Re: KPA-500 Features and Pricing

Posted by ab2tc on Sep 09, 2010; 9:49pm
URL: http://elecraft.85.s1.nabble.com/KPA-500-Features-and-Pricing-tp5515492p5516297.html

Hi,

I am still moderately interested in this amplifer. The decision to go with a linear and perhaps even unregulated power supply built into this amplifier is a major disappointment to me. I can understand the decision from an engineering standpoint - nobody wants to to design a high power switcher - unless that is your sole line of business and expertise. Did Elecraft research the option of buying an OEM switch mode power supply? Could it conceivably be an option to offer the amp without a power supply and I will source my own? The added weight, inefficiency and from Elecraft's own writings cost associated with a linear power supply really bothers me. Switchers can and are made quiet these days.

AB2TC - Knut

Andy Wood wrote

Hi Bob,

Thanks for the quick reply.

How do you think this unit would perform if powered from a smallish petrol generator, when the input voltage/frequency would vary quite a bit as the generator load varied with cw or ssb operation? The unregulated 60v supply for the PA devices is obviously my concern.

Andy  VK4KY