MFJ 1848 HEX Beam
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| Jul 9th 2021, 11:03 | |
Lgaley1975Total Topics: 0 Total Posts: 0 |
Hello all: I purchased a MFJ 8 band hex beam and now that I have it assembled in my tiny lot, I am having difficulty tuning it. Most notably 30M and 40M, MFJ finally admitted to sending the elements out longer than needed. I was advised to approach the situation as if it was a dipole. The 30 m wire was sent at 52 feet long which I was instructed to cut in half . that means each half is 26 feet long plus an inch or two, way long for 30 meters. My calculations indicate that 10.100 mhz = 23 ft 2.75 inches 10.150 mhz = 23 ft 1.34 inches What length should I cut my wires ? I tried folding the wires back on themselves but antenna remained resonant at 9.700 mhz and would not change, this is my last ditch effort on 30 m 40M is another enigma, the best swr I get is 2.0 at 7.150 mhz. MFJ sent me a 72 ft wire (2 x 36 ft) My calculations say that the Lower and and upper end of the band should be 7.000mhz 33 ft 6 in 7.300 mhz = 32 ft 1.6 in. how should I trim my wires? to the long length or the shorter length?? All help appreciated LARRY KC4JPD |
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