Subj : Re: 9 el Tonna v 12 el ZL special
To   : alt.ham-radio.vhf-uhf
From : Steve
Date : Sun Oct 09 2005 20:42:39

From Newsgroup: alt.ham-radio.vhf-uhf

Simon wrote:
> Hi all,
> Has anyone any experience of these 2 antennas, I am currently using the 9
> element Tonna which is around 10.95 db gain, the 12 el ZL special on
> Moonrakers website quotes a gain of 14dbd. This seems very high for such a
> short boom. Any info would be helpfull as Im having a hard time believing
> the claims.
> 
> Thank you
> Simon
> 
> 
Simon

I would stay with the 9ele Tonna.

The 9ele Tonna is a respected antenna in the VHFDX world and many 
portable DX stations, and fixed, use them. Not optimised like the Msq or 
Vargarda but still capable of good performance. The Tonna aerials also, 
despite their fragile appearance, are very well made and last well.

Gain is proportional more or less to boomlength, in a reasonably linear 
fashion and extra elements/fancy driven elements in that boomlength do 
not add to gain.

Given the above, ask yourself whose adverts you believe most!

HTH Steve G8IZY

.