[Elecraft] K3 dsp board upgrade for early radio

[Don Wilhelm]

Nick,

The little K3DSPLPF will take care of the high frequency part of the 
spectrum just the same as the DSP Board swap, BUT, it will not extend 
the low frequency response.

So, the answer depends on what you want to accomplish - if you want both 
the high and low frequency changes in your K3, then the DSP Board swap 
is the easiest way to accomplish that.

73,
Don W3FPR

On 12/5/2011 9:04 AM, Nick Thomas wrote:
> Hi Gents,
>
> I have an early K3 - serial # around 400. Do I need to swap the entire
> DSP board out for a Rev D board or is the little mod kit *"K3DSPLPF"
> *that is sold for $40 going to do it for me?
>