One other note on the subject:
That reflector under the antenna he described is a waste of time. At
the angles he is interested in, it adds less than 0.5 dB gain vs a
dipole at 40 feet. There are other ways to squirt a bigger signal
straight up, but for us that is worthless.
I guess when that article was written (1980) the guy must not have had
EZNEC.
Jerry, K4SAV
K4SAV wrote:
>No, you got the message correctly. That optimum angle of 40 to 80
>degrees elevation for him becomes 20 to 35 degrees for us. So if you are
>going to have a reflector, better put it behind the antenna at the same
>height as the antenna. Actually a 40 meter yagi at about 50 feet would
>beat most everything for SS on 40 meters. If you only have a dipole,
>optimum height for us would be around 70 feet.
>
>Jerry, K4SAV
>
>Jay Pryor wrote:
>
>
>
>>Am I missing something? This antenna maximizes signal strength out
>>to 500 miles, which for K3LR "includes the high-density Amateur
>>population centers." But those same population centers are more than
>>500 miles away from my QTH so I think I'll stick with my dipole with
>>no reflecting wire.
>>
>>Someone please correct me if I'm wrong.
>>
>>CU in the SS.
>>
>>73,
>>
>>Jay, K4OGG
>>
>>
>>
>>At 07:34 PM 10/18/2006, Hal Kennedy wrote:
>>
>>
>>
>>
>>>Here is an old but good idea for little and medium sized pistols. This
>>>is a reprint from a 1980's NCJ, where W3LR discusses boosting the gain
>>>of a 40 meter dipole by placing a reflecting wire underneath it.
>>>
>>>Food for thought...
>>>
>>>http://img100.imageshack.us/img100/2694/40metersqy1.png
>>>
>>>Hal
>>>N4GG
>>>-----17 days to SS-CW ---------
>>>
>>>
>>>
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>>>
>>>
>>>
>>>
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>>
>>
>>
>>
>>
>
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