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Get Price2015-1-20 · you begin with, drill an appropriate number of 5/16 in. hole pairs, three inches apart, on opposite sides of a fiberglass pole section, as shown in Figure 4. Each turn requires 36½ in. of tubing. Add six inches at the top and two feet at the bottom for the connection to the aluminum pole sections.
Get Price2005-12-8 · Determine the vertical and horizontal components. (Answers 24.5 N and 52.6 N) 4. Calculate the momentum force on a 180o bend that carries 5 kg/s of water. The pipe is 50 mm bore diameter throughout. The density is 1000 kg/m3. (Answer 25.46 N) 5. A horizontal pipe bend reduces from 300 mm bore diameter at inlet to 150 mm diameter at outlet.
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Get Price2019-1-22 · 160M Is a Tough Band • Propagation quite variable, signals often not very strong, heavy QRN during the summer –Mostly a nightime band, varies a lot through the night –During the winter, 800 miles or more is possible 2 hours before sunset, 2 hours after sunrise
Get Price2015-1-20 · you begin with, drill an appropriate number of 5/16 in. hole pairs, three inches apart, on opposite sides of a fiberglass pole section, as shown in Figure 4. Each turn requires 36½ in. of tubing. Add six inches at the top and two feet at the bottom for the connection to the aluminum pole sections.
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Get PriceIn this case, 450-ohm line would be even better, because its characteristic impedance is closer to the geometric mean, so the SWR only varies from about 9:1 at 50 ohms to 7.7:1 at 3500 ohms. The total losses for 100 feet of 450-ohm windowed ladder-line, at 9:1 SWR, ranges from 5% at 3.5 MHz, to 14% at 28 MHz, and again, that’s at the worst ...
Get PricePile foundations (Fig. 8.26), where decay is present, do not necessarily lose their load-carrying capacity to such an extent that replacement becomes unavoidable.If the sapwood of timber piles is deteriorated, the remaining heartwood section might still have sufficient load-carrying capacity.
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