[Amps] New HF amplifier

[Carl]

----- Original Message ----- 
From: "Dennis OConnor" <ad4hk2004 at yahoo.com>
To: <amps at contesting.com>
Sent: Wednesday, August 04, 2010 8:21 PM
Subject: Re: [Amps] New HF amplifier


> "So you're saying Alpha, Ten-Tec, Jim W8ZR, Jerry K8RA and myself are all 
> wrong and their designs don't or wont work?"
>
> ummmm, very short and very blunt answer, yes...
>
> Longer, more nuanced answer, those designs will not work "optimally" 
> because of lost energy (heat) from the pumping of out of phase currents in 
> the toroid cores that have taps and unused turns - energy that should have 
> gone out the coax...
>
> For a proper design, go look at the Palstar HF2500DX... Each band has it's 
> own separate toroid, uncoupled from the turns on the unused cores, so that 
> there are no out of phase currents induced into the operating core...
>
> If my answer is over blunt, I apologize -  you asked the question and that 
> is my answer... I am not looking to get into a squabble with anyone...
>
> cheers
> denny / k8do


What is the power difference between this "optimized" design and the 
original HF-2500 with a tapped single toroid for 80/160 and a shorting 
switch?

Carl
KM1H