[TowerTalk] A Capacitively Fed 102 Degree Vertical for 160Meters

[tedc at nucleus.com]

Jim,

Looking at the spacing on the 500 pfd. cap in the
SA2550 it should be plenty robust for most current
fed systems; however the breakdown voltage may not be
high enough for a voltage fed high Z system. My 102
degree system is current fed and I plsn to use
variables rated at 5 to 6 Kv. in any case. 

Ted VE6AMR


------- Original Message -------
>From    : Jim Brown[mailto:jim at audiosystemsgroup.com]
Sent    : 3/24/2015 12:09:24 PM
To      : towertalk at contesting.com
Cc      : 
Subject : RE: Re: [TowerTalk] A Capacitively Fed 102
Degree Vertical for 160Meters

 On Mon,3/23/2015 8:03 PM, Doug Smith wrote:
> I use an inverted L for 160 with an old Heathkit
SA2550 at the base of the
> vertical element.  The 2550 is an electrically
driven large variable
> capacitor, remotely tuned/turned from the shack.

I had one of those in my shack for a while -- it came
from the estate of 
a silent key, and I was helping his XYL sell his
stuff. It looked quite 
robust, so I thought I'd like it. Turned out that it
started arcing with 
high power on antenna that my Ten Tec 238 had no
problems with, so I 
sold it for her rather than buying it myself.

73, Jim K9YC
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