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

[juergen]

Hi

How good is the IMD performance of the new radio?

It would be ideal for driving a Tetrode in AB1 passive grid with low drive.
The poor IMD performance of many small radios has stopped me from doing this in the past.  The FT817 is an example. 

What RF devices will the new radio and the PA use?

A well engineered portable radio is a welcome addition to the market place.

Will there be a kit to convert it to a manpack radio?


The mind boggles at all the possibilities!

73
John





--- On Wed, 5/18/11, Wayne Burdick <n6kr at elecraft.com> wrote:

> From: Wayne Burdick <n6kr at elecraft.com>
> Subject: Re: [Elecraft] [Elecraft_K3] Re: Something *really* new at Dayton from Elecraft
> To: Elecraft_K3 at yahoogroups.com
> Cc: elecraft at yahoogroups.com, "'Elecraft Reflector'" <elecraft at mailman.qth.net>
> Date: Wednesday, May 18, 2011, 11:51 PM
> > 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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