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CORRECTION - I mean to write 90 radials rather than 90 verticals!!!
"John, N9JG" wrote in message news:r8TBf.756002$xm3.570205@attbi_s21... Well you always wonder if the guy was trolling me, but I wasn't about to plan on spending the spring putting in an additional 90 verticals unless there was the prospect of a reasonable payoff. -- John "Richard Clark" wrote in message ... On Wed, 25 Jan 2006 21:25:50 GMT, "John, N9JG" wrote: If I am interpreting this graphic correctly, the gain increase from 32 radials to 128 radials is about 0.5 dB. Hi John, Well, if you read the site closely, there are far more variables involved than one graph offers a final answer to. On the other hand, if this graph accurately represents all those variables converging on your conditions; then, yes, it is a huge increase as reported. You can, on your next QSO offer to that operator that it probably will boost your signal one half of an S-meter needle's width. 73's Richard Clark, KB7QHC |
#2
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"John, N9JG" wrote in
news ![]() CORRECTION - I mean to write 90 radials rather than 90 verticals!!! Heh heh. There does come a point, though, where more verticals will achieve the same result at less expense than more radials. I've found that 8 radials of about the same length as antenna height works well, even with multiband antennas. And a second antenna will recover the gain to the same level as 120 radials (standard broadcast design), plus providing a steerable pattern. Coils eat up as much and can be eliminated, or made smaller with top-loading capacity hats. Or, for radial-free performance, design it as an end-fed half-wave! -- Dave Oldridge+ ICQ 1800667 |
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