See my comments inserted...
Walt/K5YFW
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 23, 2006 4:54 PM
To: digitalradio@yahoogroups.com
Subject: RE: [digitalradio] Re: PC-ALE Signal Detect Before
Transmitting: An Experiment
### My comments below... Walt/K5YFW
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 23, 2006 5:31 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
AA6YQ
@yahoogroups.com
Subject: RE: [digitalradio] Re: PC-ALE Signal Detect Before
Transmitting: An Experiment
See my comments inserted...
Walt/K5YFW
-Original Message-
From: digitalradio@ mailto:digitalradio%40yahoogroups.com
yahoogroups.com [mailto:digitalradio@
mailto:digitalradio
*** new AA6YQ comments below
--- In digitalradio@yahoogroups.com, DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
snip
Walt, what would make an HF-based system constucted by amateurs
invulnerable to cyber-attack?
### If you are NOT connected to the Internet and don't use 100%
$$$ Comments to comments Hi Hi.
Walt/K5YFW
[EMAIL PROTECTED]
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Thursday, August 24, 2006 12:06 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting
: Thursday, August 24, 2006 12:06 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before
Transmitting: An
Experiment
*** new AA6YQ comments below
--- In digitalradio@yahoogroups.com, DuBose Walt Civ AETC
CONS/LGCA
walt.dubose@ wrote:
snip
Walt
:[EMAIL PROTECTED]
Sent: Thursday, August 24, 2006 2:13 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
I understand that your proposed HF system would be entirely
independent of the internet, Walt. My points are
1. If we
AA6YQ comments
--- In digitalradio@yahoogroups.com, DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
BTW Dave...if I come up to your neck of the woods, I'll take you out
to some place that you can recommend that serves good crab cakes, New
England Clam Chowder and lobster.
You're on,
purpose in society.
73,
Walt/K5YFW
-Original Message-
From: digitalradio@yahoogroups.com
[mailto:[EMAIL PROTECTED]
Sent: Monday, August 21, 2006 10:36 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Re: PC-ALE Signal Detect Before
Transmitting: An Experiment
: [digitalradio] Re: PC-ALE Signal Detect Before
Transmitting: An Experiment
Hopefully, there will be a shift toward more open software which
would
be more in line with amateur radio tradition.
The Winlink 2000 folks keep everything proprietary up to this
point.
That even includes
Hi Dave,
I might point out that the Winlink system is a total HF solution and
operated for many years. The owners of the system felt that this system
was too slow and wanted a system that would operate primarily with
e-mail connectivity. This developed into Winlink 2000 and removed much
of
Hi Dave,
At 01:59 PM 8/23/2006, you wrote:
Re: The technical world, and especially amateur radio should rise
above that in concerted efforts to accomplish desired common goals.
Amend to that !
A prerequisite for concerted action is to clearly state the goal, and
to have that goal make sense.
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 23, 2006 12:59 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
[stuff deleted]
...The question is not could
I agree that an application that convey can convey email to the
internet via HF would be handy during emergencies or other
disruptions, and during portable operation (though 3G cellular and
WiMax are beginning to reduce the need for the latter). Enabling it
exploit a direct internet connection
Oh, I see, Steve. You believe that the internet is insufficiently
reliable, despite the multi-billion dollar investments by telecom
companies and suppliers, governments, and research institutions. Thus
there's an opportunity for amateurs to build a more reliable means of
conveying email thats
--- In digitalradio@yahoogroups.com, DuBose Walt Civ AETC CONS/LGCA
[EMAIL PROTECTED] wrote:
-Original Message-
From: digitalradio@yahoogroups.com
[mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 23, 2006 12:59 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 23, 2006 3:57 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
Oh, I see, Steve. You believe that the internet
, August 23, 2006 3:57 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
Oh, I see, Steve. You believe that the internet is insufficiently
reliable, despite the multi-billion dollar investments by telecom
companies and suppliers
: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
Walt, you're going to have to do MUCH better than that if you want
motivate concerted action.
The fact that we CAN do something is irrelevant; the question is
whether we SHOULD. Answering this question generally involves
Yes, there's opportunity to use digital radio to augment current
communication systems to overcome local outages -- but we don't need
to duplicate the internet to accomplish this.
73,
Dave, AA6YQ
--- In digitalradio@yahoogroups.com, Harold Aaron [EMAIL PROTECTED] wrote:
Agree
AA6YQ comments below
--- In digitalradio@yahoogroups.com, DuBose Walt Civ AETC
CONS/LGCA [EMAIL PROTECTED] wrote:
What was the motivation for a man to try and circumnavigate the
globe in a hot air balloon?
Why do individuals enter a triathlon or climb a high mountain?
Because its there to
Dave,
If a sound card implementation worked well, it would not be difficult to
move the Winlink 2000 system towards SCAMP. During the beta testing
about a year and a half ago, several PMBO's were readily set up to
handle SCAMP (Sound Card Amateur Messaging Protocol). It would not have
been
@yahoogroups.com [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 22, 2006 12:58 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: PC-ALE Signal Detect Before Transmitting: An
Experiment
I've not seen any signs of pent-up demand for WinLink that would be
unleashed if only a soundcard
Within PC-ALE there is a setting called Voice Detect, I had not
checked that box. I can confirm that with that box checked PC-ALE
never transmitted when scanning 550, 740 and 860 KHZ.
I then modified my settings to scan frequencies with lower signal
levels, 7120, 1, and 14300. PC-ALE
This looks like another proof that busy detection is feasible with
soundcard software. If you don't mind, Andy, please check its ability
to detect CW and RTTY.
The difference between asking is this frequency in use?,
sending QRL? in CW, and an ALE sounding is that few human operators
will
... Had SCAMP worked ...
73, Dave, AA6YQ
SCAMP failed? This is the first time I have read that
statement about SCAMP.
I have read over and over that SCAMP succeeded in many
areas and was still under development.
Did SCAMP truly fail, and in what specific areas, or
was it just not developed
The SCAMP/Winlink 2000 developer plans to eventually release SCAMP and
its busy detect software into the GPL someday. It is very low on his
priorities since there are few programmers for a closed proprietary
system such as Winlink 2000. There is hope that some of the developed
software could
The outcome of the SCAMP beta test was
1. busy detection worked much better than everyone expected for a
first iteration design
2. data transfer was insufficiently reliable under normal HF band
conditions
SCAMP used the RDFT engine for data transfer. Perhaps the SCAMP
developers will
SCAMP used the RDFT engine for data transfer. Perhaps the SCAMP
developers will replace this engine with a more effective
implementation, but if such work is ongoing, its being conducted
quietly.
73, Dave, AA6YQ
Given that the developers have little or no motivation
nor spare resources to
Andrew O'Brien wrote:
Within PC-ALE there is a setting called Voice Detect, I had not
checked that box. I can confirm that with that box checked PC-ALE
never transmitted when scanning 550, 740 and 860 KHZ.
I then modified my settings to scan frequencies with lower signal
levels, 7120,
Building a state-of-the-art implementation to the SCAMP requirements
(or beyond) would be an interesting project, but many developers
would consider it a dead end. Suppose we had such an implementation
in hand now. How would you convince the Winlink organization and its
user community to
Hopefully, there will be a shift toward more open software which would
be more in line with amateur radio tradition.
The Winlink 2000 folks keep everything proprietary up to this point.
That even includes the old software such as Winlink. From what we can
tell, Winlink 2000 has one main
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