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[TowerTalk] Balun/Choke power ratings

To: towertalk <towertalk@contesting.com>
Subject: [TowerTalk] Balun/Choke power ratings
From: Jim Lux <jimlux@earthlink.net>
Date: Mon, 28 Apr 2014 05:40:09 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
A recent post mentions various models of Balun or Choke with power ratings of, variously 3kW or 5kW.

How are those ratings derived?

Is it "run X power into a matched dummy load" and the thing doesn't overheat (by some TBD measure)?

Is it by computation from the breakdown voltage or current carrying capacity of the wires (probably without allowing for the thermal design of the package)?

Is it "I ran a Henry 5k through it at max power into my antenna and it seemed ok"?



And then
what would be a "real" objective power rating method? Seems that one of the key factors is the dissipation of whatever you're choking, although if the Z is high enough, maybe that's insignificant.

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