[Antennaware] YO modelling question

Wolf, James - ES James.Wolf at itt.com
Wed Sep 14 06:20:14 PDT 2011


As I recall (which is questionable), the Hy-Gain element to boom clamp model takes into account the boom where the element is grounded to the boom. The variable is where the driven element has the element to matching network wires connected and how long they are.

Jim, KR9U

-----Original Message-----
From: antennaware-bounces at contesting.com [mailto:antennaware-bounces at contesting.com] On Behalf Of Charlie Ocker
Sent: Wednesday, September 14, 2011 6:26 AM
To: antennaware at contesting.com
Subject: [Antennaware] YO modelling question

Greetings, all...

I have a question for any YO (Yagi Optimizer) users out there.

What is the proper method of measuring the first element segment length
of a antenna using Hy-Gain element-to-boom clamps?  The manual implies
measuring from the center of the boom to the end of the first tubing
section, but this doesn't seem quite right.  The code takes into account
the Hy-Gain element-to-boom clamp and creates an electrical tubing
equivalent.  I would expect that the values shown in the Taper Menu are
the *exposed* element lengths... at least this is how I've used this
info in the past, to great success, I might add.

BTW, I'm using YO version 7.65, it is now over 6 years old, but I
haven't found anything out there that does what it does.

Many thanks in advance.

Charlie  N9CO

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