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Date: Sat, 18 Feb 2006 20:39:40 -0500
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From: "Robert R Pastusek" <rpastusek@htii.com>
Subject: RE: Comm Antenna ground plane-ACTUAL TESTING
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Tim Ong wrote:

Just some other data points as we have done quite a bit of testing in the
last year on ground planes. Conductive paint ground plane with external com
antenna  VSWR 1.15:1-1.3:1 at mid freq. Copper mesh or aluminum tape ground
plane on inside VSWR 1.7:1-2.0:1 at mid freq. No ground plane only using
carbon
VSWR 1:8:1-2.4:1 at mid freq. These were actual tests conducted on multiple
airframes using a digital VSWR
meter.

Tim,

MANY THANKS for all of us for this information. Few of us have the ability
to conduct actual tests over more than a very small sample size/example, and
providing this type of information when you have it is a tremendous help. My
plane is already painted, and I am therefore reluctant to apply the
conductive paint, but you can be sure that I will do so if/when the bottom
gets repainted. The numbers above make the case well.

This type of "factory" involvement and participation in our projects is one
of the principal reasons I chose to build a Lancair, and I am personally
pleased to see you (and others) pick up the gauntlet and continue to run
with this support. It gives Lancair a significant marketing advantage--at
least to me.

Bob Pastusek