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CX2SA > SATDIG 23.04.11 18:01l 742 Lines 23626 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Icom D-Star (Clint Bradford)
2. Re for sale (Gerry)
3. Re: Icom D-Star (Gordon JC Pearce)
4. Re: ICOM Giving Away D-Star Repeaters (Jeff Moore)
5. Re: Icom D-Star (Tony Langdon)
6. Re: [CubeSat] advice request for FUNcube (i8cvs)
7. One thing about Yuri... (K8TB)
8. Logsat anyone? (Joe Leikhim)
9. ISS APRS (Andrew Squires)
10. Aluminum Ant Element Corrosion (Clint Bradford)
11. Re: Icom D-Star (Gordon JC Pearce)
12. Re: Icom D-Star (Tony Langdon)
13. Re: advice request for FUNcube (Nick Pugh K5QXJ)
14. Echolink (Robert Collester Jr)
15. Re: Icom D-Star (Gordon JC Pearce)
16. Re: Echolink (Gordon JC Pearce)
17. DJ-G7 for LEO (Bill Acito)
18. Re: DJ-G7 for LEO (Andrew Glasbrenner)
19. Re: Icom D-Star (Gregg Wonderly)
----------------------------------------------------------------------
Message: 1
Date: Fri, 22 Apr 2011 12:29:40 -0700 (GMT-07:00)
From: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: amsat-bb@xxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID:
<12236091.1303500580591.JavaMail.root@xxxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
>> ... 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 of operation. But to demean it by tossing
in hints of it
being universally "illegal" is an irresponsible and immature tactic, IHMO.
Clint Bradford, K6LCS
http://www.k6lcs.com
----------------------------------
Clint Bradford, K6LCS
http://www.clintbradford.com
------------------------------
Message: 2
Date: Fri, 22 Apr 2011 15:03:58 -0500
From: "Gerry" <ve4gtb@xxxxx.xxx>
Subject: [amsat-bb] Re for sale
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BLU137-DS5987576BD6180D062832983950@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
To clear up any confusion, all prices listed in my previous message are
Canadian Funds.
Sorry but the rising Canadian dollar makes this necessary.
Gerry
------------------------------
Message: 3
Date: Fri, 22 Apr 2011 21:06:26 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: amsat-bb@xxxxx.xxx
Message-ID: <1303502786.7085.35.camel@xxxxx>
Content-Type: text/plain; charset="UTF-8"
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 transmission using secret codes is.
How, *exactly*, does DStar work? Be sure to include a full and accurate
description of how each frame of audio is compressed...
Gordon MM0YEQ
------------------------------
Message: 4
Date: Fri, 22 Apr 2011 13:13:16 -0700
From: "Jeff Moore" <tnetcenter@xxxxx.xxx>
Subject: [amsat-bb] Re: ICOM Giving Away D-Star Repeaters
To: <amsat-bb@xxxxx.xxx>
Message-ID: <DB71483585D548B1B2A39BF087A39F40@xxxxx>
Content-Type: text/plain; charset="iso-8859-1"
If you really knew what you were talking about you wouldn't be talking.
Jeff Moore -- KE7ACY
----- Original Message ----- From: "Gordon JC Pearce" <gordonjcp@xxxx.xxx>
[snip]
I know DStar appeals to the emcomm morons who like to play at being
police dispatchers, but it's not really amateur radio. [snip for
intelligence]
Gordon MM0YEQ
------------------------------
Message: 5
Date: Sat, 23 Apr 2011 07:58:05 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: Gordon JC Pearce <gordonjcp@xxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <4db1f9f5.28758e0a.177f.0051@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 06:06 AM 4/23/2011, Gordon JC Pearce wrote:
>No, but transmission using secret codes is.
Assuming the purpose is to obscure the meaning of the message.
>How, *exactly*, does DStar work? Be sure to include a full and accurate
>description of how each frame of audio is compressed...
No need to, there is a device readily available on the market that
will decode the audio for you, complete with data sheets, so anyone
with the relevant technical knowledge can build an AMBE decoder (and
some have). The purpose of the audio coding is compression. While
the algorithm is protected by patents, and the only economic way to
license it is to buy a chip from DVSI, they are readily available, as
is the documentation. And of course, if that's all too hard, you can
simply go to your local ham store and buy a D-STAR radio (as can the
authorities), or buy a DV dongle.
Your argument doesn't make sense, and I've clearly shown that the
purpose of AMBE is not to "obscure the meaning of the message", but
to facilitate communication, with means to decode it readily
available off the shelf. I certainly don't need any encryption keys
to decode D-STAR, just the right hardware. :)
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 6
Date: Sat, 23 Apr 2011 00:00:15 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: [CubeSat] advice request for FUNcube
To: "Jan King" <jking@xxxxxxxxxxxxxxxxxxx.xxx>, "Graham Shirville"
<g.shirville@xxxxxxxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>, "CubeSat @ CubeSat.org"
<cubesat@xxxxxxx.xxx>
Message-ID: <000901cc0138$aa3fb540$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Jan and Graham
If the biggest problem in a Cubesat is making the short bends as
possible it seems that the RG-178 B/U is preferable because it is
PTFE rated at -55 to +200 ?C and only 0.072" in diameter and
its minimum bending radius is 9 mm against 15 mm for the type
RG-188 A/U
The RG-178 B/U can be used with IPEX MHF connector, MMCX
Connector, MCX Connector, SSMB Connector and SMA Connector
or directly soldered in place if possible.
I have a few meters of RG-178 B/U and if necessary I can send
to you a piece of it into an envelope for test and experimentation.
See the RG-178 B/U specifications in the following page.
http://www.shbing.com/rg178-e.htm
73" de
i8CVS Domenico
----- Original Message -----
From: "Jan King" <jking@xxxxxxxxxxxxxxxxxxx.xxx>
To: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
Cc: "AMSAT BB" <amsat-bb@xxxxx.xxx>; "CubeSat @ CubeSat.org"
<cubesat@xxxxxxx.xxx>
Sent: Friday, April 22, 2011 2:22 AM
Subject: [amsat-bb] Re: [CubeSat] advice request for FUNcube
> Graham,
> My vote would be RG-188A/U. See my AMSAT-IARU Link Model Rev 2.4.3; Line
> Loss Tools and Tables Tab; First entry. Use the calculator there to get
> losses at various frequencies. It's PTFE wrapped and there are SMA and
SMC
> connectors made for it. Or you can solder it directly to the transmitter
> output, if you are careful. It's pretty flexible and can have about the
> shortest bend radius of any coax available. In the end, however, that
might
> be your biggest problem in a Cubesat - making the short bends.
> Jan
>
>
> On Wed, Apr 20, 2011 at 9:41 PM, Graham Shirville <
> g.shirville@xxxxxxxxxx.xxx> wrote:
>
> > hi All,
> >
> > A simple question this time!
> >
> > What is the best coax cable to use in a cubesat? Size, flexibility/min
> > radius, existing space heritage, ease of applying connectors are our
main
> > design drivers - we are only using UHF and VHF so losses are not going
to be
> > too much of a problem hopefully..
> >
> > many thanks in advance
> >
> > 73
> >
> > Graham
> > G3VZV
> >
> >
> > _______________________________________________
> > CubeSat mailing list
> > CubeSat@xxxxxxx.xxx
> > http://lists.cubesat.org/mailman/listinfo/cubesat
> >
> >
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Fri, 22 Apr 2011 18:02:40 -0400
From: K8TB <k8tb@xxxxxxxx.xxx>
Subject: [amsat-bb] One thing about Yuri...
To: amsat-bb@xxxxx.xxx
Message-ID: <4DB1FB00.4080605@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
He brings on the pileups!
Nice to hear QRM on the linear birds.
tom K8TB
------------------------------
Message: 8
Date: Fri, 22 Apr 2011 18:59:02 -0400
From: Joe Leikhim <rhyolite@xxxxxxxx.xxx>
Subject: [amsat-bb] Logsat anyone?
To: amsat-bb@xxxxx.xxx
Message-ID: <4DB20836.70705@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have just reinstalled LOGSAT and Y2k upgrade after a hiatus. If I
recall, the program would report the age of the KEPs on screen. Does
anyone remember how to bring this up? I can't make it show up. Thanks.
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
www.Leikhim.com
JLeikhim@xxxxxxx.xxx
407-982-0446
------------------------------
Message: 9
Date: Sat, 23 Apr 2011 10:22:49 +1000
From: Andrew Squires <asquires@xxxxxxx.xxx.xx>
Subject: [amsat-bb] ISS APRS
To: amsat-bb@xxxxx.xxx
Message-ID: <E72340F7-D53F-4C91-B33A-8EF8B013CDFB@xxxxxxx.xxx.xx>
Content-Type: text/plain; charset=us-ascii
copied ISS APRS 5 degree elevation pass at 2305Z this morning.Unable to get
a packet in due low power TH-D72.Will check again next pass.
73 Andy
VK3AS
------------------------------
Message: 10
Date: Fri, 22 Apr 2011 17:50:08 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] Aluminum Ant Element Corrosion
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <60D32627-DCF5-482F-9CA0-EE81B82633FA@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Thanks for your quick replies, which ranged from ...
>> ,,, I've rebuilt antennas that were VERY corroded by using 600 grit sand
paper to
polish off all the crud, blew the dust off with dry compressed air, then wiped
them down with denatured alcohol, gave them a good coat of self-etching
primer,
and after waiting a few days for the primer to fully set up, painted them with
one-part epoxy paint. I've never seen ANY evidence of detuning from this
process,
and some of the antennas I did 5 years ago still look like the day I
finished them.
>> ,,, I was just told that the phosphoric acid in LocTite's "Aluminum
Jelly" works
well, too.
>> ... I was recommending the cleaning of the elements, then a liberal
dousing of
marine spar varnish for protection. But after years of recommending that, I
had
one person tell me that it wasn't good for him ...
Clint
------------------------------
Message: 11
Date: Sat, 23 Apr 2011 10:33:21 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: amsat-bb@xxxxx.xxx
Message-ID: <1303551201.7085.37.camel@xxxxx>
Content-Type: text/plain; charset="UTF-8"
On Sat, 2011-04-23 at 07:58 +1000, Tony Langdon wrote:
> some have). The purpose of the audio coding is compression. While
> the algorithm is protected by patents, and the only economic way to
> license it is to buy a chip from DVSI, they are readily available, as
> is the documentation.
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.
Proprietary software has no place in Amateur Radio.
Gordon MM0YEQ
------------------------------
Message: 12
Date: Sat, 23 Apr 2011 20:00:57 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: amsat-bb@xxxxx.xxx
Message-ID: <4db2a360.8934440a.2301.0db9@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
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 place in Amateur Radio.
It's hardware with firmware. So let's throw out all the other
proprietary bits (processors with embedded code, etc) and go back to
soldering valves?
The simple fact of the matter was back around 2000 when the D-STAR
spec was developed, there weren't a lot of choices for how to
compress speech into 2.4kbps and have FEC. AND have it available in
a suitable form for implementation into mobile and handheld
radios. While the proprietary codec is a minor inconvenience in some
situations, it's proved to be no impediment to home brew enhancements
to D-STAR. The number of ham developed D-STAR projects is
significant, so that one chip hasn't proved to be an impediment to
ham experimentation in practice.
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 13
Date: Sat, 23 Apr 2011 05:15:46 -0500
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: advice request for FUNcube
To: "'Graham Shirville'" <g.shirville@xxxxxxxxxx.xxx>, "'CubeSat @
CubeSat.org'" <cubesat@xxxxxxx.xxx>, "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <06b301cc019f$69d052f0$3d70f8d0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Rg 174 will work
nick
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Graham Shirville
Sent: Wednesday, April 20, 2011 6:41 AM
To: CubeSat @ CubeSat.org; AMSAT BB
Subject: [amsat-bb] advice request for FUNcube
hi All,
A simple question this time!
What is the best coax cable to use in a cubesat? Size, flexibility/min
radius, existing space heritage, ease of applying connectors are our main
design drivers - we are only using UHF and VHF so losses are not going to be
too much of a problem hopefully..
many thanks in advance
73
Graham
G3VZV
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 14
Date: Fri, 22 Apr 2011 21:19:42 -0400
From: Robert Collester Jr <rcollesterjrloud@xxxxx.xxx>
Subject: [amsat-bb] Echolink
To: amsat-bb@xxxxx.xxx
Message-ID: <BANLkTimF29jrb_Br1siRvBFJC1LpagquEg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Echolink Users,
I have Echolink but my 2-meter hand-held has no connectivity. Is there
someone who will allow me to conference with them on Thursday nights, just
before the start of the net?
Bob Collester -- DaddyBob
KJ4HUH
------------------------------
Message: 15
Date: Sat, 23 Apr 2011 11:37:39 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: amsat-bb@xxxxx.xxx
Message-ID: <1303555059.7085.49.camel@xxxxx>
Content-Type: text/plain; charset="UTF-8"
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 small (possible 1 off) quantities.
I'd love to know where you're seeing them for that much in onesy-twoesy
quantities
> >Proprietary software has no place in Amateur Radio.
>
> It's hardware with firmware. So let's throw out all the other
> proprietary bits (processors with embedded code, etc) and go back to
> soldering valves?
Yes, throw out the proprietary bits. Write your own, it's easy.
> The simple fact of the matter was back around 2000 when the D-STAR
> spec was developed, there weren't a lot of choices for how to
> compress speech into 2.4kbps and have FEC. AND have it available in
> a suitable form for implementation into mobile and handheld
> radios. While the proprietary codec is a minor inconvenience in some
> situations, it's proved to be no impediment to home brew enhancements
> to D-STAR. The number of ham developed D-STAR projects is
> significant, so that one chip hasn't proved to be an impediment to
> ham experimentation in practice.
Yes, "back around 2000". It's over ten years old. We have better
codecs and better modulation schemes now. Why are we crippling digital
comms with a single-source proprietary codec that sounds like an angry
duck in a tin outhouse?
The commercial world is no better - just look at DMR, which uses the
same awful AMBE codec!
Gordon MM0YEQ
------------------------------
Message: 16
Date: Sat, 23 Apr 2011 11:44:36 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Echolink
To: amsat-bb@xxxxx.xxx
Message-ID: <1303555476.7085.50.camel@xxxxx>
Content-Type: text/plain; charset="UTF-8"
On Fri, 2011-04-22 at 21:19 -0400, Robert Collester Jr wrote:
> Echolink Users,
>
> I have Echolink but my 2-meter hand-held has no connectivity. Is there
> someone who will allow me to conference with them on Thursday nights, just
> before the start of the net?
>
> Bob Collester -- DaddyBob
> KJ4HUH
You can't contrive some way of injecting DTMF into it? How about
holding the earpiece of your phone up to the mike and dialling the
number?
Gordon MM0YEQ
------------------------------
Message: 17
Date: Sat, 23 Apr 2011 09:27:02 -0400
From: Bill Acito <w1pa@xxxxxxx.xxx>
Subject: [amsat-bb] DJ-G7 for LEO
To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <BAY157-w144F487815B8332D488C8198940@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Anyone using (first hand) one of these for FM LEO's? I have read that the
sub-band
(when running full duplex) may not be as sensitive? How well does it work?
Bill W1PA
------------------------------
Message: 18
Date: Sat, 23 Apr 2011 06:47:11 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: DJ-G7 for LEO
To: Bill Acito <w1pa@xxxxxxx.xxx>, "AMSAT-BB@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Message-ID:
<6056484.1303555631610.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Big thumbs down, as the full duplex desenses very badly. Nice radio
otherwise, but stinks for satellite. I bought one of the first hundred, and
have kept up with the firmware updates.
73, Drew KO4MA
-----Original Message-----
>From: Bill Acito <w1pa@xxxxxxx.xxx>
>Sent: Apr 23, 2011 9:27 AM
>To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
>Subject: [amsat-bb] DJ-G7 for LEO
>
>
>Anyone using (first hand) one of these for FM LEO's? I have read that the
sub-band
>(when running full duplex) may not be as sensitive? How well does it work?
>
>Bill W1PA
>
>_______________________________________________
>Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>Not an AMSAT-NA member? Join now to support the amateur satellite program!
>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 19
Date: Sat, 23 Apr 2011 10:42:53 -0500
From: Gregg Wonderly <greggwon@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4DB2F37D.9000305@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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 windows,
MacOS-X, and many other software based systems. If you are an FPGA
programmer,
perhaps you can build an FPGA based CODEC for amateur radio that would do
voice
compression etc. But in the end, you also have to have an transmitter with
the
appropriate bandwidth output to reduce the spectrum used.
It's by no means a simple task. Everything in a radio system has to change to
do spectrum conservation or provide high speed digital data transmission.
The simple fact is that HAM radio emission standards (simple voice modulated
with some simple emission standard) are now more than a century old. As
capable as they are, the abilities they present seem minimal to some. I think
that there are great things about them because they do allow long distance
communications which the HAM community regularly uses to support distant
operations which provide aid to areas struck by natural disaster.
But, we all have to understand that it costs money to do anything "new and
different". People experimenting with stuff is great, but it minimizes who
can
participate if you have to "build it" or "pay a lot". That's just life in
general. You can't participate in everything unless you have the resources to
do that.
In the US, any digital communications that is coded in some way only needs to
have a publicly visible document detailing how it works for the FCC
regulations
to be met. Other places in the world may have different requirements and
that's nothing new is it?
Gregg Wonderly
W5GGW
On 4/23/2011 5:37 AM, Gordon JC Pearce wrote:
> 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 small (possible 1 off) quantities.
> I'd love to know where you're seeing them for that much in onesy-twoesy
> quantities
>
>>> Proprietary software has no place in Amateur Radio.
>> It's hardware with firmware. So let's throw out all the other
>> proprietary bits (processors with embedded code, etc) and go back to
>> soldering valves?
> Yes, throw out the proprietary bits. Write your own, it's easy.
>
>> The simple fact of the matter was back around 2000 when the D-STAR
>> spec was developed, there weren't a lot of choices for how to
>> compress speech into 2.4kbps and have FEC. AND have it available in
>> a suitable form for implementation into mobile and handheld
>> radios. While the proprietary codec is a minor inconvenience in some
>> situations, it's proved to be no impediment to home brew enhancements
>> to D-STAR. The number of ham developed D-STAR projects is
>> significant, so that one chip hasn't proved to be an impediment to
>> ham experimentation in practice.
> Yes, "back around 2000". It's over ten years old. We have better
> codecs and better modulation schemes now. Why are we crippling digital
> comms with a single-source proprietary codec that sounds like an angry
> duck in a tin outhouse?
>
> The commercial world is no better - just look at DMR, which uses the
> same awful AMBE codec!
>
> Gordon MM0YEQ
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 235
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