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Re: [TowerTalk] Feedline (choke) question

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] Feedline (choke) question
From: john simmons <jasimmons@pinewooddata.com>
Date: Thu, 2 Oct 2025 22:14:49 +0000
List-post: <mailto:towertalk@contesting.com>
One ham manufacturer uses the term "100% ICAS duty". I call BS.

73
-de "Curly" John NI0K
QRZ.com<https://www.qrz.com/db/ni0k>
Hams Over IP<https://hamsoverip.com/> call me: 101468

On 10/2/2025 2:38 PM, Jim Brown wrote:
On 10/2/2025 10:47 AM, Steve Harrison wrote:
That was not the issue: the real issue was the thermal expansion and 
contraction of the connectors causing the connectors to loosen over time. We 
are talking about connectors that passed a kilowatt at 450 MHz heating up, then 
cooling off suddenly as they were near or within the cool air-conditioned 
stream from the rack's environmental systems.

Thanks for the detailed rundown, Steve. Very interesting. And, of course, the 
difference between CCS and ICAS is always a factor.

73, Jim K9YC

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