Well, bummer! EZNEC4+ won't model a conductor 52,800 feet long. :-(
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 1/12/2018 11:34 AM, Cady, Fred wrote:
I wintered over at Byrd Station in 67-68. The "Long Wire" VLF station was, as I
remember, about 11 miles away from the main Byrd station to get away from noise sources for the
research that was being done. Several of us at Byrd walked out there one day (although I guess it
was night, seeing as how nights were 4 months long). I'm pretty sure the 10 mile antenna was for
receiving but KC4AAD might have used it for transmitting. My own station, KC4USM, used a 700' long
vee beam, on the ice. "Ground" was something like 7000' below, 2000' below sea level.
Cheers and 73,
Fred KE7X OAE
________________________________
From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> on behalf
of brian <als...@comcast.net>
Sent: Friday, January 12, 2018 9:35 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Long wire antennas MORE
Just for kicks, I modeled it with a 1/4 wave counter poise up 12' up
from ground. 14 MHz.
Unfortunately where ground is a question. What the parameters for
"ground" is a good question. Snow doesn't look like earth.
Anyhow the impedance came out 11470 ohms +j 17880.
The horizontal antenna pattern was along the axis with a beam width of
3.8 degrees and a gain of almost 15 db
The vertical pattern peaked at 3 degrees and straight up 5 dB down.
73 de Brian/K3KO
On 1/12/2018 16:18 PM, Mal Speer wrote:
I don't know much about antennas, but in the late 60s or early 70s I worked
a station on 20 meters with a 10 mile long (long wire antenna).
That was KC4AAD in Antarctica. I don't have the QSL card I got back then,
but was a picture of part of the antenna. I know it was 20 meters, because I
only had a 20 meter antenna. A 3El wide spaced monobander up about 35 feet.
Mal WA2TWA
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