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Re: [TowerTalk] Where to get LMR 400

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Where to get LMR 400
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 3 Nov 2020 10:46:04 -0800
List-post: <mailto:towertalk@contesting.com>
On 11/3/2020 9:39 AM, jimlux wrote:
But at 50 MHz, it kind of looks like about 59 mW/ft (because the resistance is 1.2 ohms/100ft)

Remember to take duty cycle, ambient temperatures, and the coax exposure to free air into account when considering dissipation limits. Duty cycle strongly depends on transmission modes and operating style. Rag chewing with keydown modes like RTTY or FM are more demanding than RTTY contesting or WSJT modes; CW less so, and SSB even less.

73, Jim K9YC


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