The block diagram you linked to is for hardware only; it is not a software
functional block diagram.
If you are interested specifically in the noise reduction, the source code for
the K2's NR is open source. I imagine Lyle would have adopted a similar sort of
approach for KX3/K3.
73, Matt VK2RQ
_____________________________
From: Walter Underwood <wun...@wunderwood.org>
Sent: Thursday, October 6, 2016 1:09 pm
Subject: Re: [Elecraft] Camping radio ops: then and now
To: Elecraft Reflector <elecraft@mailman.qth.net>, Matt Maguire
<matt.vk...@gmail.com>
I was writing software for radios in 1981. Diagrams might help understanding,
but the source code is the equivalent to a schematic. We already have a block
diagram for the KX3 and people keep complaining.
http://www.elecraft.com/manual/KX3%20Manual%20Block%20Diagram.pdf
I’m still pretty danged curious about the noise reduction. I think it is based
on a Kalman filter with the “known signal” input generated from a
lowpass-filtered or averaged version of the input. But I won’t figure that out
from the block diagram. So, not useful to me.
wunder
K6WRUWalter Underwood
CM87wjhttp://observer.wunderwood.org/ (my blog)
On Oct 5, 2016, at 6:20 PM, Matt Maguire <matt.vk...@gmail.com> wrote:
Source code is too low level to get a conceptual understanding of what the
software is doing -- a software architecture diagram is likely to be more
useful for that. (in a similar way, for hardware a schematic diagram abstracts
out implementation details such as PCB layout and track routing to make it
clearer how the circuit works at a conceptual level).
73, Matt VK2RQ
On Thu, Oct 6, 2016 at 11:59 AM +1100, "Walter Underwood"
<wun...@wunderwood.org> wrote:
These days, the source code matters as much as the schematic. Want to find the
Weaver SSB demodulator? That is in software.wunderK6WRUWalter
UnderwoodCM87wjhttp://observer.wunderwood.org/ (my blog)> On Oct 5, 2016, at
5:43 PM, Phil Wheeler wrote:> > Why "But the KX2 has no schematics for the
customer, so that prevents my purchase.", Mike? Mine works just fine, without
schematics.> > Phil W7OX> > On 10/5/16 5:37 PM, Mike Morrow wrote:>> Around
1960 to 1962, on my family's tent camping trips to remote locations in the
Arkansas Ozarks, I would help my dad set up his Drake 2-A receiver, Multi-Elmac
AF-67 AM transmitter, and 80m dipole in the trees. Power was from a military
surplus 120 vac 300 watt generator (run only if no body was camped nearby).>>
>> When I got out of the Navy 37 years ago, I immediately returned to Arkansas
campsite ham ops with the new TS-120S, MFJ tuner, and deep-discharge battery.
(Most of the areas my family had camped years earlier had become the Buffalo
National River. I return there every Fall that circumstances allow.) This
type of ham operations will always be my favorite use of radio.>> >> My
now-defunct K1 had been my principal camp rig since 2001. I'd like to replace
it with a KX2 immediately. But the KX2 has no schematics for the customer, so
that prevents my purchase.>> >> Mike / KK5F> >
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