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Text File
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1987-02-28
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2KB
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43 lines
=== 2 Meter J - Pole made from 300 ohm twin lead ===
(Taken from Jan. 1984 D.A.R.C. antenna article by James Burks, KA5QYV)l
_______ _____ <== DON'T SHORT THIS END
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54 in. | |
| | _| __________
| | |_ __________}1/4 inch gap
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attach shield==>| |<==attach coax center conductor____
| | | 16 3/4 inches |
| |_____| | 1 1/4 in.[adj. this length
___|___ |___| __________|____________________|_ for min. SWR]
^
<Solder the twin leads together here>
1. Start with 54 1/2" of good quality TV lead.
2. Strip 1/2" of insulation and solder wires together.
3. Measure 1 1/4" from bottom and strip insulation.
This is solder point for coax feedline. (center on short side)
4. Measure 16 3/4" from bottom and cut out 1/4" notch.
This tunes antenna to middle of 2 meter band.
5. Feed with a length of RG58U coax. Tape coax at
feedpoint to the twin lead.
6. Antenna may be sleeved inside 1/2" PVC for outside
mounting or thumbtacked to an inside wall.