Topband: Boring phased array update

[Michael Tope]

----- Original Message ----- 
From: "Tree" <tree at kkn.net>
To: <topband at contesting.com>
Sent: Sunday, January 06, 2008 8:45 AM
Subject: Topband: Boring phased array update


>
> Well - I need to admit I was mistaken about how well my phased array
> was working - and now have to agree with the experts that predicted
> that my gamma matched tower was going to introduce a variable into
> the equation.
>
> I setup a monitoring antenna about 200 meters away from the two verticals
> (one is a gamma matched tower - the other is a wire tee element).  I
> brought the coax into the shack and used a scope - triggered from some RF
> from the transmitter.  I was able to measure the relative phase delay
> for each of the two elements (with the other one out of the picture) and
> found that I had something around a 35 degree phase difference.  It seemed
> that the phase delay from the gamma matched tower was "less" than the wire
> antenna.  The absolute values are not important - since there are too
> many variables like coax and path lengths involved.
>

Tree,

How were you taking "the other one out of the picture". This
is pretty important because of the mutual coupling.

Mike, W4EF............................................