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IMAX 2000 GROUND PLAIN?
- Thread starter MADMAXS 455
- Start date
Right.
I just checked the GPK-1's radial length. They're six feet. I could always use my DX Engineering rigid Aluminum tubing I have and extend them to 8.66' or more.
Agreed.The gp kit is a waste of money. As said
earlier isolate the mast fit a choke on the coax and if you want ground planes make your own 1/4 wave long.
earlier isolate the mast fit a choke on the coax and if you want ground planes make your own 1/4 wave long.
isolating the imax and adding a feedline choke without radials expecting that to minimise or eliminate cm current on the coax braid won't work,
w8ji explains why that is & kirchhoff's current law tells us he's right,
the solarcon radial kit can work ok with isolation and a choke to minimise cm current issues, the radials need not be 1/4wave.
w8ji explains why that is & kirchhoff's current law tells us he's right,
the solarcon radial kit can work ok with isolation and a choke to minimise cm current issues, the radials need not be 1/4wave.
Some materials I've read state that a satisfactory GP kit can work with as little as 1/8 wavelength radials. Sirio makes more than one antenna model with short radials, but seem to favor adding to the number of radials in the GP when they shorten them.
I made one EFHW with shortened radials - 12 of them. It is also said that the 1/2ƛ End Fed doesn't need radials, even in this thread. I agree, but I disagree it doesn't require the "other half" of the antenna. I can not certify under scientific conditions that my 1/2ƛ end fed worked better with the radials than without, however, the degree of tuning and retuning I did when I added them certainly seemed to me to produce the best performance with an EFHW I've had.
I made one EFHW with shortened radials - 12 of them. It is also said that the 1/2ƛ End Fed doesn't need radials, even in this thread. I agree, but I disagree it doesn't require the "other half" of the antenna. I can not certify under scientific conditions that my 1/2ƛ end fed worked better with the radials than without, however, the degree of tuning and retuning I did when I added them certainly seemed to me to produce the best performance with an EFHW I've had.
I resurrected this thread to find out more about the A99.
I think I need to find out if a GP is even feasible for an end fed.
EFHW
http://www.aa5tb.com/efha.html
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I noticed that the Antron 99's install sheet shows the specs as 9.9dbl,not dbi.
http://webzoom.freewebs.com/g8jnj/Solarcon.pdf
How is antenna gain (dBi) measured and used? Wireless ISP FAQ | DSLReports, ISP Information
http://webzoom.freewebs.com/g8jnj/Solarcon.pdf
How is antenna gain (dBi) measured and used? Wireless ISP FAQ | DSLReports, ISP Information
Attachments
bullshit
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, not are.
I have not seen anywhere radiation diagram of a real antenna.
why?
In any case, so there is a hand drawing
bullshit
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, not are.
I have not seen anywhere radiation diagram of a real antenna.
why?
In any case, so there is a hand drawing
That is too bad that you haven't found out about the V4K.
That is your fault; not ours - now that you have been made aware of it.
SIRIO V 4000 "Gain: 2 dBd, 4.15 dBi"
http://www.cbtricks.com/ant_manuals/avanti/av101/ad/index.htm
ASTROPLANE 4,46 DB........
SIRIO V 4000
It's not new, it's very old AVANTI AV174 :bdh:
http://cbtricks.com/ant_manuals/avanti/av174/graphics/sigma4_av174_om.pdf
NOSEPC
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SIRIO the extension to 7/8 and got nothing :laugh:
NO LONGER IS BETTER. :laugh:
now returned to the measures listed AVANTI!!