[TowerTalk] "Great Spider" Antenna and G5RV Question

[Bill Coleman AA4LR]

On 8/25/97 15:43, Mary-Frances R. Bartels at ki0dz@juno.com wrote:

>I'd like to use a smaller run of the thin
>coax from the G5RV and probably use thicker, RG8-type stuff.  Has anyone
>here any experience with deviating from the "standard" G5RV feed system
>described above?  Is it reasonable to use less coax?

Use whatever length of coax you need to get from the balun to the tuner. 
Don't worry about it. I would suggest you use only solid-dielectric coax, 
as on some frequencies there may be voltage nodes in the coax that could 
be quite high. 

There's nothing magical about the G5RV. It is merely an extended double 
Zepp for 20m. Using the feedline arrangement, it provides a good match to 
50 ohm coax on 20m, and isn't too terribly outrageous on other bands. 
When used in this fashion, it is merely a variation on a doublet with 
tuned feeders. 

I use a similar antenna, a 125 foot doublet fed with open wire to the 
house, a balun, followed by coax into the shack. Works great.



Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@radio.org
Quote: "Not in a thousand years will man ever fly!"
            -- Wilbur Wright, 1901


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