[Elecraft] NG7M / 2 Videos on FSK RTTY timings generated with EXTFSK/64 on new and older PC's via USB FTDI Com Ports

[M. George]

Joe, your 2010 data (which you haven't looked up and provided, but I assume
exists? from 8 years ago) isn't a good comparison to changes at the OS, CPU
/ hardware level between 2010 and 2018.  You are very good at telling
everyone the way things are, but not very good at showing folks the way
things are / work with actual experiments and data / video.

This exercise isn't productive until you actually watch all of my content
and start reproducing my results on a scope etc... If you are not willing
to do that in 2018 with your own equipment and continue to rely on
microHam's numbers from 2010... (or someone else's data) There is no point
to the discussion.  A lot has changed since 2010.  Plus I made it crystal
clear in my video that my main computer setup is much faster than most
other Ham shack computers at the moment (2018). You act like I expected
everyone to have the same setup... which clearly shows that you cherry
picked sections out of the video to confirm your preconceived conclusions
before every clicking on the video links.  You insist on leaving out all
the detail provided in the Video, because it can't be conveyed via a few
paragraphs of text in an email.

As usual, (which is well known), you will get the last word in... Until you
produce something new for 2018, a response from myself isn't productive at
all.  And will not take place.  For now I'll let my video speak to the
experiment and 2018 current state of what I recorded.  As I do other tests
and present other findings, I will be willing to change my
understanding/conjecture/opinion based on data collected and presented.

In the 2017 CQWWRTTY contest (using a 5 year old Ivy Bridge i7 Intel cpu)
with my K3S / internal FSK keyed by the same FTDI serial interface in my
video presented this last week, I'm shocked I was able to work 1285 QSO's
and 184 band countries.  My FSK generated signal on the other end of the
QSO's must have been horrible with this setup (jitter all over the place
I'm sure).

        Band     QSOs     Pts  ZN   Cty  SP   Pt/Q
         3.5      62      74    8    6   30   1.2
           7     338     599   27   58   50   1.8
          14     689    1519   31   84   50   2.2
          21     194     370   23   34   37   1.9
          28       2       4    2    2    1   2.0
       Total    1285    2566   91  184  168   2.0

            Score : 1,136,738

I look forward to your updated data and visuals / video using data gathered
from 2018.  That will be very interesting indeed.

73 de Max NG7M


>W4TV:
​Unfortunately, your first video is completely unrealistic as the vast
majority of amateurs uses computers significantly less powerful than
your lightly loaded (less than 40% CPU utilization by your own video)
six core, 3+ GHz CPU with the EXTFSK port on a dedicated motherboard
USB port with no loading from multiple (high priority) sound cards
(they are on a different USB Root Hub) and no contest level cluster
spots.

>From my customer support support experience, the typical amateur station
is a 2-2.4 GHz Core2Duo (two cores, 4 execution units) with 1 GB RAM and
all USB ports (typically 4) served by a single USB Root Hub.  The system
typically runs a logging program that polls one or two transceivers for
eight parameters every 50 to 100 msec along with one or two 96 or 192
KHz sample rate USB sound cards for a software panadapter (or
equivalent USB I/Q SDR receivers) and another 16 bit, 48 KHz sample
rate USB sound card for digital operation.  In addition, those systems
are connected to a DXCluster node with CW/RTTY Skimmer providing a
net spot flow of > 100 spots per minute.

I've provided jitter data as measured by microHAM in 2010 multiple times
on the RTTY list ... and that data has been verified by JA7UDE (author
of EXTFSK an ETFSK64) who also confirms the added jitter when the USB
system (single USB Root Hub) is loaded with heavy data transfer.  Oba's
results have also been reported on the RTTY list and are available on
his EXTFSK64 page.

73,
​

-- 
M. George