I don't know, but the most experimenting I have heard with digital voice
has been the APCO-25 digital in use for public safety.  It is because
public safety radios for VHF/UHF can tune the ham bands and use the
digital voice mode.





On Fri, 4 Aug 2006, Colin McDonald wrote:

> what about the D star radios from Icom? don't they do some sort of digital
> voice?
> I know they do digital data, but i thought they also did some sort of
> digital voice incription as well.
>
> only problem with doing digital voice on the amateur bands is that it has to
> be a completely open source incription type that anyone could easily decode
> since if it weren't,it could be considered secret encoded messages, which,
> as far as i know, are illegal in the US as well without permission from the
> FCC?
>
> The canadian regulations, paraphrasing of course, make it illegal to use any
> kind of secret code to pass messages without express permission from the
> government.  Digital voice incription could potentially fall under that
> category.
> If someone was using say provoice or even apco 25 on a local simplex
> frequency, it would be nearly impossible for me, or anyone else to know what
> they were saying since we wouldn't have the necessary codec to decode their
> transmission.  The transmission would there for be in a "secret" code and
> against regulations.
> Now,if a person offered the software or instructions on how to build a
> decoder on a website, or in a popular monthly magazine, the idea of
> secretive incoding would be no longer secretive since many people would have
> the means of decoding it.
> just my view point anyway,i could be off the mark on this one, but i have
> pondered it for some time since our 52 group has tossed around the idea of
> digitalizing our transmissions.
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "Jeff Kenyon" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, August 04, 2006 2:40 AM
> Subject: Re: Digital Voice
>
>
> > Hi, there is an external card for APCO-25 modulation for the Uniden BC259D
> > scanner, but nothing I know of for the ham bands.  There have been a few
> > experiments though with APCO-25 useage on the ham bands though.
> >
> >
> >
> >
> >
> > On Thu, 3 Aug 2006, Frederick wrote:
> >
> > > Hi
> > >     I have been wondering for sometime if there are any digital voice
> > > converters that a person could plug in to there older analog rigs. I
> think
> > > that transmitting and receiving in digital voice on the ham bands would
> be
> > > the coolest thing.
> > >                     God bless,
> > >                     Mark WZ0K
> > > God loves you!
> > > My personal prayer book.
> > > Add your prayer or pray for others at the following link.
> > >
> http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0
> > >
> > > http://lists.topica.com/lists/funhamradio.
> > > http://groups.google.com/group/funhamradio-list
> > >
> > > http://funhamradio.bloki.com
> > >
> >
>