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Re: Myers' BBQ Grill



Can someone give me the details of the stub. I need to know what coax it is
(ut 141?) and the lengh. I will simulate it and suggest things that need to
be done if any.

Pieter

----- Original Message -----
From: "Greg Dolkas" <greg@core.rose.hp.com>
To: <amsat-bb@AMSAT.Org>
Sent: Monday, May 14, 2001 11:51
Subject: Re: [amsat-bb] Myers' BBQ Grill


> >
> > Further to my query regarding the short circuit at the connector.  I
have
> > opened up the housing and discovered the reason for the short.   There
is a
> > quarter wave stub at the centre of the dipole.   The centre of the coax
is
> > soldered to one side of the dipole and the braid at the shorted end of
the
> > stub.  Quite obviously this is a matching technique and the antenna
should
> > be fine at RF.
>
> "Fine", of course, is a relative term.  The stub was undoubtedly designed
> for around 2.6 ghz.  Can anybody calculate how much is lost when it is
> run at 2.4 ghz?  I am wondering if this is a factor in why I'm having
> such poor reception with my Lance BBQ grill and feed.  At DC it measures
> about 1 ohm, so the construction might be similar to yours.
>
> My guess is that it probably isn't enough to notice, but I want to look
> at everything.
>
> Thanks,
>
> Greg.
> ----
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