Re: [Amps] New Alpha 8410 photos + Video

["GEORGE WALLNER" <aa7jv@atlanticbb.net>]

>> On Tue, 8 Mar 2011 13:33:03 -0500, "Paul Christensen" 
>><w9ac@arrl.net>
>> wrote:
>>I've never understood why an ATU needs a cooling fan.

Paul,

A cooling fan is very useful in a high power antenna 
tuner, where heating generally occurs on one component 
(usually the inductor). The fan moves the air around 
preventing the development of hot-spots. You don't need 
much of the fan to double the power handling capacity of a 
reasonably built tuner.

73, George, AA7JV
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