[Elecraft] KPA500 Power Gain

[Johnny Siu]

Agreed and the sale of KPA3 and KPA100 will be maintained as well.

On the other hand, I would like to have stainless steel screws in KPA500 as a 
standard provision.  Summer in Hong Kong is very humid.  I have already changed 
all the screws in my K3 with SS so as to avoid rusting.
 cheers, 


Johnny VR2XMC 




________________________________
寄件人﹕ Jim Brown <jim at audiosystemsgroup.com>
收件人﹕ elecraft at mailman.qth.net
傳送日期﹕ 2011/3/17 (四) 2:58:08 AM
主題： [Elecraft] KPA500 Power Gain

On 3/16/2011 11:02 AM, David Cutter wrote:
> A European model will be required:

It might be NICE to be able to drive it at lower power, but I don't 
understand why it is REQUIRED.  It would be NICE to be able to drive it 
to rated power from a barefoot K3/10 (or K2/10), but that could push the 
driver to the point where it produces a bit more IM and THD (that is, 
splatter and harmonics). That's the main reason that firmware for the 
K3/100 now limits output power to 110 watts.

> we don't have the gain restriction you have, however, we do like stability and 
>putting lots of gain into one box could be tricky.

The Elecraft design engineers are quite sharp, and have carefully 
thought quite things like this. As a result of my own EE background and 
ongoing conversations with one of them who is a neighbor (and a serious 
contester), I'm firmly convinced that they have made a very intelligent 
set of design decisions about these issues. The last thing our ham bands 
need is more loud lids spewing trash.

73, Jim K9YC


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