[Elecraft] Question K3 ALC w/SPE Expert 1.3K-FA amp

[Jim Brown]

I look at the state of the art, which is currently represented by Elecraft.

On Fri,4/3/2015 8:48 PM, Guy Olinger K2AV wrote:
> I look at plus and minus 250 Hz. That's because any wider than that is 
> in the passband of someone up or down. AND, particularly since K3's, 
> people are starting to squeeze toward three operating spots in a kHz, 
> rather than two. Happens all the time. That's plus and minus 167 Hz. 
> That matches the "250" 8 pole roofer that is really 330.

My K3 driving a KPA-500 to 550W or Ten Tec Titan to 1500W is 420 Hz at 
-50dBC, 610 Hz wide at -60 dBC, as measured on my other K3 with SVGA. 
:)   And that's with the original synth boards in both radios.  New ones 
on order. :)

This file is a work in progress. k9yc.com/P3_Spectrum_Measurements.pdf

73, Jim K9YC