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[TowerTalk] TX RELAYS

To: <towertalk@contesting.com>
Subject: [TowerTalk] TX RELAYS
From: "David J. Sourdis" <hk1kxa@hotmail.com>
Date: Fri, 18 Jul 2008 07:55:37 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hello All,
 
I need advice on relays. What are the minimum parameters should I look for?
 
http://www.findernet.com/en/products/profiles.php?serie=46&lang=en
 
Would the relay in this link work to withstand 1500W or say 2000W to have a 
safety margin?
 
I have calculated the following, please correct me if wrong.
 
I= Square root ( Power/R) = SQRT(2000W/50 ohm) = 6,3 A. Based on this, 10A 
rating would stand up to 5KW = 50 ohm x 10A^2.
 
Voltage would be V= I x R = 6,3A x 50 ohm = 315 Volts.
 
I know it is not the same the ratings for 50 - 60 Hz as it is for 28 MHz...
 
I would appreciate any guidance on the subject.
 
73 David  HK1KXAEC5KXA
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