[AMRadio] Off topic - Antenna Question

Bernie Doran qedconsultants at embarqmail.com
Sun Sep 15 13:13:20 EDT 2013


Hi Brian: Just connect it to your tuner and pay no attention to any sort of 
matching stubs or baluns  or other junk.  Baluns are never intended to be 
used for anything except to match non reactive loads of a fixed rations. 
they are misused all the time.  It is possible that you might get a feed 
line length that makes a low Z load at the tuner and is hard for the tuner 
to go that low, but unlikely.  I assume you have taps along the fat coil. 
That will make a rather narrow pattern and with that length will likely have 
a lot of sag in the middle holding up the feed line unless you have three 
supports.   I use a full wave fed at a current node here and it loads easly 
on all bands.  ( Johnson KW match box)   Bernie W8RPW.----- Original 
Message ----- 
From: "W5AMI" <ars.w5ami at gmail.com>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Sunday, September 15, 2013 11:35 AM
Subject: [AMRadio] Off topic - Antenna Question


> My antenna finally went down with the help of my 200+ lbs great dane.  I
> have used a simple 1/2 wave dipole for years fed with ladder line.
>
> I want to build a 1 1/4 wave (some refer to it as a Double extended Zepp)
> for 80 meters.  Question I have is that most the designs I see are using a
> stub of ladder line into a 4:1 balun.  I have a very large home brew link
> coupled (balanced) tuner.  The coil came out of an old BC transmitter. 
> Can
> I not simply run a proper length of ladder line directly to my tuner from
> the antenna?  I don't want to use ferrite baluns in any of my antenna
> systems.
>
> Thanks & 73
> Brian / w5ami
>
>
> -- 
> "Who feeds a hungry animal feeds his own soul" - Charles Chaplin
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