Re: [Elecraft_K3] Re: Something *really* new at Dayton from Elecraft

Posted by wayne burdick on May 19, 2011; 6:51am
URL: http://elecraft.85.s1.nabble.com/Something-really-new-at-Dayton-from-Elecraft-tp6380523p6380857.html

> More $$$ or less $$$ that the regular K3?
>
Much less.

> Dual output impedance 5w/10w pa?   I don’t understand.
>
The MOSFET 10-W amp stage includes an output transformer with both 1:4  
and 1:1 windings. When using low power, or when running from internal  
batteries, the 1:1 winding is used, which optimizes efficiency at  
about 5 W, greatly reducing transmit current drain. The 1:4 winding is  
used when running higher power (using an external supply).

> One email said 10w/100w models. Is that correct?
>
The 1.5-pound radio itself puts out 10 watts+. We'll also be  
describing a new, high-performance 100-watt+ companion amplifier/ATU  
for fixed-station/mobile use. It will work very well with other 5 to  
10-W radios besides the KX3.

Wayne
N6KR

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