[Elecraft] Camping radio ops: then and now

[Matt Maguire]

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 <wunder at wunderwood.org>
Sent: Thursday, October 6, 2016 1:09 pm
Subject: Re: [Elecraft] Camping radio ops: then and now
To: Elecraft Reflector <elecraft at mailman.qth.net>, Matt Maguire <matt.vk2rq at 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.vk2rq at 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" <wunder at 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> > ______________________________________________________________> Elecraft mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:Elecraft at mailman.qth.net> > This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html> Message delivered to wunder at wunderwood.org______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Elecraft at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to matt.vk2rq at gmail.com