[TowerTalk] New antenna?

[Jim Brown]

On 3/30/2026 6:30 PM, Doug Renwick via TowerTalk wrote:
>   Nothing scientific

That's exactly why you don't notice differences -- band conditions 
easily obscure the differences. The difference in gain, averaged over 
each band, between the large Moseley and Force 12 tribanders was 5-6 dB. 
6 dB is an S-unit, corresponding to 4X the transmitter power.

BTW -- it is not "bashing" to do well controlled measurements and 
publish the result.

The report on these tests is "HF Tribander Performance, Test Methods & 
Results, 2nd Edition" by Ward Silver, N0AX and Steve Morris, K7LXC." It 
was published in 1999 by Champion Radio Products.  There's also a report 
on a later test of HF multiband verticals. Each costs $20. Ward retired 
from ARRL a few years ago, where he was responsible for updates to The 
Handbook, The Antenna Book, and authoring other books, including the 
ARRL Book on "Grounding and Bonding." I worked with him for about 15 
years on all three books. Ward is a VERY smart engineer.

https://championradio.com/product-category/publications/

N6BT has published several editions of his very useful book about 
antennas and their design called "Array Of Light." I have either the 2nd 
or 3rd edition (currently loaned out to a new ham, so can't look at it). 
It is written for those who are not engineers, but this engineer learned 
a lot from it.

The current edition is the 4th, and a description on his website says 
it's focused on HF verticals, which is has been his small company's 
focus for a decade or so. For the discussion of HF Yagis, you want the 
earlier edition.

This is the newer book. https://n6bt.com/on-line-check-out-cart

73, Jim K9YC