[South Florida DX Association] Retry: Wire antenna advice
Warren Rothberg
w4wr at bellsouth.net
Wed May 14 17:17:48 EDT 2008
Thanks for your response Mike. For the rest of you, here is a retry on the
ascii diagram.
-----Original Message-----
From: Michael Ryan
Warren, ( Mr. Phelps here...) [snip]
-----Original Message-----
From: fcg-bounces at kkn.net [mailto:fcg-bounces at kkn.net] On Behalf Of Warren
Rothberg
Sent: Wednesday, May 14, 2008 2:56 PM
To: 'Florida Contest Group'; SFDXA
Good afternoon, Mr. Phelps. Your mission (oops, wrong forum). [snip]
| External -> Radio |
22 feet | Tuner | 22
feet
| ^
|
| |
|
------|--------------------------------
| 42 feet
^
|
Entry through 11 feet above
Window with ground on all
MFJ Pass-thru; three sides -
Accepts either total length
Ladder or Coax; avail: ~86 ft.
Locate feedpoint
here.
Distance from feedpoint to Radio=
25 feet
I was thinking in terms of an OCF (off center fed) wire (don't have enough
length to call it a Windom <g>). Height above ground is 11 feet on all 3
sides (my roof doesn't go any higher!). The outside walls are stucco on a
metal frame (16" joists). The antenna will mount about 6" down from the top
of the "side wall" and out about 12" on a standoff. I can feed it with
ladder line and a 4:1 balun (but the run is very short) or coax with a 1:1
balun. This is all theoretical (read only in my head). Does anyone have any
experience with this type of installation? Will the take off angle be near
vertical (NVIS)? The feedpoint side faces east with a north leg and a south
leg.
Thanks for any thoughts and/or suggestions.
-warren
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