On Tue, 19 Oct 2004 14:02:18 -0400, "G&R" wrote:

|Hi Wes,
|
|Yes I am aware of the difference between the advertising on the site and the
|range results.

So are you going to fix it or not?
|
|As you are aware antennas do not have even gain across the entire band. We
|have designed the antenna to cover the entire 2m band and as a result do see
|a variation in the perfromance across the band, hence max gain.

Huh? So are you saying that you have nearly 3 dB gain variation in 2
MHz.?

|
|And before you cut down my comments, the precision on the results are from
|the softare and we are in the process of redesigning the format to more
|accurately reflect our actual results both modelled and actual.
|Unfortunately our business is antennas and web design.

In a paper I wrote for the ARRL Antenna Compendium, I said,
"Simplified 'antenna analyzers', especially those with digital
readouts can lull the user into unjustified confidence in the accuracy
of his measurements."

Change the words "antenna analyzers" to "computer software" and it
describes this situation to a T.

|
|The results posted on the CSVHF society are valid as the antenna was tested
|with a gain of 11.2dBd at 144.18MHz Horiz Polarization. Design Freq is
|146.0MHz.
|
|We are in the business of designing and selling antennas not developing
|antennas and giving them away for free. However, if your serious about the
|data for the antenna contact me directly so that we can discuss the details
|(email listed below).

My slightly distorted email is above. If you choose to send me your
parameters, I promise to keep it in confidence. I don't not design,
or manufacture antennas (or anything else) for a living.
|
|As to the DATAQ, well I have no answer for that one, as we don't build it or
|sell it. Our software is designed to with run it. Strange though, my
|Toshiba does and so does my SONY through a USB to SERIAL converter.

I know you don't build or sell it, I'm just offering a caution to
those who might be tempted to buy one. It works on my desktop but not
my laptop, which is a pity because I had a portable use in mind.

|
|One final point, the purpose of the posting was that identify that an
|antenna does not always need boom length and elements for gain and that
|there are other ways to achieve this.

Absolutely. One driven element at the focus of a 40' parabola is a
decent antenna at 2-meters.

Regards,

Wes N7WS