[Milsurplus] Milsurplus Digest, Vol 250, Issue 38

Brooke brooke at pacific.net
Wed Feb 26 14:39:34 EST 2025


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
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"  <hwhall at compuserve.com>
> To:"milsurplus at mailman.qth.net"  <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>
> 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

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