[VHFcontesting] 2m yagi on 432

[Paul Kiesel]

20 years ago, when I lived in DM82, I worked a station
in EL29 on 1296 MHz. The antenna was a K2RIW
19-element 432 MHz yagi. At the time, I was running
1.5 watts output. Tropo conditions were there, for
sure, but I'm glad I thought of the 3/4 wave element
length relationship. By the way, there was no front
lobe, as others have surmised. I had taken down my
1296 loop yagi for maintenance.

K7CW

--- Tom Carney <tomc7 at earthlink.net> wrote:

> jcplatt1 at mmm.com wrote:
> > As Tree has pointed out, a 432 yagi is 3/2
> wavelengths on 144 and it may
> > show a decent SWR.   The pattern will be anything
> but decent and will most
> > likely have a null straight ahead.     The antenna
> may have some gain, most
> > likely 45 degrees off of "straight ahead".   Then
> again, it may have its
> > best gain off the back.    Interestingly, if you
> sweep each side of each of
> > the 2m elements forward 30 degrees ala a TV
> antenna, the 432 pattern cleans
> > up pretty well and it has gain ..... not as good
> as a monoband 432 yagi,
> > but pretty good, and the gain that is lost on 2m
> is very small.     Its
> > possible to have a small portable/rover 2m & 432
> yagi using this principle,
> > .... at least playing around with EZNEC says so.  
>  Anyone try this ?
> > 
> > 73, Jon
> > W0ZQ
> > 
> 
> Thanks for the rover ant suggestion.  I may give it
> a try.
> 
> As for John's 10 el 2M ant, I've used one on 432. 
> As you say the max 
> gain is at 45 deg off of center.  I did some testing
> with a local and he 
> reported it 2M ant was about an S unit and a half
> down from my 8el 432 
> Quagi.  Over a longer path (100+ miles) the quagi
> was definitely better 
> but not 1.5 S units.
> 
> 73,  Tom K6EU
> 
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