Antennaware
[Top] [All Lists]

[Antennaware] Phased Verticals

To: antennaware@contesting.com
Subject: [Antennaware] Phased Verticals
From: Brad Smith <decaturbrad@yahoo.com>
Date: Thu, 27 Sep 2007 09:14:18 -0700 (PDT)
List-post: <mailto:antennaware@contesting.com>
Since COMTEK is back-ordered at this time, I'm trying to phase two 75 meter 
verticals using the old coax trick. When fed directly with 50m coax, each 
antenna resonates at 3.8mHz fine, with good SWR.  However, when I add the 
quarter-wave matching section, I can't get the SWR down to a low level below 
2:1 above 3.6mHz, despite how much I shorten the verticals.  The phasing line 
is made of 50 Ohm coax cut  to the followng formula:
   
  246/3.8=64.7 x .66 (VF)=42.7 feet.
   
  What am I doing wrong?
   
  73,
  Brad

       
---------------------------------
Looking for a deal? Find great prices on flights and hotels with Yahoo! 
FareChase.
_______________________________________________
Antennaware mailing list
Antennaware@contesting.com
http://lists.contesting.com/mailman/listinfo/antennaware

<Prev in Thread] Current Thread [Next in Thread>