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Re: [Amps] Tuner Loss

To: "Paul Christensen" <w9ac@arrl.net>, <amps@contesting.com>
Subject: Re: [Amps] Tuner Loss
From: "Jim W7RY" <w7ry@inbox.com>
Reply-to: Jim W7RY <w7ry@inbox.com>
Date: Thu, 10 Mar 2011 09:46:44 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Or you're running it on RTTY.

73
Jim W7RY


--------------------------------------------------
From: "Paul Christensen" <w9ac@arrl.net>
Sent: Wednesday, March 09, 2011 9:17 AM
To: <amps@contesting.com>
Subject: [Amps] Tuner Loss

>> All tuners have losses. Losses create heat. You can't change physics.
>
> But you can do a reasonably good job of avoiding the problems associated
> with physics if the underlying physics is understood.  All tuners have 
> loss.
> Some designs have less loss than others.  A well-built ATU that can
> accommodate 1KW of power across a generous range of load impedances does 
> not
> require a cooling fan.  If an ATU product uses a cooling fan, it's time to
> start asking tough questions of the manufacturer.
>
> Paul, W9AC
>
>
>
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