[Elecraft] K2 APF implementation?

[Ken Alexander]

When you consider that the K2's buttons have two and sometimes three  different functions already (there's a clock in there?  Really?) I would prefer to have an outboard audio filter like the AF-1.  Plus you need a knob or two and I don't think it would be very easy to retrofit extra knob functions into the existing radio.

I'd like one too, but I don't think it's practical in the K2.  Maybe in the K2.1!   8-)

73,

Ken Alexander
VE3HLS



--- On Mon, 11/29/10, jeff martin <n7krt_1 at yahoo.com> wrote:

> From: jeff martin <n7krt_1 at yahoo.com>
> Subject: Re: [Elecraft] K2 APF implementation?
> To: elecraft at mailman.qth.net, "Ron D'Eau Claire" <ron at cobi.biz>
> Date: Monday, November 29, 2010, 8:47 AM
> 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
> > 
> > 
> 
> 
>       
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