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Behold, Dale Parfitt signalled from keyed 4-1000A filament:
Gregg wrote: Behold, Dale Parfitt signalled from keyed 4-1000A filament: Gregg wrote: Behold, Dale Parfitt signalled from keyed 4-1000A filament: Antenna theory, and NEC modeling radically disagree with this- How many antennas do you want to see that are not 1/2 wave above a perfect ground and yet show outstanding directionality? W4OP Phased arrays can be made directional. We are talking longwires here. So am I. The higher a longwire antenna is in terms of wavelength, the better defined the nulls become; i.e. its directional characteristics are enhanced. Nothing magical about 1/2 wave above perfectly conducting ground. If you can read AO files, I'll be happy to send a file demonstrating this. W4OP Great! I learn something new every day :-) AO file? I'm sure I can apt-get something to read them (I run Linux). Fire away! geek at scorpiorising dot ca Hi Gregg, You will need any version of Antenna Optimizer. Alternatively, I can probably generate an EZNEC file- a demo version of which can be downloaded from the EZNEC site. Dale W4OP Antenna Optimizer? Sounds like a nice toy. What's the URL for it? -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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