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MFJ-1756 Instruction Manual 

6 Meter Ground Plane Antenna 

 
 

Step 2: 

Insert a radial through the two rear most holes on the left and right sides of the bottom of 
the base.  Refer to Figure 3 and the holes labeled A.  Push the radial through both holes 
until one end extends 1/4 inch pass the second hole.  Repeat this step for the two front 
holes (labeled B) so that the two radials are protruding in opposite directions.  Refer to 
Figure 4 for an illustration of the radial assembly. 
 

Step 3: 

Insert a radial through the two left holes located on the front and rear of the base.  Refer 
to Figure 3 and the holes labeled C.  Push the radial through both holes until one end 
extends 1/4 inch pass the second hole.  Repeat this step for the two holes on the right 
(labeled D) so that the two radials are protruding in opposite directions (see Figure 4). 
 

 

 

Figure 3

  Antenna base with holes labeled. 

 

Note:

  The two radials that are placed in holes A and B are inserted in the base before the 

radials that are placed in holes C and D. 

 

Summary of Contents for MFJ-1756

Page 1: ...to a perfect 1 1 SWR Power capability is 1000 watts RF continuous CHOOSING A LOCATION FOR THE ANTENNA WARNING Improper installation and assembly can be hazardous Read these instructions thoroughly be...

Page 2: ...find the following items Before attempting to install this antenna check the parts bag to insure that all hardware is accounted for In the event anything is missing please contact MFJ Enterprises Inc...

Page 3: ...ds through the ceramic insulating post on top of the antenna base Thread the 10 32 nut on the 10 32 screw and tighten with a 3 8 open end wrench Do not over tighten B Locate the hole on the top of the...

Page 4: ...directions Refer to Figure 4 for an illustration of the radial assembly Step 3 Insert a radial through the two left holes located on the front and rear of the base Refer to Figure 3 and the holes lab...

Page 5: ...the radials in place stack the two stainless steel plates together and place them over the radials in the bottom of the antenna base See Figure 5 Place one lock washer on each of the 10 32 Phillips h...

Page 6: ...e U bolt See Figure 6 Figure 6 U bolt assembly B Place the U bolt around the mast not included and install the saddle on the U bolt Be sure the saddle is in the correct position to bite into the mast...

Page 7: ...he other fiberglass plate through the U bolt from the front of the antenna base Place the lock washers over the U bolt and hand thread the nuts on the bolt Tighten the nuts securely with the 7 16 open...

Page 8: ...Cutting measurements for tuning between 50 and 54 Mhz FREQUENCY RADIATOR LENGTH CUT LENGTH 50 Mhz 54 3 4 INCHES 0 INCHES 51 Mhz 52 7 8 INCHES 1 7 8 INCHES 52 Mhz 51 INCHES 3 3 4 INCHES 53 Mhz 49 1 8 I...

Page 9: ...the coax 3 to 4 from the mast for 50 Use an insulator PVC pipe if necessary Below the 50 air spaced length tape the coax to the mast and keep the coax taped against the mast for at least three feet TE...

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