[Milsurplus] Milsurplus Digest, Vol 250, Issue 38

[Hubert Miller]

The vertical part has the higher current flowing, but the horizontal does radiate. If you want the top not to radiate, offset it to a "T" shape.
-Hue Miller



Sent from my Galaxy


-------- Original message --------
From: Brooke via Milsurplus <milsurplus at mailman.qth.net>
Date: 2/26/25 11:41 (GMT-08:00)
To: milsurplus at mailman.qth.net
Subject: Re: [Milsurplus] Milsurplus Digest, Vol 250, Issue 38

Hi Wayne:

It's my understanding that the Inverted-L is functionally a vertical with the horizontal wire acting as a top loading capacitor.
Art W6TYP (SK) used this antenna on 160 AM.

--
Have Fun,

Brooke Clarke
https://www.PRC68.com<https://www.prc68.com/>
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.


-------- Original Message --------

Date: Wed, 26 Feb 2025 06:02:14 +0000 (UTC)
From: "hwhall at aol.com"<mailto:hwhall at aol.com> <hwhall at compuserve.com><mailto:hwhall at compuserve.com>
To: "milsurplus at mailman.qth.net"<mailto:milsurplus at mailman.qth.net> <milsurplus at mailman.qth.net><mailto:milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] grc109 into coax fed 1/4 wave 40m vertical
Message-ID: <607136001.3975302.1740549734084 at mail.yahoo.com><mailto:607136001.3975302.1740549734084 at mail.yahoo.com>
Content-Type: text/plain; charset=UTF-8

Per the manual, the antenna is supposed to be an end-fed inverted-L of 100ft total length.? 100ft is just 30.48 meters.? About 3/4 wavelength on 40m band.? That should present a fairly high impedance compared to a properly tuned 1/4 vertical with groundplane.? Perhaps the tuneup procedure in the manual is incorrect for that kind of antenna?

Wayne
WB4OGM

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20250226/2e060850/attachment.html>