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Re: PHY Layer Protocols
D-STAR does use FEC in the AMBE sub-frames, but it was not specified for the entire packet or payload. The D-STAR Data (DD) implementation simply wraps Ethernet frames and does not have FEC.
--
D-STAR does use FEC in the AMBE sub-frames, but it was not specified for the entire packet or payload. The D-STAR Data (DD) implementation simply wraps Ethernet frames and does not have FEC.
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By
"John D. Hays" <john@...>
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#890
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Re: How Open? How Free? OpenBSD? NetBSD?
>Otherwise, I must assume that you have a Raspberry Pi situation.
What's wrong with the Raspberry Pi? The best I can tell, this sums it up well, and I don't see a real problem:
>Otherwise, I must assume that you have a Raspberry Pi situation.
What's wrong with the Raspberry Pi? The best I can tell, this sums it up well, and I don't see a real problem:
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By
"Tyrell Jentink, KD7KUJ" <tyrell@...>
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#889
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How open are we?
This is a good topic and deserves it's own thread.
First off NW Digital Radio is a for profit corporation. We design and manufacture HW and sell it with adequate margins to keep us doing it in the
This is a good topic and deserves it's own thread.
First off NW Digital Radio is a for profit corporation. We design and manufacture HW and sell it with adequate margins to keep us doing it in the
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By
bhhoyer@...
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#887
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Re: PHY Layer Protocols
FEC is just overhead unless you really need it. On nearly loss-less channels (which is what we should expect on short haul 70 cm links), you lose more throughput than you gain with FEC. If we were
FEC is just overhead unless you really need it. On nearly loss-less channels (which is what we should expect on short haul 70 cm links), you lose more throughput than you gain with FEC. If we were
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By
myyahoo@...
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#888
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Re: How Open? How Free? OpenBSD? NetBSD?
[UniversalDigitalRadio] <UniversalDigitalRadio@...> wrote:
Allowing us to see the source isn't terribly useful. To do great
things, we need the code to come with a license that allows
[UniversalDigitalRadio] <UniversalDigitalRadio@...> wrote:
Allowing us to see the source isn't terribly useful. To do great
things, we need the code to come with a license that allows
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By
Tom Hayward <esarfl@...>
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#886
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Re: How Open? How Free? OpenBSD? NetBSD?
--- John Hays K7VE wrote:
> Some components, e.g. the AMBE-3000 chip,
> are protected intellectual property ...
I understand, and I really don't care. I won't use it. I can use Codec2 instead.
By the
--- John Hays K7VE wrote:
> Some components, e.g. the AMBE-3000 chip,
> are protected intellectual property ...
I understand, and I really don't care. I won't use it. I can use Codec2 instead.
By the
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By
dsp_stap@...
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#885
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Re: PHY Layer Protocols
--- John Hays K7VE wrote:
>Raw TCP/IP packets will need some kind
> of synchronization training sequence at
> the beginning.
Right. Each lower layer wraps the previous upper layer in its own header
--- John Hays K7VE wrote:
>Raw TCP/IP packets will need some kind
> of synchronization training sequence at
> the beginning.
Right. Each lower layer wraps the previous upper layer in its own header
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By
dsp_stap@...
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#884
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Re: How Open? How Free? OpenBSD? NetBSD?
Different people have different definitions of these terms. Here is our vision.
NW Digital Radio builds hardware. We depend on many outside software developers, mostly open source, to support our
Different people have different definitions of these terms. Here is our vision.
NW Digital Radio builds hardware. We depend on many outside software developers, mostly open source, to support our
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By
"John D. Hays" <john@...>
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#883
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Re: RF access point application confirmation
Ken,
Raw TCP/IP packets will need some kind of synchronization training sequence at the beginning. Right now we have two Amateur protocols that provide framing around TCP/IP and handle the
Ken,
Raw TCP/IP packets will need some kind of synchronization training sequence at the beginning. Right now we have two Amateur protocols that provide framing around TCP/IP and handle the
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By
"John D. Hays" <john@...>
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#881
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How Open? How Free? OpenBSD? NetBSD?
How open/free will the platform be?
Will I be able to port OpenBSD, compile all of the device drivers, and have the computer/radio run on OpenBSD instead of Linux? (Requiring GPL for some software is
How open/free will the platform be?
Will I be able to port OpenBSD, compile all of the device drivers, and have the computer/radio run on OpenBSD instead of Linux? (Requiring GPL for some software is
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By
dsp_stap@...
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#882
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Re: RF access point application confirmation
--- Michael E Fox - N6MEF wrote:
> The UDRX-440 functions as either a layer 2 bridge or a layer 3 router.
I'm interested only in TCP/IP, not AX.25 or D-Star. So I have the same question.
If the radio
--- Michael E Fox - N6MEF wrote:
> The UDRX-440 functions as either a layer 2 bridge or a layer 3 router.
I'm interested only in TCP/IP, not AX.25 or D-Star. So I have the same question.
If the radio
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By
dsp_stap@...
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#880
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Re: 44 addresses / JNOS 56K / Gateway Security ?
That was fun...
Just rediscovered the "NW DIgital Radio" Facebook group and invited a
hundred or so of my closest ham friends.. That's one little step
toward moving beyond the 20th
That was fun...
Just rediscovered the "NW DIgital Radio" Facebook group and invited a
hundred or so of my closest ham friends.. That's one little step
toward moving beyond the 20th
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By
Bill Vodall <wa7nwp@...>
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#879
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Re: 44 addresses / JNOS 56K / Gateway Security ?
I had a similar experience when, several years ago, we had a nasty
windstorm that nailed the power grid and it was lights out for 5 days.
That's when I realized that Ham Radio with APRS was THE
I had a similar experience when, several years ago, we had a nasty
windstorm that nailed the power grid and it was lights out for 5 days.
That's when I realized that Ham Radio with APRS was THE
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By
Bill Vodall <wa7nwp@...>
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#878
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Re: 44 addresses / JNOS 56K / Gateway Security ?
1.5 billion earthlings find social networks a bit more interesting..
Compare that to the 15 or so folks still on packet radio.. The
multi-media multi-mode communications web application (Facebook
1.5 billion earthlings find social networks a bit more interesting..
Compare that to the 15 or so folks still on packet radio.. The
multi-media multi-mode communications web application (Facebook
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By
Bill Vodall <wa7nwp@...>
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#877
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Re: 44 addresses / JNOS 56K / Gateway Security ?
A few years ago, there was a crash at the National Championship Air Races in Reno, NV, injured dozens, killed a few. I wasn't there... I was 10 miles away at the time; Yet, the cell network was down,
A few years ago, there was a crash at the National Championship Air Races in Reno, NV, injured dozens, killed a few. I wasn't there... I was 10 miles away at the time; Yet, the cell network was down,
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By
"Tyrell Jentink, KD7KUJ" <tyrell@...>
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#876
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Re: 44 addresses / JNOS 56K / Gateway Security ?
Amateur radio was/is portable/mobile/base station radios giving those
who can pass an exam the capability to talk across town or around
the world using voice and data. No infrastructure required.
Amateur radio was/is portable/mobile/base station radios giving those
who can pass an exam the capability to talk across town or around
the world using voice and data. No infrastructure required.
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By
ve7dhm@...
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#875
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Re: 44 addresses / JNOS 56K / Gateway Security ?
Well, thanks for the feedback. All comments interesting.
44 allocation request: I have a request in at portal.amp.org
The BC admin emailed me and after some discussion he forward
my allocation
Well, thanks for the feedback. All comments interesting.
44 allocation request: I have a request in at portal.amp.org
The BC admin emailed me and after some discussion he forward
my allocation
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By
ve7dhm@...
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#874
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Re: 44 addresses / JNOS 56K / Gateway Security ?
Had you said "We wanna make a facebook-like social network," that would have been one thing... It's probably a "Thing" that would be popular for a few minutes in a few geographic regions before
Had you said "We wanna make a facebook-like social network," that would have been one thing... It's probably a "Thing" that would be popular for a few minutes in a few geographic regions before
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By
"Tyrell Jentink, KD7KUJ" <tyrell@...>
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#873
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Re: 44 addresses / JNOS 56K / Gateway Security ?
That's an implementation detail. Our better version can be and do
what we want... It's the concept, and beyond, that we need to work
on.
Bill
That's an implementation detail. Our better version can be and do
what we want... It's the concept, and beyond, that we need to work
on.
Bill
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By
Bill Vodall <wa7nwp@...>
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#872
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Re: 44 addresses / JNOS 56K / Gateway Security ?
Facebook uses HTTPS, which is encrypted, and is definitely designed to "Obscure the meaning of the message," and is definitely against the rules in the US.
Facebook uses HTTPS, which is encrypted, and is definitely designed to "Obscure the meaning of the message," and is definitely against the rules in the US.
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By
"Tyrell Jentink, KD7KUJ" <tyrell@...>
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#871
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