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I do not assume anything. I did not say "astroplane antenna is the best". I wonder.Now what are the tests to ensure that the Gainmaster and V4000 are the best? like that? .64 Wavelength Secret - K3DAV - Amateur Radio Operator hand drawings!!! ;) "Why Gain-Master™...

bullshit :confused1: bullshit is a SIRIO VECTOR 4000 "SUPER ANTENNA" :laugh: if THE ANTENNA VECTOR 4000 was as good as they say it is their manufacturers, advertising with us obliterates radiation diagrams, but it is that they are non-existent, not seen anywhere, no, not published anywhere...

yes! this is! :wink: For the rest. I do not say that: the best antenna is the astroplane. I say "ASTROPLANE best vertical antenna ever?" :biggrin:

Sory, i'm no speak english. Well, if it comes to feeding a dipole at the center, just have to do it with a odd number of segments, we choose the center segment and problem solved. If it is an inverted v antenna, only the middle segment bends 45 degrees and problem solved. :wink:

What is the reason to say 4000 or Gainmaster vector are better antenna?? Models??* True models including masts and coax do not say that. All they say is, " it's better because it's bigger, has more signal" etc. But the more the signal, noise is absent, or are also more noisy? Because if...

I do not know for what reason they can think of to use two points in a single antenna feed. It makes no sense. Should be taken into account when modeling, that the feeding point are the two that correspond to a radio frequency feed line, be it coaxial, parallel, etc.. In this place, the...

"If to this antenna it it is installed vertically with the radiant up the name of antenna J which is a Zeppelin antenna takes a form similar to the letter "J", and here." :thumbup1: LU6WG Radio Club Puerto Madryn :tongue:

the load impedance has nothing to do with the antenna. An Zepellin antenna can be loaded 10-20-30-40-50-75-100-500-6000 ohms I'm going to invent a new name for each load?? :biggrin: :thumbup1:

A ground plane less than a quarter wavelength, is useless, only to take money from the buyers. :laugh:

Is a copy of the old AV-174 AVANTI :whistle:

Hello Well, I think the problem is the mast, and length. I would sort reins pulling three insulators at 10 feet from the anchors and mounting the antenna.(first ground strap) These three reins, both would work as a ground plane. He always did so to my monopoles and the result was 100 x 100...

hello Marconi , device drivers and adaptation of systems trombones, gamma-match etc , introduce losses irradiation and reception. These are proportional to the diameter and length of them . A larger diameter , the greater loss. Who can assume that a driver does not radiate trombone...

Another option is Wilson "Flex" Silver Load Series Whips 4'' :thumbup1:

I do not make assumptions, and repeat like a parrot what was written in a book. I do every day experiences. :thumbup:

hello. I find it much easier didactic, complete the 4nec2. :thumbup1: EZNEC do not like, I find it bizarre and little graphic...:mad: :thumbup:

error I do nightly contacts within 200 kms with 12watts 22 hours after many years. Buenos Aires-Gualeguaychu-Paysandu-Fray Bentos and more cities. and that is not spatial wave has no qsb, the signal is weak, but sustainedwith clear audio. nosepc :blush:

hello Hello again. I find all this very interesting discussion thread. And what I'm taking in conclusion ... is that the other "super" famous vertical antennasnot as good or better, but rather commercial properties are myths.?? Not in actual field tests, or models are large...

This very interesting. Actually the difference between antennas is negligible, and it is there where other factors come much or more important, ... which is the signal to noise ratio. If an antenna receive a station with "signal 4" but has 3 of noise signal,.. and another antenna only...

Avanti says the ASTROPLANE has 4.6dBi, something 1dBi over the best 5/8. To me it is a coaxial antenna induced capacitances for a good decoupling of the feed line, and that this does not interfere with the lobes of irradiation. It is true that the top hat also serves to respect regulations...

http://www.nonstopsystems.com/radio/antenna-loading-coils.pdf :thumbup1: