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Cecil Moore wrote:
Jozef wrote: I took scrap pieces of aluminum tubing lying around, not being particularly careful of sizes as along they fit snugly into adjacent pieces when they were slotted. I used hose clamps. I made it 33ft and 3 inches tall (1/4 wave on 40)... The Palstar has no problem matching this vertical on all bands 40 through 6 meters including WARC though 12 meters is the trickiest. That antenna is 5/8 wavelength on ~17.5 MHz. Above 21 MHz, most of the radiation is lost at a high elevation angle. Such an antenna is a poor performer on 15m, 12m, 10m, and 6m. Matching doesn't mean much for a monopole appreciably longer than 5/8 wavelength. -- 73, Cecil http://www.qsl.net/w5dxp I have an almost identical vertical with a relay controlled loading coil I switch in for 160 and 80M and a SGC tuner. Works great 160 to 30M. Marginal at 20M and goes to poor from there up. -- Jim Pennino Remove .spam.sux to reply. |
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