Topband
[Top] [All Lists]

TopBand: 160m shortened dipole

To: <topband@contesting.com>
Subject: TopBand: 160m shortened dipole
From: k6se@juno.com (Earl W Cunningham)
Date: Sat, 09 Aug 1997 14:45:11 EDT
Hello, Con,

  Using EZNEC, the following dimensions resonate at 1.830 mHz (at 80'
high):

                 78'                             6"                      
  78'
____________________________   ______________________________
                       ______________ |   |______________   <--  spacing
= 6"
                      |_______________    ______________|   <--  spacing
= 6"
                             47' 10"         o   o       47' 10"   

                            Z = 10.44 Ohms at 1.830 mHz

All wire is #14 gauge.

The feedpoint resistance at resonance is about 10.5 Ohms at 80', so
you'll have to devise some kind of matching system.  If perfectly matched
at 1830 kHz, the 2:1 swr bandwidth would be about 14 kHz (1824 to 1838
kHz).

The above dimensions and values are subject to change if the dipole is an
inverted vee.

73 es GL, de Earl, K6SE


--
FAQ on WWW:               http://www.contesting.com/topband.html
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com

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