MFJ MFJ-1799 Instruction Manual Download Page 1 | Manualshive

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CAUTION: Read All Instructions

Before Operating Equipment

300 Industrial Park Road

Starkville, MS 39759 USA

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

COPYRIGHT 2013 MFJ Enterprises Inc.

C

MFJ-1799

2,6,10,12,15,17,20,30,40,80 METER

INSTRUCTION MANUAL

Vertical Antenna

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Summary of Contents for MFJ-1799

Page 1: ...s Before Operating Equipment 300 Industrial Park Road Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 COPYRIGHT 2013 MFJ Enterprises Inc C MFJ 1799 2 6 10 12 15 17 20 30 40 80 METER INSTRUCT...

Page 2: ...he assembly area Only the people involved in the construction should be near Assembly can be done by one person but when the antenna is to be mounted or moved plan to have a friend to help It is not w...

Page 3: ...Aluminum tubes 2 One 1 1 2 x 12 inch double walled Aluminum tube 3 Two 1 1 4 x 12 Fiberglass Rods 4 Two 1 4 20 x 1 3 4 Bolts 5 Four 1 4 split washers 6 Four 1 4 20 Nuts 7 One Shunt coil 36 Two 1 4 20...

Page 4: ...meters short 15 Two threaded rods for 6 meters long 16 Eight 10 32 nuts 17 Eight 10 split washers 12 12 Use the 6 32 x inch screws and 6 32 nuts to attach a half clamp to each bracket as shown 13 10...

Page 5: ...a side 20 Base bracket 21 Larger saddle Mast side 22 Larger U bolt Mast side 23 5 16 Split washer 24 5 16 Hex Nut Slide the Mast bracket onto the bottom of the antenna The mast should level with the t...

Page 6: ...a split washer and a 10 24 nut to secure the Balun to the mast bracket Route the upper coax to the center feed point of the antenna Connect the center conductor eyelet to the top section of the antenn...

Page 7: ...caps will have to be removed to trim the rods Install the rod in both 10 40 meter loading sections Three lengths of rods are included The short rods are for the 10 30 meter sections The medium size r...

Page 8: ...ng coils are the same so it doesn t matter which one is on top or bottom 1 8 AL spoke 48 8 places Un tighten the pre installed screws and insert the rest of the screws and nuts loosely Insert the spok...

Page 9: ...10M 13T 17M 1 1 8 x 8 Top of main radiator Slide the top 10 40 loading coil 3 inches down into the top of the main radiator Use a 16 hose clamp to hold it in place Use the joining section of tubing t...

Page 10: ...tuned while lying on its side Installation on a temporary mast will make tuning easier as you will be raising and lowering the antenna for adjustment It is best to get the antenna close to the frequen...

Page 11: ...ground or proximity to metal can cause the tuning to shift for each coil This can be corrected while tunning an does not indicate a problem with the antenna or coils What you are seeing are two dips...

Page 12: ...of the radiator Check the dip point of each band Lengthen the radiator to lower the frequency Shorten the radiator to raise it Each side of each band should be the same length 6mtr stub 2mtr stub Adju...

Page 13: ...rs instead of 80 if you so desire Higher frequency Higher frequency Capacitance hat rods and rest of antenna not shown WARNING You can be killed if the antennas feedline or the equipment used to insta...

Page 14: ...In addition the coaxial cable feeding the antenna should have the shield grounded to eliminate the risk of any indoor equipment failure from allowing hazardous voltages from appearing indoors and cre...

Page 15: ...ller U bolt Antenna side 19 195902 Smaller saddle Antenna side 20 735 1799 Base bracket 21 195726 Larger saddle Mast side 22 010404 Larger U bolt Mast side 23 564792 5 16 Split washer 24 555747 5 16 H...

Page 16: ...eck or money order must be provided to cover 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 58...

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