Bruce,
In a way, I agree that we could just gateway the audio and be done with it, but
is that really the best possible solution? It doesn't handle things in the
most efficient manner and has its own set of issues, which I've discussed with
a ham from Australia recently. One of those issues is how do you handle the ham
that has a Codec 2 capable transceiver that insists on trying to use the local
D-Star repeater? If we can figure that out, using Codec 2 on VHF/UHF will be
something to work on; until then, I will limit my experiments to Echolink-style
bridging.
Matthew Pitts
N8OHU
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: Bruce Perens <br...@perens.com>
Date: Mon, 28 Nov 2011 18:12:03
To: <freetel-codec2@lists.sourceforge.net>
Reply-To: freetel-codec2@lists.sourceforge.net
Subject: Re: [Freetel-codec2] HF narrow band
On 11/28/2011 05:52 PM, n8...@yahoo.com wrote:
> I see a number of potential problems with your VHF/UHF idea, most of which
> are compatibility issues with existing Icom repeater hardware and end-user
> radios;
Hi Matthew,
D*STAR isn't the way we'd do digital radio today. Although it's possible
to fit Codec2 in a D*STAR packet, and even possible to retrofit the
daughter boards in older ICOM HTs and mobiles, it's not clear that this
would be the best use of effort. There are only about 550 D*STAR
repeaters nationally, and ICOM had to give some of them away to get that
many. It's not taken over VHF and UHF to the extent that we have to be
compatible with it.
A much easier alternative is to gateway Codec2 voice to D*STAR. Just
network together, translating codecs and protocols. Everyone can talk
together that way.
We are at the point that HTs can be SDR, removing some of the hardware
limitations. There is a lot of room for us to experiment with FEC and
modulation. We're not tied to narrow-band, spread-spectrum can be tried
as well.
Thanks
Bruc e
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