[Antennas] Request from CO8LY

Thu Mar 19 14:21:46 EDT 2020

On 19 Mar 2020 at 13:34, co8ly wrote:
> Dear friends, I have a 3 element yagi model Hornet for 20,15 and 10m
> that I would like put together but being a model from the 60s it is
> very difficult to find the manual or the scheme on the internet, maybe
> you have some information about a 3-element yagi multiband model HORNET
> TB - ????. 

Hello, Eduardo:
I have several bits of documentation on various Hornet models. However, there were 
several Hornet models of tribanders which were NOT for the ham bands!
If the length of your two-piece boom is "short", like 13 feet long, that is one which is most 
likely for the ship-bands, starting around 16 MHz.
If your boom is around 18 feet long, then that IS a ham-band model.
I can send you what I have in PDF format, if that will work for you.
I found that using an antenna analyzer, like the MFJ-259 type, made my work on my own 
Hornet beam MUCH easier and far more accurate.
The Hornet company was sold to Swan, which then sold the same antennas under their own 
name. Also, there was a 4 element tri-bander made, first, by Hornet, then by Swan. I have 
some very minor info on that one.
In my own case, a friend found most of the parts for the 4 element tribander in a garage in 
Oregon and gave those to me. Using those parts and my short boom, I was able to build a 
tri-bander which tuned up correctly using the MFJ-259. 
Modelling it using MMANA-GAL, I find that the forward gain is very close to identical to what 
it would be with the longer, 18 foot long, boom, but the front-to-back ratio is poorer. As soon 
as I can, I am going to find and buy the necessary material to make an 18 foot boom, then 
will reassemble my antenna.
vy 73 for now,
Ken W7EKB