I don't think EZNEC tells you the whole story, in this case - I would
expect that high yagi to give you much better signals into the West
Coast by virtue of the lower angle of radiation. This problem would be
duck soup for MultiNEC, which combined antenna patterns with propagation
data and produced coverage maps - too bad it's off the market now.
73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at
reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000
On 8/26/2010 8:03 AM, DF3KV wrote:
> Yes, I have a three stack of 5L KLM yagis.
> The lower two are hard wired phased and fixed direction U.S.
> If I add the highest yagi to the stack I almost always get 10db higher
> differences reported from west coast stations.
> The EZNEC simulation shows just +2,31db
>
> 73
> Peter
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim Thomson
>
> ## Does anybody else see similar effects... whereby gain differences are
> way nore than what
> software predicts? The diff between a rotary dipole on 80m.. and a 2-el is
> another one that baffles
> me [same deal on 40m]. It's like throwing a light switch.
>
> later... Jim VE7RF
>
>
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