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Re: Cross linking (Was: Codec2)
John,
I think as long as the proper display is there, someone using the 1.2k gmsk modem with analog audio (or echolink with callsign pass-through) won't really be noticed. It will probably require
John,
I think as long as the proper display is there, someone using the 1.2k gmsk modem with analog audio (or echolink with callsign pass-through) won't really be noticed. It will probably require
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By
Matthew Pitts <daywalker_blade_2004@...>
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#106
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Re: Cross linking (Was: Codec2)
John
Completely agree.
Where I’ve interworked FM to D-Star, I’ve found the results to be perfectly acceptable within the confines of Amateur Radio.
You wouldn’t want to listen to
John
Completely agree.
Where I’ve interworked FM to D-Star, I’ve found the results to be perfectly acceptable within the confines of Amateur Radio.
You wouldn’t want to listen to
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By
"David Lake (dlake)" <dlake@...>
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#105
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Cross linking (Was: Codec2)
The argument that analog should never be linked to digital because of white noise and other artifacts forgets that Vocoders (as opposed to Codecs) like AMBE and Codec-2 are specifically looking for
The argument that analog should never be linked to digital because of white noise and other artifacts forgets that Vocoders (as opposed to Codecs) like AMBE and Codec-2 are specifically looking for
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By
"John D. Hays" <john@...>
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#104
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Re: Codec2
Which is a good reason to be clever about how we do things. :) I'm a believer in fiddling with the signal as little as possible, for this very reason.
73 de VK3JED / VK3IRL
http://vkradio.com
Which is a good reason to be clever about how we do things. :) I'm a believer in fiddling with the signal as little as possible, for this very reason.
73 de VK3JED / VK3IRL
http://vkradio.com
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#103
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Re: Codec2
Another reason to push the network translation to the edge of the network, and another reason why EchoIRLP was better than other cross network solutions at the time. If you have multi protocol
Another reason to push the network translation to the edge of the network, and another reason why EchoIRLP was better than other cross network solutions at the time. If you have multi protocol
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"Tony Langdon, VK3JED" <vk3jed@...>
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#102
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Re: Codec2
Actually, there is a way, but it requires some money thrown at the problem. I have a German built DSP that is incredibly effectively at removing FM background noise. Maybe something to experiment
Actually, there is a way, but it requires some money thrown at the problem. I have a German built DSP that is incredibly effectively at removing FM background noise. Maybe something to experiment
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"Tony Langdon, VK3JED" <vk3jed@...>
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#101
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Re: Codec2
True, useful in densely populated areas. Out where I am, where there's fewer repeaters and bigger distances, I'm concerned about the cost of that increased capacity - namely the effect on range,
True, useful in densely populated areas. Out where I am, where there's fewer repeaters and bigger distances, I'm concerned about the cost of that increased capacity - namely the effect on range,
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"Tony Langdon, VK3JED" <vk3jed@...>
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#100
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Re: Open Source Hardware...
A few years back, there was an organization that developed two open source phone called the Openmoko Neo and Freerunner. The devices were nearly entirely open source... Everything but the GSM Radio,
A few years back, there was an organization that developed two open source phone called the Openmoko Neo and Freerunner. The devices were nearly entirely open source... Everything but the GSM Radio,
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By
Tyrell Berry <kd7kuj@...>
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#99
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Re: Codec2
I would add that there has been a lot of work done looking at tandeming vocoders. Conclusion a noticeable loss in audio quality measured in the mean opinion score. If you could find a way to bridge
I would add that there has been a lot of work done looking at tandeming vocoders. Conclusion a noticeable loss in audio quality measured in the mean opinion score. If you could find a way to bridge
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By
Tom Azlin N4ZPT <tom@...>
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#98
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Re: Open Source Hardware...
the comment “ … doesn’t exist” is in accurate.
Ardruino is very open source hardware. (all the way down to the boot loader, and development packages)
Fpga projects can be open source
the comment “ … doesn’t exist” is in accurate.
Ardruino is very open source hardware. (all the way down to the boot loader, and development packages)
Fpga projects can be open source
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By
"William Stillwell - KI4SWY" <wkstill@...>
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#97
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Re: Open Source Hardware...
Brian,
The Winlink development team would be interested in purchasing two unitswhen available through our 501C3 organization the Amateur Radio safetyFoundation. www.arsfi.org We have anumber sights
Brian,
The Winlink development team would be interested in purchasing two unitswhen available through our 501C3 organization the Amateur Radio safetyFoundation. www.arsfi.org We have anumber sights
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By
"Rick Muething" <rmuething@...>
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#94
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Open Source Hardware...
... doesn't exist.
This forum has been wonderfully active on a variety of topics. It's great to see the exchange as hams weigh in with their hopes and dreams, but there is one topic that I need to
... doesn't exist.
This forum has been wonderfully active on a variety of topics. It's great to see the exchange as hams weigh in with their hopes and dreams, but there is one topic that I need to
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By
UniversalDigitalRadio-owner@...
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#92
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Re: Codec2
A good point! We'll have to see what shakes out as the experimenters "experiment" with linking digital systems.
73 de Tim, AF1G
---- Tyrell Berry <kd7kuj@...> wrote:
=============
When dealing
A good point! We'll have to see what shakes out as the experimenters "experiment" with linking digital systems.
73 de Tim, AF1G
---- Tyrell Berry <kd7kuj@...> wrote:
=============
When dealing
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By
Tim Hardy AF1G <hardyt@...>
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#96
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Re: Codec2
Tim
If this was professional radio, then I'd agree. But it isn't - it's hobby radio, and the goal is to experiment, not to provide a service-provider grade network.
As a friend of mine recently
Tim
If this was professional radio, then I'd agree. But it isn't - it's hobby radio, and the goal is to experiment, not to provide a service-provider grade network.
As a friend of mine recently
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By
"David Lake (dlake)" <dlake@...>
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#95
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Re: Codec2
Witness, in order of decreasing quality, conversations from:
*) Analog phone -> analog phone
*) Analog phone -> cell-phone
*) cell-phone -> cell-phone, same technology
*) cell-phone
Witness, in order of decreasing quality, conversations from:
*) Analog phone -> analog phone
*) Analog phone -> cell-phone
*) cell-phone -> cell-phone, same technology
*) cell-phone
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By
"Curt, WE7U" <curt.we7u@...>
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#93
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Re: Codec2
When dealing with music, I consider myself an audiophile. When I buy a CD, I rip it to my home server in the FLAC format; No, I don't carry loss less audio around on my portable devices... But I
When dealing with music, I consider myself an audiophile. When I buy a CD, I rip it to my home server in the FLAC format; No, I don't carry loss less audio around on my portable devices... But I
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By
Tyrell Berry <kd7kuj@...>
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#91
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Re: Codec2
So the main benefit of TDMA is being able to double repeater capacity in one RF slot. That's one antenna, one duplexer, one site rental. Certainly in the UK where we pay commercial rates for tower
So the main benefit of TDMA is being able to double repeater capacity in one RF slot. That's one antenna, one duplexer, one site rental. Certainly in the UK where we pay commercial rates for tower
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By
"David Lake (dlake)" <dlake@...>
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#90
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Re: No 2m but still an APRS igate?
I was actually thinking of using a soundmodem to add a second TNC to my D710. The intent was to run Winlink 2000 on one and APRS on the other, from the same laptop. The radio does the -plexing.
I was actually thinking of using a soundmodem to add a second TNC to my D710. The intent was to run Winlink 2000 on one and APRS on the other, from the same laptop. The radio does the -plexing.
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By
Sander Pool <sander_pool@...>
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#89
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Re: Codec2
I'm not opposed to linking different protocols, but there is value in some of the objections to linking specific networks. If the objections or concerns can be mitigated, then fewer people would
I'm not opposed to linking different protocols, but there is value in some of the objections to linking specific networks. If the objections or concerns can be mitigated, then fewer people would
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By
Tim Hardy AF1G <hardyt@...>
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#88
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Re: Modifying the Design
And still going to be under USD400????
Let’s just get this one on the market and then worry about bigger and better (?) models.
Howard
VK4BS
And still going to be under USD400????
Let’s just get this one on the market and then worry about bigger and better (?) models.
Howard
VK4BS
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By
"Howard Small" <howard@...>
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#87
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