R: [amsat-bb] QHA design for 435 MHz

["i8cvs" <domenico.i8cvs@xxxxxx>]

Hi Dave and Gopal

I have scaled a Quadrifilar Helix Antenna namely QFH for 435 MHz
and i got excellent results so that i have written an article for Radio
Rivista 10/1989 edited by ARI

Radio Rivista is ISSN 0033-8036

The article "Antenna Quadrifilare per 70 cm" page-23 to 30 is written
in italian but the drawings and photos with measurements to duplicate it
are for everybody.

If you aegree i will send to you and to Gopal a scanned file of the article
as well to everybody will request it to me.

Waiting for an answere from both of you.

In addition i have built and experimented over four different QFH for
2400 MHz and my article "Experimental investigation with Quadrifilar
Helix Antennas for 2400 MHz " has been published in German in to the
AMSAT-DL Journal December/February 2003/2004 but it will be
published as well in English in to the AMSAT Journal  Mar/Apr edition

Best 73" de

i8CVS Domenico




----- Original Message -----
From: Dave Guimont <dguimon1@san.rr.com>
To: Gopal Madhavan <gmn@giasmd01.vsnl.net.in>
Cc: <amsat-bb@AMSAT.Org>
Sent: Tuesday, January 27, 2004 5:34 PM
Subject: Re: [amsat-bb] QHA design for 435 MHz


>
> >I have seen the excellent descriptions for the QHA antennae for 136 and
> >144 MHz and as the author has said that he has not had success in
> >scaling for 435 MHz, I wonder if anyone has done it and if so where
> >could I get details.
>
> I scaled FROM 435, and they all work equally well...
>
> quadfil1.ZIP  and  qua*.* at
>
> http://home.san.rr.com/doguimont/uploads
>
>
>
>
>
>
>             73, Dave wb6llo@amsat.org
>                     Disagree: I learn....
>
> ----
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