Related Manuals for MFJ MFJ-1835
Summary of Contents for MFJ MFJ-1835
- Page 1 MFJ-1835, MFJ-1835H 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. MFJ’s highly efficient Spider-Match® matching network and adjustable tuning tabs guarantee low minimum-SWR on every band. The MFJ-1835 and MFJ-1835H measure only 9-feet on a side, yet feature a full half-wave element on every band for no-compromise DX performance -- even when running QRP! Best of all, these antennas are solidly constructed to take on extreme weather.
- Page 3 Before continuing with assembly, flip the spreader frame over and mount it on a temporary mast (5-6 feet). Not that the MFJ-1835H matching unit is slightly heavier, so the mast is installed on the outside of the mast-mount bracket in order to balance the...
- Page 4 [ ] For the MFJ-1835, install the two U-bolt assemblies inside the mast mount bracket and secure the temporary mast. The U-bolts accept tube diameters up to 1-3/4". [ ] For the MFJ-1835H, install the two U-bolt assemblies outside the mast mount bracket and secure the temporary mast.
- Page 5 [ ] Install the 12-meter loop using the same procedure outlined above. [ ] Install the 15-meter loop. [ ] Install the 17-meter loop. [ ] Install the 20-meter loop. [ ] With all five element wires installed, reduce wire sag by relocating the rig lugs (as needed) to other mounting holes in the insulators.
- Page 6 Take the time to re-adjust -- it’s time well invested. Antenna Tuners: You may use the MFJ-1835 or MFJ-1835H in conjunction with a tuner to achieve full-band low-SWR coverage on the wider bands (20, 15, and 10 meters). A tuner will also prove helpful if the elements accumulate ice, snow, or heavy rain (precipitation loading normally lower resonant frequency).
- Page 7 The balun also reduces receiver-noise pickup and spurious RFI signals generated by consumer devices. Weighing just over eight pounds, the MFJ-1835 and MFJ-1835H install easily on portable or permanent masts from 1-1/4” to 1-3/4” OD.
- 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.