
 
WARNING ! 
 

-

 Always mount this antenna so that it is out of reach of adults as well as children. The radiator and the 

 

ground plane can cause injury and or severe RF burns.  

 

- Always wear eye protection when working with antenna

 

  

-

 You can be killed if the antenna, feed line, or the equipment used to install the antenna accidentally 

 

contact any utility lines. Never install an antenna near power lines.

 

ASSEMBLY AND INSTALLATION PROCEDURE 

Содержание MFJ-1754

Страница 1: ... antenna as high as possible in a clear location above or away from buildings feed lines utility wires and other antennas While your ingenuity and particular circumstances will determine the final mounting method MFJ 1754 PARTS LIST The MFJ 1754 is shipped partially assembled The following parts should be in the package ITEM QUANTITY DESCRIPTION A 3 Radials B 1 Chassis C 3 6 32 X 1 2 Screws nuts D...

Страница 2: ...er then fine tuned before mounting it on a permanent location TUNING THE ANTENNA The antenna is pre tuned for low SWR on both the 2 meter and the 440 MHz bands However the SWR can change from location to an other In this case some minor adjustment is perhaps necessary Adjustment on this antenna in done by losing the set screw see figure 1 and increase or decrease the length of the radiator element...

Страница 3: ...ions 3 You can also send questions to MFJ Enterprises Inc P O Box 494 Mississippi State MS 39759 Send a complete description of your problem an explanation of exactly how you are using your unit and a complete description of your station ...

Страница 4: ...MFJ 1754 Dual Band Antenna Instructions 4 FULL 12 MONTH WARRANTY ...

Страница 5: ...er postage and handling 4 This warranty is NOT void for owners who attempt to repair defective units Technical consultation is available by calling 601 323 5869 5 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 6 Wired and tested PC board products are covered by this warranty provided only the wired and tested PC board product is returned Wired and tested PC boa...

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