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Re: Clarc yagis





Did any of yall know Ed Ciecierski WB5WOU ?
> [Original Message]
> From: Grant Zehr <grant@dzehr.com>
> To: David Carr <dc@dcarr.org>
> Cc: AMSAT <AMSAT-BB@AMSAT.Org>
> Date: 3/6/04 11:02:10 PM
> Subject: Re: [amsat-bb] Clarc yagis
>
> I have used an 11 element version for my AO-40 uplink and it works great.
> Tunes up very nicely, with low swr , unlike some other things I have
tried.
>
> I thought the drawing was a little confusing too, but it's actually very
> easy.
>
> The Driven element need to be 13 in long.  Bend the end around to make the
> "J" and squish it out so the spacing is 3/8 inch.  The outside of the
curved
> part is where you put your ruler when you measure 13 inches.  Measure 6
1/2
> inches on the short side and make a mark.  That is where you want to
solder
> the coaxial cable.  The short end of the "J" should continue for another
1/2
> inch.  If you use 1/2 pine it comes out flush on the other side.  I would
> guess fiberglass should also work, but if you extend a full inch for
> mechanical strength, that will effect the tuning, I'm sure.  If I were
you I
> would save the fiberglass for another project and go to Lowes or Home
Depot
> and look for some straight pine 1/2 square.  Use a good outdoor wood
primer,
> the thick white stuff you would use to prime wooden window frames or
garage
> doors.  Then a nice coat of color...I used aluminum Rustoleum enamel and
it
> looks great!  Will probably have to replace the wood in a couple years.
>
> Set it up on a tripod or stepladder and check the SWR.  It will probably
be
> off a little.  Then clip off TINY bits (1/16 in or less) from the long end
> to pull the SWR down.  My final length for AO-40 uplink was right at 12
3/4
> inches.  I used a linear 11 element version with a barefoot FT-847 and got
> into the satellite fine.
>
> Good luck!
>
> Grant Zehr AA9LC
> ----- Original Message ----- 
> From: "David Carr" <dc@dcarr.org>
> To: <amsat-bb@AMSAT.Org>
> Sent: Saturday, March 06, 2004 12:34 PM
> Subject: [amsat-bb] Clarc yagis
>
>
> > I just finished construction on a WA5VJB 6 element 435Mhz beam.  I have
> > a question though about where to attach the coax.  I'm using a 1"
> > fiberglass tube as the beam and the geometric midpoint of the driven
> > element is currently in the middle (inside) of the hollow fiberglass
> > tube.  Is it okay to solder the coax connections on the outside of the
> > tube (.5" from the geometric midpoint)?  The pictures on the Clarc
> > website (http://clarc.org/Articles/uhf.htm) are ambiguous.
> >
> > 73s
> > David Carr
> > KD5QGR
> > ----
> > Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> > Not an AMSAT member? Join now to support the amateur satellite program!
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> >
>
>
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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