Hi Greg,
Sorry to say this, but your analogy to just another component
is plain wrong. The vocoder cannot be replaced by another generic
component as far as I can ascertain. I cant' even find the algorithms
that would allow me to program a DSPIC or fpga at home in my meager lab
to
On 4/29/2011 3:23 AM, don wrote:
Hi Greg,
Sorry to say this, but your analogy to just another component is
plain wrong. The vocoder cannot be replaced by another generic component as
far as I can ascertain. I cant' even find the algorithms that would allow me
to program a DSPIC or
One of the ways to look at the voice codec is as a capacitor, amplifier or
some other component of you circuit design. Sure, it's single source, but if
you are careful about how you put it in, you can provide a switched circuit,
daughter board or some other path to alternative codecs. It just
At 06:38 AM 4/29/2011, Bob Bruninga wrote:
Tell that to the likes of G4KLX, KI4LKF, the ircDDB team,
PA4YBR, the designers and builders of various GMSK modems,
and even AA4RC and Moe, who designed the DV Dongle hardware...
The real thing that would explode D-star onto the world stage would
So as every followup seems to have detailed, there is an increase in desired
bandwidth with a direct need in required spectrum. If we can reduce spectrum,
we increase distance the signal can transit. If we increase bandwidth for a
particular size spectrum, we improve the amount of information
On Wed, 2011-04-27 at 09:00 -0500, Gregg Wonderly wrote:
This is one of those experimentation moments. Not everyone is happy with
where
it is at, but without some more participation, those experimenting now will
be
the ones setting the standards, and if you are not happy with those
At 11:33 AM 4/28/2011, you wrote:
I'd like to point out that it's difficult, at best, to participate when
you can't roll your own. There are many codecs available out there
today that don't require purchasing a license to use. The biggest
problem right now is that D-Star isn't backward
On 04/27/2011 09:33 PM, Eric Christensen wrote:
On Wed, 2011-04-27 at 09:00 -0500, Gregg Wonderly wrote:
This is one of those experimentation moments. Not everyone is happy with
where
it is at, but without some more participation, those experimenting now will
be
the ones setting the
On 4/23/2011 2:42 PM, Gordon JC Pearce wrote:
On Sat, 2011-04-23 at 10:42 -0500, Gregg Wonderly wrote:
In the end, digital compression of spectrum space is going to happen more and
more. AM style broadcast is hugely inefficient even though it is painfully
Okay, but *why*? Why are we so
Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Tony Langdon
Sent: Saturday, April 23, 2011 2:33 PM
To: Gregg Wonderly; Gordon JC Pearce
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Icom D-Star
At 01:42 AM 4/24/2011, Gregg Wonderly wrote:
In the end
Never heard of WSJT?
Amateurs who are serious about weak signal work have been using that for years,
for both terrestrial communications, and moonbounce on VHF and above.
And it's also being used quite often now on HF. 10 meters is good example.
When propagation doesn't allow for SSB,
On Sun, Apr 24, 2011 at 02:36:37PM -0400, Sebastian wrote:
Never heard of WSJT?
Never heard of it.
- 73 Diane VA3DB
--
- d...@freebsd.org d...@db.net http://www.db.net/~db
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
At 11:18 AM 4/24/2011, Diane Bruce wrote:
On Sun, Apr 24, 2011 at 02:36:37PM -0400, Sebastian wrote:
Never heard of WSJT?
Never heard of it.
- 73 Diane VA3DB
--
Diane,
I'm surprised as involved in mw as you are.
Here is a link to the software:
http://physics.princeton.edu/pulsar/K1JT/
Joe
- Original Message -
From: Edward R. Cole kl...@acsalaska.net
To: Diane Bruce d...@db.net
Cc: amsat-bb amsat-bb@amsat.org
Sent: Sunday, April 24, 2011 9:49 PM
Subject: [amsat-bb] Re: Icom D-Star
The prime mode for 2m eme is now JT-65; CW
has been largely replaced.
73, Ed - KL7UW
At 07:43 AM 4/25/2011, i8cvs wrote:
I am anxious about that because even on EME very soon
nobody will be able to use by hand a CW key and copy
Morse Code by ears.
I don't think Morse is in any danger. I've seen an increase in
interest since the compulsory Morse exams were dropped in this part
At 01:43 PM 4/24/2011, i8cvs wrote:
- Original Message -
From: Edward R. Cole kl...@acsalaska.net
To: Diane Bruce d...@db.net
Cc: amsat-bb amsat-bb@amsat.org
Sent: Sunday, April 24, 2011 9:49 PM
Subject: [amsat-bb] Re: Icom D-Star
The prime mode for 2m eme is now JT-65; CW
has been
At 07:33 PM 4/23/2011, you wrote:
The chips are readily available at a few hundred dollars apiece, and
if you attempt to implement your own AMBE codec then you're going to
have DVSI's lawyers jumping on you.
More like $20 apiece in small (possible 1 off) quantities.
Proprietary software has no
On Sat, 2011-04-23 at 20:00 +1000, Tony Langdon wrote:
At 07:33 PM 4/23/2011, you wrote:
The chips are readily available at a few hundred dollars apiece, and
if you attempt to implement your own AMBE codec then you're going to
have DVSI's lawyers jumping on you.
More like $20 apiece in
In the end, digital compression of spectrum space is going to happen more and
more. AM style broadcast is hugely inefficient even though it is painfully
simple to do. I don't really believe that D-Star is the right choice for
everything because it is single source. But, so is Microsoft
On Sat, 2011-04-23 at 10:42 -0500, Gregg Wonderly wrote:
In the end, digital compression of spectrum space is going to happen more and
more. AM style broadcast is hugely inefficient even though it is painfully
Okay, but *why*? Why are we so obsessed with squeezing bandwidth down
and down,
At 01:42 AM 4/24/2011, Gregg Wonderly wrote:
In the end, digital compression of spectrum space is going to happen more and
more. AM style broadcast is hugely inefficient even though it is painfully
simple to do. I don't really believe that D-Star is the right choice for
everything because it is
At 04:42 AM 4/24/2011, Gordon JC Pearce wrote:
On Sat, 2011-04-23 at 10:42 -0500, Gregg Wonderly wrote:
In the end, digital compression of spectrum space is going to
happen more and
more. AM style broadcast is hugely inefficient even though it is
painfully
Okay, but *why*? Why are we so
... They shouldn't be allowed to sell them for use on the amateur bands.
Aren't secret codes illegal?
I didn't know that the transmission of one's callsign and GPS coordinates was
illegal ...
And of course it isn't.
... it's not really amateur radio ...
It seems you do not like this mode
On Fri, 2011-04-22 at 12:29 -0700, Clint Bradford wrote:
... They shouldn't be allowed to sell them for use on the amateur bands.
Aren't secret codes illegal?
I didn't know that the transmission of one's callsign and GPS coordinates was
illegal ...
And of course it isn't.
No, but
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