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Re: [TowerTalk] Static Drain Resistor in Arrestor

To: john@kk9a.com
Subject: Re: [TowerTalk] Static Drain Resistor in Arrestor
From: Jack Brindle via TowerTalk <towertalk@contesting.com>
Reply-to: Jack Brindle <jackbrindle@me.com>
Date: Tue, 16 Dec 2025 18:06:00 -0600
List-post: <mailto:towertalk@contesting.com>
Yes, it definitely helps with rain static. If W8JI actually stated that 
grounding the elements doesn’t help, he was wrong. 
It is important to bring both sides to ground, and together, usually through a 
large value resistor or RF Choke that will handle the power. Tieing both sides 
of a dipole through this to ground provides a path to bleed off the static 
charge, thus eliminating rain static (and snow static, etc). As Wes stated, 
adding a fairly large resistor across the dipole insulator really helps. Then 
timing that to ground through the arrestor finished the job.

73,
Jack, W6FB


> On Dec 16, 2025, at 5:48 PM, john@kk9a.com wrote:
> 
> Does the Morgan coaxal arrestor help with precipitation static or just the
> arc noise?  Rain static can be brutal when contesting.  I thought mine might
> be related to using OWA designs with insulated elements but W8JI has stated
> that grounded elements make little difference.
> 
> John KK9A
> 
> Ron WV4P wrote;
> 
> My fullsize 4el 40 with cool dry air wil arc several inches from coax tip
> to ground from static. With the Morgan M303 inline... Nothing. This was
> also very apparent on the SDR (Flex) screen from what looked like lightning
> static crashes to.. Nothing. In that respect, they did exactly what they
> claimed.
> 
> Ron, WV4P
> 
> 
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