[Elecraft] APF (audio peaking filter) on the K3/K3S/KX3

[F5vjc]

Strangely enough, I miss the wide open no filters receiver of my young SWL
days.
 Probably listening in a 5kHz bandwidth with a homebrew Q Multiplier for
selectivity.
 I somehow had a much better sense of band conditions, superseded now with
internet propagation tools.
 Today with DSP, NR, NB, and brick wall filters it's perhaps all too
clinical.
On my K3 I sometimes open up the filters to really listen to what's going
on around me.

Nostalgia?



73,  Deni - F5VJC



On 7 February 2016 at 20:51, Ron D'Eau Claire <ron at cobi.biz> wrote:

> Me too. Actually, I miss small variations we used to see regularly on the
> CW
> bands - slight chirp on some sigs, variations in keying by people using
> bugs
> and hand keys, etc. Gone are the days one could tune across the bands and
> recognize individual operators and their rigs after hearing just a few
> characters.
>
> All we have left is a little noise to create a listening "environment".
>
> Listening to keyers and keyboards on rigs with pristine keying
> characteristics is to me a lot like listening to a phone band filled with
> identical computer-generated "voices". (Stand by, that will come, Hi!)
>
> 73, Ron AC7AC
>
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
> F5vjc
> Sent: Sunday, February 7, 2016 4:56 AM
> To: Bill W4ZV
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] APF (audio peaking filter) on the K3/K3S/KX3
>
> Well actually I prefer copying CW with a certain amount of noise present.
>  Pure tone, no noise CW, as from a practice oscillator or an S9++ signal
> quickly becomes boring and I loose concentration(or something).
> It's perhaps why I prefer to dig out weak signals (ESP) from the noise on
> the band.
> However I do really appreciate the tools available in the K3 to do this :)
> APF works great if you really learn how to use it.
>
> Any one else?
>
>
> 73,  Deni - F5VJC
>
>
>