MFJ MFJ-1762 Instruction Manual Download Page 2

MFJ-1762 Parts List:  

To begin, confirm that all necessary parts have been supplied with

your antenna package:

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1 - 6' x 1-1/8" OD boom

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2 - 54" x 1/4" OD element section (director)

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2 - 54-1/2" x 1/4" OD element section (driven element)

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2 - 59-1/4" x 1/4" OD element section (reflector)

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1 - 5/16" x 1/4" OD spacer

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1 - hairpin inductor

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2 - "L" bracket

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1 - #8 x 1/2" sheet-metal screw

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6 - 1/2" x 10-32 screw

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2 - 1/2" x 6-32 screw

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2 - 6-32 nut

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2 - 6-32 flat washer

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2 - 6-32 lock washer

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4 - Insulated polyethylene element-mounting grommets

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2 - #6 solder lug

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1 - 1 - U-bolt mounting hardware kit (U-bolt, mast clamp, nuts)

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  Tube of Locktite 

If any parts are damaged or omitted, please contact MFJ at (601) 323-0549 to arrange for
replacement.

Tools: 

 You'll need a selection of common household tools to construct your antenna:

Phillips-head screw driver (#2)
Straight-blade screw driver
Pliers
Utility knife or Ex-acto

 knife with #11 blade

Soldering Set-up

Suggested Antenna Materials:

RG8-M Coax (also RG59 if stacking antennas)
Sealant (Seal-All 

) or equivalent

Plastic electrical tape

Suggested Test Equipment:

MFJ-259 RF Analyzer or VSWR bridge

Summary of Contents for MFJ-1762

Page 1: ...pical Specifications Boom length 6 Turning Radius 5 8 Longest Element 117 1 2 Weight 2 5 Lbs Feed Impedance 50 Resonant Frequency 50 3 MHz 1 5 1 VSWR Bandwidth 1 7 MHz Forward Gain 6 0 dBd 8 2 dBi Fro...

Page 2: ...4 Insulated polyethylene element mounting grommets 2 6 solder lug 1 1 U bolt mounting hardware kit U bolt mast clamp nuts Tube of Locktite If any parts are damaged or omitted please contact MFJ at 601...

Page 3: ...wo 2 54 director element sections and identify the tapped end of each Insert the tapped ends into the 1 4 holes drilled at the director end of the boom Secure each in place with 10 32 screws If you do...

Page 4: ...pped end of each through the driven element insulating grommets Using 10 32 screws install a L bracket on each driven element section as shown in the construction detail Apply Locktite to the screws a...

Page 5: ...3 thin coats of Seal All to the exposed braid to retard water migration into the cable If Seal All is not available use a rubberized contact cement or a silicon sealer Allow sealant to dry thoroughly...

Page 6: ...t This will provide a strong RF insulated support Fiberglass poles are available at most large home care centers A wooden closet pole will also work if weather proofed with a uV resistant finish To pr...

Page 7: ...ice the RG59 back together using a coaxial type T adapter this becomes the antenna array s 50 Ohm feedpoint Connect pigtail ends to the antennas Note that this off center fed harness shifts signals 18...

Page 8: ...haffing crushed areas breaks in jacket water infusion etc Inspect the antenna for loose or broken elements broken coax pigtail or debris Check in line devices such as amplifiers coax switches VSWR met...

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