[amsat-bb] Re: Duplexer for Sats
kq6ea at pacbell.net
Mon Sep 22 10:47:33 PDT 2008
IIRC, Ken Brittain (sp?), father of the "Cheap Yagi", had a mention of this in his CQ VHF column. It was noted that the original design of the Arrow apparently used a formula for insulated elements on the UHF side. This resulted in the elements being about 1/2" too short.
I don't have that issue of CQ VHF with me, but it was published about 2 years ago.
--- On Mon, 9/22/08, David - KG4ZLB/MØZLB <m0zlb at btinternet.com> wrote:
> From: David - KG4ZLB/MØZLB <m0zlb at btinternet.com>
> Subject: [amsat-bb] Re: Duplexer for Sats
> To: amsat-bb at amsat.org
> Date: Monday, September 22, 2008, 9:31 AM
> A closer look at that document reveals that it was written
> in September
> 2006 and towards the end of it mention is made of the
> possibility of a
> second article about tweaking the standard Arrow for more
> gain - does
> anyone know if that article has been written/published or,
> for that
> matter, does anyone have any links to sites that describe
> Pughkeithd at cs.com wrote:
> > In a message dated 9/22/2008 10:41:01 AM Central
> Daylight Time,
> > satkins at inetdesign.org writes:
> > Stephen,
> > Check this out:
> > A duplexer is built as part of the antenna
> combination, but could be done
> > separately if necessary. Any 50 ohm coax and
> connectors could be used. This one
> > does feature inductors wound on a pencil.
> > 73 - Keith, W5IU
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