[Elecraft] K2 APF implementation?

[jeff martin]

Ron,
Great idea! I agree that the AF-1 would do the trick, but was hoping that something integrated into the existing K2 firmware/hardware could be implemented. If that doesn't pan out, I'll opt for the AF-1.

Jeff 

--- On Sun, 11/28/10, Ron D'Eau Claire <ron at cobi.biz> wrote:

> From: Ron D'Eau Claire <ron at cobi.biz>
> Subject: RE: [Elecraft] K2 APF implementation?
> To: "'jeff martin'" <n7krt_1 at yahoo.com>, elecraft at mailman.qth.net
> Date: Sunday, November 28, 2010, 8:19 PM
> Jeff, I have compared the K3's APF
> with the filter offered in Elecraft's
> AF-1 Active Filter mini-module kit. There is no difference
> I can hear in the
> performance. Actually the AF-1 has more flexibility since
> you have two
> levels of "Q" to choose from, variable gain, and an
> independent variable
> low-pass filter function. 
> 
> At $60, it's a great little filter.
> 
> For an old vacuum-tube jockey like me it's satisfying to
> see digital gear
> struggling to do something as well as analog circuits, Hi!
> I'll hand it to
> Lyle; he succeeded with the APF. It's darn near as good as
> the AF1.
> 
> Ron AC7AC
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]
> On Behalf Of jeff martin
> Sent: Sunday, November 28, 2010 6:37 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K2 APF implementation?
> 
> Any chance we might see an implementation of  APF for
> the audio-based DSP of
> the K2? I realize it might require swapping out U3 to
> implement the change.
> I would even give up some of the other functionality if
> adequate memory
> resources don't exist to implement an additional function.
> 
> Any interest?
> 
> Jeff
> N7KRT
> 
>