[Elecraft] K3: LPF, bass audio, new DSP board: Stirring the pot?

[James Sarte]

Jim,

This is the problem I've experienced, and why I think my receiver is
"noisy."  I can hear a high frequency whine or tone that only gets worse if
I adjust the receive EQ to enhance voice intelligibility.  This can
make working weak signals fatiguing.  I should probably just cough up the
money and swap out DSP boards for a new one with an LPF installed.  However,
I'm not too thrilled about the unannounced price increase from 69 to 89
dollars.  Had I known, I would have ordered one earlier.

73 de James K2QI

On Mon, Dec 28, 2009 at 11:50 PM, Jim Brown <jim at audiosystemsgroup.com>wrote:

>
> So yes, there ought to be user-definable high pass and low pass
> filters in the audio system. There ARE such filters in the IF,
> but not in the audio system. The result is that if gains are not
> well managed in the K3, some of our younger users could hear
> hiss. Since my highs are long gone, I can't comment on that. :)
>
> 73,
>
> Jim K9YC
>
>
>
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-- 
73 de James K2QI