Richard

I dont have any *one* Yagi design to recommend for your 160 MHz
application. But, I sure do like playing with Yagis. I have a few
questions about your design plan for this antenna.
The gain from a 3 or 4 element Yagi isnt more than you could get from a
omniazimuth colinear array, and I suppose you will prefer vertical
polarizathion.

Jerry





"Richard" wrote in message
...

"Richard" wrote in message
...
I'm wanting to build a receive VHF yagi covering the marine band, that is
from 156.025 - 162.05 Mhz (6 Mhz frequency range).

I want a design that maximises gain.

I would have thought that what I need is a wide-band yagi, but that's
all,
not a very-wide band yagi.

Should I be using OWA design? Or what?

BTW, given the frequencies above, what is the yagi bandwith I'd require?
I
mean, should I be building a yagi described as having a 6Mhz bandwith?

TIA.


Futher: Some time ago I did download 4nec2, and obtained some yagi models.
I
would have thought that all I have to do is scale one of these models and
then make corrections for the physical construction.

I managed to catogorise the models thus:

DJ6BV
OWA
SM5BSZ
VK3AAU
W6SA
Wideband Yagi (eg such 220-4eleYagi.nec) Not sue what this design is.
Wideband yagi W4NRL
Yagi (eg 220-3eleYagi.nec) Not sure what this design is.

One of these designs got to be wideband and maximised for gain I suppose.