[50mhz] Antenna Modeling

[Roger, K4RW]

Dan,

I would suggest downloading the free "MMANA" (just Google for link) antenna
modeling software.  Plug in your antennas element and spacing dimensions,
select the free space or different height parameters and see what MMANA
comes up with.

Roger, K4RW

-----Original Message-----
From: 50mhz-bounces at mailman.qth.net [mailto:50mhz-bounces at mailman.qth.net]
On Behalf Of Dan Schaaf
Sent: Sunday, June 26, 2011 7:49 AM
To: 50mhz at mailman.qth.net
Subject: [50mhz] Antenna Modeling

Hi All,

I have a Diamond A504HB 4 element yagi for 6 meters. 
The manual says that it is 10.8 dbi gain.
I am not sure what to believe because that seems pretty high for a 4 element
yagi with 10.66 ft length boom.

Has anyone ever modeled this antenna? Or is there anyone here who is willing
to  model it? I have all of the construction details. 

I am in SW Florida and have worked as far as several JA stations with it but
they were just above the noise. Last night JA6GCE was coming in and he was
the strongest that I had ever heard a JA but still not moving the S meter.

Now, I have to say that this yagi is on top of a 28 ft tower and so I know
that I am height limited. But I am just curious of it's real gain compared
to other antennas on the market.

Dan Schaaf

==================================
K3ZXL www.k3zxl.com
Cape Cod Instruments www.gnm-inc.com
NOBSKA www.nobska.net
==================================
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