PSKMail uses PSK125 ot PSK63 so it does not use ARQ.
Pskmail uses arq on top of psk125.
Rein PA0R
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Hello Rick.
First of all, I would like to comment on FEC and S/N.
Look at the article from G3RUH
http://www.amsat.org/amsat/articles/g3ruh/105.html
The graph
http://www.amsat.org/amsat/articles/g3ruh/105/fig01.gif
explains a lot. FEC gives you an extra coding gain, only
if the raw signal S/N is
I guess I need to learn what an unfished CD is
Andy K3UK
www.obriensweb.com
(QSL via N2RJ)
On 9/11/07, Rein Couperus [EMAIL PROTECTED] wrote:
The key is that you need a CD which is 'unfinished'. I have not tried this,
but you could take a look at the puppy linux wiki. They claim you can even
As mentioned in this forum earlier in the week by Simon, DM780 testing
has progressed to the point that a new public release is expected
soon, possible by this weekend. Digital mode enthusiasts may want to
check the Ham Radio Deluxe web site check for the new version.
DM780 has PSK31-63--125,
Since the public release is due out soon, hopefully Simon will be OK
in me providing a preview screen shot, check it at
http://www.obriensweb.com/dm780,jpg http://www.obriensweb.com/dm780,jpg
This screen shot shows a CW
Andrew O'Brien wrote:
As mentioned in this forum earlier in the week by Simon, DM780 testing
has progressed to the point that a new public release is expected
soon, possible by this weekend. Digital mode enthusiasts may want to
check the Ham Radio Deluxe web site check for the new version.
Thanks John, I must have a type in there,
http://www.obriensweb.com/dm780.jpg works
On 9/11/07, John Lindsay [EMAIL PROTECTED] wrote:
--
Since the public release is due out soon, hopefully Simon will be OK
in me providing a
- Original Message -
From: Andrew O'Brien [EMAIL PROTECTED]
Olivia may also be added in the near future.
With luck this evening - receives OK, sends garbage :-(
JT65A in the distant future.
Planned for November.
Various older screenshots:
I guess the manual of your burner software will be able to tell you.
Look at burning a data disk.
The idea is to keep the disk open for adding stuff later. Most burning software
defaults to closing the CD after write, and you cannot add stuff afterwards.
But there are enough acceptions. Nero
Hi: I think that`s very simple, the mode decline because nobody try to use
it.
I usually qap around 1900 z in 14105 and when a station call i can see him
always 599, sometimes i made the qso, sometimes not, but in psk i had to
beam my antennas every moment and in olivia not.
So i propose that
Hi John,
I am a big proponent of developing cross-platform
applications. That does not seem to be a very
popular approach these days.
If you happen to own a TS-2000 there is a program
here: http://www.qsl.net/wb5kia/arcs/arcslite.htm
that runs very well under Wine and does very
well with CAT.
- Original Message -
From: Howard Brown
We need more cross-platform development and less proprietary work.
Much, much easier said than done. Most developers are one-man bands devoting
all available free time to software.
When your program becomes popular the support effort becomes
Hi Simon,
I don't know the choices you made or why you
made them. I certainly recognize that your software
is excellent work.
I do know that in software development there are
some choices that can be made that make cross-
platform development possible. Been there,
done that (in business
Vojtech,
That is what is state of the art in the bag of tricks.
Pactor uses convolutional encoding with Viterbi decoding, which allows
maximum likelyhood detection. Which means that the decoder knows,
taking into account the history of the stream what symbols are likely to
come next, instead
A disk that accepts more data.
In Nero terms, you can leave a CD closed (will not accept further
data) or open.
Usually, music CD's are closed. Open disks are mainly used for data, as
music readers will get confused with such a disk.
Jose, CO2JA
-=
Andrew O'Brien wrote:
I guess I need to
Hi Jose,
Do you see any difference between the convolutional code of Pactor and
the Viterbi code in MFSK16 or Patrick's use of Viterbi code in his F
versions of PSK and his FEC of DEX?
The extra thing that SCS developed early with Pactor 1 was the ability
to create a correct frame from
Hello Rick,
All the FEC appears to be roughly the same Viterbi encoding/decoding in
Multipsk but perhaps there are some differences?
No the Viterbi encoding of QPSK31 is smaller so a bit less powerful that the
one used for MFSK16/MFSK8/PSK63F/PSK220F, this group of modes using the same
Viterbi
Hi Patrick.
I was astonished (and a bit disappointed) not to find more that one
dB. I think it's due to the particular IFK modulation: when you do one
error on a symbol, the following symbol will be also in error (as in
PSK31). So it's a bit more complicated for the Viterbi decoder to find
the
Hello Vojtech,
I use a soft decoder in all cases (QPSK31, MFSK, PSKxyF, DominoEX), the level
being normalized from -100 to 100 (200 points being widely sufficient).
I have not compared with an hard decoder (2 points instead of 200), but i doubt
that the gain be much (perhaps 1 dB) .
So it's
but when burning an ISO image, I am not given this option.
On 9/11/07, Jose A. Amador [EMAIL PROTECTED] wrote:
A disk that accepts more data.
In Nero terms, you can leave a CD closed (will not accept further
data) or open.
Usually, music CD's are closed. Open disks are mainly used for
Rein means an UNFINALISED CD Andy.
Most CD/DVD authoring software ( Nero, Roxio, VOB etc ) provides the option
of finalising or not.
If you finalise, no further data can be written unless you either unfinalise
or format a CD/DVD-RW disc.
If you finalise a non-RW disc then you've had it, no
Diolch, Paul.
Andrew O'Brien wrote:
but when burning an ISO image, I am not given this option.
Seems it is OK, I did realize it quickly enough. An ISO is an already
closed bundle. So, it would take some extra work to open the ISO in a
hard drive and burn the components as separate files. That could
Rick wrote:
Hi Jose,
Do you see any difference between the convolutional code of Pactor and
the Viterbi code in MFSK16 or Patrick's use of Viterbi code in his F
versions of PSK and his FEC of DEX?
I have not studied those in detail. And I know about Viterbi DECODER,
but, would a Viterbi
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