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Re: [TowerTalk] Capacitor Value for a 160m T antenna

To: "'Towertalk'" <towertalk@contesting.com>
Subject: Re: [TowerTalk] Capacitor Value for a 160m T antenna
From: "Paul Christensen" <w9ac@arrl.net>
Date: Mon, 7 Nov 2016 14:22:58 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
P.S.

Unless you really need a flat 1.1 SWR, then just use series C of 628 pF
(1825 kHz).  That eliminates the L.  However, adding in L, or at least
accommodating it in your layout does help if you plan on spanning the whole
160m band. 

Paul

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Richard Thorne
Sent: Monday, November 7, 2016 12:48 PM
To: Towertalk <towertalk@contesting.com>
Subject: [TowerTalk] Capacitor Value for a 160m T antenna

I'm going to build a T antenna for 160 in a few weeks.

I need a capacitor to tune out z = 41.2 + j139.

For the educational experience, how do I calculate a cap for the above
equation?  I'm going to try and track down a variable cap for the above so I
can build the antenna over the Thanksgiving holiday.

Thanks

Rich - N5ZC

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