[TowerTalk] TowerTalk Digest, Vol 275, Issue 2

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Sent: Sunday, November 2, 2025 12:00 PM
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Subject: TowerTalk Digest, Vol 275, Issue 2

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Today's Topics:

   1. Re: SuperBerth.com 15m yagi manual / info, (Brian Beezley)
   2. Re: Raised Radial Spacing (Rob Atkinson)


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Message: 1
Date: Sat, 1 Nov 2025 09:54:40 -0700
From: Brian Beezley <k6sti at att.net>
To: "towertalk at contesting.com" <towertalk at contesting.com>
Subject: Re: [TowerTalk] SuperBerth.com 15m yagi manual / info,
Message-ID: <6987bd71-f586-49e3-a42e-270fec58bb33 at att.net>
Content-Type: text/plain; charset=UTF-8; format=flowed

George, if you're willing to modify the DE mounting, this writeup shows how
to overcome the gain degradation all OWA designs exhibit:

https://k6sti.neocities.org/owa

The designs shown are examples. If you have an automatic optimizer, it is
easy to design a Yagi to accommodate the number of elements and boom length
you want. Trade gain for pattern for SWR according to your needs.

Brian



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Message: 2
Date: Sun, 2 Nov 2025 06:39:32 -0600
From: Rob Atkinson <ranchorobbo at gmail.com>
To: towertalk <towertalk at contesting.com>
Subject: Re: [TowerTalk] Raised Radial Spacing
Message-ID:
	<CALWD7Z53iTYc49O-MfRzHGpMk8wcgwsDCPKDoyXNbW1s4tGttQ at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

Over the past 10 years the price of copper per pound has gone from around $2
to over $5 on the London Metals Exchange.  The supply and demand are driving
this as copper gets squeezed by mining problems and demand from the power
industry and the construction of AI computing facilities.  The end result
for hams is that the standard ground system is becoming financially out of
reach for the average casual operator on the low bands.  Even a 160 meter
half wave dipole is getting pricey and a cage dipole?  Forget it.  I used to
give hams some flack for being stingy on the number of radials they deploy
because the barrier used to just be laziness, but now a decent ground system
costs serious money, especially on 160 m.  Cost saving measures such as
elevated radials deserve consideration.

73

Rob
K5UJ



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End of TowerTalk Digest, Vol 275, Issue 2
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