Posted by
John W2XS on
Dec 02, 2006; 1:57pm
URL: http://elecraft.85.s1.nabble.com/An-Antenna-for-the-BL2-Balun-tp441449.html
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
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help:
http://mailman.qth.net/subscribers.htmElecraft web page:
http://www.elecraft.com