[Elecraft] OT: Vertical doublets (was: Home made Sigma-GT5 & KRC2 or SGC?)

Thu Mar 25 20:28:00 2004

Run it in any modeling program that has real ground parameters (EZNEC
3 for windows, etc).

In the ARRL Antenna book 18th edition, pp. 3-4 and 3-5, in the text,
also compared very plainly in figure 4. Taking the maximum gain at
7.41 in the pattern in figure 4A, you can see that the gain of the
vertical is about 0 dbi. If the downward radiation was reflected up
into the upper hemisphere, the gain should be AT LEAST 3 dbi.

This is as opposed to a 7 dbi gain over saltwater in figure 4B.

These sort of details are in every antenna book I have.

???

73, Guy.

----- Original Message ----- 
From: "Stuart Rohre" <[email protected]>
To: "Guy Olinger, K2AV" <[email protected]>; "Elecraft Reflector"
<[email protected]>
Sent: Thursday, March 25, 2004 3:03 PM
Subject: Re: [Elecraft] OT: Vertical doublets (was: Home made
Sigma-GT5 & KRC2 or SGC?)

> Guy,
> I cannot find your assertion of 3dB loss from a vertical dipole
supported in
> any of the antenna literature.
> (Some dozen books or more)  Do you have a reference book?
> Thanks,
> Stuart
> K5KVH
>
>
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