[mailto:[EMAIL PROTECTED]
Sent: Friday, September 08, 2006 7:46 AM
To: digitalradio@yahoogroups.com
Subject: RE: [digitalradio] ARQ sound card modes
--- DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
Jose,
Are there really more multi-path signals on 40M and
80M than 20M?
I've
: Friday, September 08, 2006 9:14 AM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] ARQ sound card modes
Very important information, Rein, and thank you for sharing it with the
group. This is the kind of real world information we need to hear.
Considering the enormous amount
--- DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
Jose,
I re-though the question and if 20M is near the MUF,
then there would likely be more multi-path signals
on 40 and 80. But I suppose that you need to define
what near the MUF is in terms for frequency or
percent.
.
Moreover the biggest channel killer is the Pactor 2/3 QRM, not QRN or noise.
73,
Rein PA0R
-Ursprüngliche Nachricht-
Von: digitalradio@yahoogroups.com
Gesendet: 08.09.06 03:53:18
An: digitalradio@yahoogroups.com
Betreff: Re: [digitalradio] ARQ sound card modes
Hola Jose,
I
--- DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
Jose,
Are there really more multi-path signals on 40M and
80M than 20M?
I've never looked at signals on 80/40/20 from that
aspect.
73,
Walt/K5YFW
Well, maybe I am blaming the butler, as in mistery
novels, and it is not
My measurements on 10 Mhz show that MT63 has 20% less errors than PSK63 on
the same channel.
The is not enough to offset the negative points.
Very interesting. It would seem that MT63 would better remain a broadcast
mode like Amtor Mode B or PACTOR FEC.
73,
Mark N5RFX
Need a Digital
--- KV9U [EMAIL PROTECTED] wrote:
Hola Jose,
I think that Paul, K9PS attempted to do this at one
time, but was not
able to finish it. He has developed ARQ criteria
that was the used to
help develop PSKmail. I thought that MT-63 could
handle multi-path quite
well, but I still prefer
Very important information, Rein, and thank you for sharing it with the
group. This is the kind of real world information we need to hear.
Considering the enormous amount of bandwidth MT-63 takes up, it would
have to work several times faster and better than a narrow band mode to
--- Patrick Lindecker [EMAIL PROTECTED] wrote:
Hello Rick,
TKS for info. Perhaps, next year I will see if it is
possible to carry a synchronous ARQ mode (perhaps
Pactor 1 forced to 100 bauds) in Multipsk, under a
big PC XP.
73
Patrick
I know that somebody I cannot remember is
, September 06, 2006 5:24 AM
Subject: Re: [digitalradio] ARQ sound card modes
The most current SCAMP Specification file was Revision Q, dated Feb 1,
2005. It is on the ScampProtocol yahoogroup. That group has been very
quiet for well over a year as we are waiting for Rick, KN6KB
Hello Rick,
RR for all!
Pax2 has a speed of 117 wpm for a useful speed of about 50 to 60 wpm in average
after the protocol management...
The timing of Windows/Linux is not so bad that you could not have a moderate
sized window.
Under Linux and DOS, I think a synchronous ARQ mode is possible,
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