Re: An Antenna for the BL2 Balun

Posted by Leigh L. Klotz Jr WA5ZNU on Dec 02, 2006; 6:17pm
URL: http://elecraft.85.s1.nabble.com/An-Antenna-for-the-BL2-Balun-tp441449p441452.html

John,
I put up one of these for my father N5LK, up 25' in the center and 30'
on one end.  I dint use the specified length of ladder line, just 450
ohm window line of a convenient length.  His K1 tuned it a little
roughly on 17m but it works FB there anyway.  If I had had more time I
would have changed the feedline length.  I used a 1:1 balun, the BL1.

 From his QTH in MS I worked K1ZZ Dave, and then a station near my house
in California on 20m.  Once I got back, we had no trouble working each
other on 40, 30, or 17m.
73,
Leigh/WA5ZNU
On Sat, 2 Dec 2006 5:58 am, John Meade wrote:

> I was reading the ARRL's "Wire Antenna Classics" and noticed an
> interesting antenna (not that all of them aren't interesting hi hi).  
> This was an article by G0FAH called "Four Bands, Off Center" (p 1-13,
> also from QST, Feb 1996).
>
> It is a 69-foot antenna with the feedpoint 23 feet from one side and 46
> feet from the other.  From the antenna to the balun is either 55 or 111
> feet of 450-ohm line, or, 50 or 110 feet of 300-ohm line.  From the
> balun to the rig is any length of 50-ohm coax.
>
> For 40, 20, and 10 meters, the balun is 4:1.  For 15 meters, the balun
> is 1:1.  According to the article, no tuner is needed.
>
> Since the BL2 has a switch for 4:1 or 1:1, this may be an application
> without an antenna tuner.
>
> There is no mention of 30m, so that is an unknown. Another unknown
> might be the matching with respect to height above ground.
>
> By the way, I bought a blank BL2 PC board and switch from Elecraft and
> made my BL1 into a switchable 4:1 or 1:1 balun.
>
> 72,
>
> John W2XS
> K2 #1116
> KX1 #15

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