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[aprssig] OT: Yaesu to release digital amateur radio gear

Jim Duncan jdbandman at earthlink.net
Tue Jan 10 12:37:17 UTC 2012


OK, enough. Hasn't this topic gone on long enough? This really has nothing
to do with APRS and the debate has gone on long enough. Please take this
debate elsewhere.

 

Thanks!

73 de Jim, KU0G

 

From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Amateur Radio WB8NUT
Sent: Tuesday, January 10, 2012 5:38 AM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] OT: Yaesu to release digital amateur radio gear

 

Seems you are the first person to offer that explanation. Please provide a
source to back-up that statement as nothing I have read in the past shows it
was developed by anyone for any reason other than amateur radio.

As for D-Star being developed specifically for amateur radio, from
Wikipedia:

>>> D-STAR (Digital Smart Technologies for Amateur Radio) is a digital voice
and data protocol specification developed as the result of research by the
<http://en.wikipedia.org/wiki/Japan_Amateur_Radio_League> Japan Amateur
Radio League to investigate digital technologies for
<http://en.wikipedia.org/wiki/Amateur_radio> amateur radio. While there are
other digital on-air technologies being used by amateurs that have come from
other services, D-Star is one of the first on-air and
<http://en.wikipedia.org/wiki/Packet_%28information_technology%29>
packet-based standards to be widely deployed and sold by a major radio
manufacturer that is designed specifically for amateur service use.<<<

Duffy
www.wb8nut.com

On 1/9/12 6:24 PM, Stephen H. Smith wrote:



Actually it was developed by a consortium of Japanese radio mfrs as a
potential digital radio protocol for commercial land mobile somewhat similar
to DMR, and was then offered royalty-free to JARL for ham use to essentially
"beta test" the system under real-world conditions. 


One huge advantage of DMR is that you can achieve 4800 BPS data transfer in
a 12.5 KHz channel or 9600 BPS in a classic 25 KHz channel (two 12.5KHz DMR
channels bonded) for non-voice uses, even on VHF or UHF. 




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