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MFJ -1835 Instruction Manual

10,12,15,17,20 meter cobweb antenna

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MFJ-1835
10,12,15,17,20 Meter
Cobweb Antenna
Instruction Manual
Caution: Read All Instructions Before Assembling and
Using This Product!
MFJ
300 Industrial Park Road
Starkville, MS, 39759 USA
Tel: 662-323-5869 Fax: 662-323-6551

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Summary of Contents for MFJ MFJ-1835

  • Page 1 MFJ-1835 10,12,15,17,20 Meter Cobweb Antenna Instruction Manual Caution: Read All Instructions Before Assembling and Using This Product! 300 Industrial Park Road Starkville, MS, 39759 USA Tel: 662-323-5869 Fax: 662-323-6551...
  • Page 2 RFI. In addition, MFJ’s highly efficient Spider-Match® network and adjustable tuning tabs guarantee low minimum-SWR on every band. The MFJ-1835 only measures 9-feet on a side, yet it features a full half-wave element on every band for no-compromise DX performance -- even when running QRP! The MFJ-1835 is solidly constructed to take on extreme weather.
  • Page 3 people, pets, clutter and debris. Never assemble or install any antenna near power lines or residential entrance cables! Important Warning: This antenna is an electrical conductor and, if it comes into contact with power lines, you can be KILLED. Never assemble or install any antenna near power lines! Tools: 7/16"...
  • Page 4 [ ] Tighten down all of the 6-32 arm-mounting hardware at this time. Also, check the mounting bracket screws. [ ] Before continuing with assembly, flip the spreader frame over and mount it on a temporary mast (5-6 feet). Install the two U-bolt assemblies in the mast mount and secure the temporary mast.
  • Page 5 [ ] In similar fashion, install the other 10-meter wire, connecting the ring lug to the match box and routing the wire around to the opposite side of the frame. [ ] At the far end, connect the second wire to the opposite end of the insulator using the end-hole.
  • Page 6 New surroundings may cause one or more points to shift. Take the time to re-adjust -- it’s time well invested. Antenna Tuners: You may use the MFJ-1835 in conjunction with a tuner to achieve full-band low-SWR coverage on the wider bands (20, 15, and 10 meters).
  • Page 7 Coaxial Feedline: For best results, use new uncontaminated 50-ohm coax and avoid making splices that could take on water and cause contamination. The MFJ-1835 is light in weight and not designed for high power operation, so any premium grade RG-8X (or Mini-8) should work well (RG-58 okay for short runs).
  • Page 8 If manufactured by MFJ Enterprises, Inc. and purchased from an authorized dealer or directly from MFJ, we warrant to the original owner that this product shall be free from defects in material and workmanship for a period of 12 months from date-of-purchase provided the following terms and conditions are satisfied: 1.