Hello from OKC
I hope more of you can discover D-Star and use all of its features. I am
on the Edmond club repeater and am on the OU repeater on Thursdays when I
come for my noon Rotary Club meeting and to check on a house I have for sale
east of the repeater site. Look forward to working you.
73's
Larry, W5NZS
In a message dated 11/28/2012 10:00:05 P.M. Central Standard Time,
[log in to unmask] writes:
Someone at the meeting asked about D-STAR. We should probably have a
presentation about this, but in the mean time, here are a few tidbits.
Digital Smart Technologies for Amateur Radio is a protocol developed by
the Japanese version of the ARRL. Sadly, only Icom has chosen to incorporate
it into their radios. Yaesu and Alinco both have digital radios, but
neither are D-STAR nor are they compatible with each other (AFAIK).
D-STAR uses a proprietary chip to encode an operator's voice so that it
fits into a very narrow-bandwidth data stream. Data can also be carried
along with the voice, though at only 1,200 bits/second (the Ethernet in the
Weather Center runs at 1,000,000,000 bits/second with 10x that on the
backbone). *However*, that's actually plenty of bandwidth for text and there are
applications that will let you send email over D-STAR. This is helpful in
emergency situations where internet is not available. 128,000 bits/second
are available on the 1.2-GHz band.
There are D-STAR repeaters and we have one thanks to K5MEM. What's neat
about the repeater is that in addition to functioning like a regular FM
repeater (listen to the input, retransmit on the output), the repeater is also
connected to an internet gateway. To use that, you need to register
yourself (using your callsign) at https://w5tc.nwc.ou.edu/ (click on
"Registration").
The club also has a pair of Icom ID-31A handitalkies and a DVDongle, a
device that you connect to your computer that allows you to connect to our
gateway from "the other side" and communicate with folks on the air.
Lots of good stuff on the web so I won't bore you all.
http://www.dstarusers.org/
http://www.dstarinfo.com/
http://en.wikipedia.org/wiki/D-STAR
--
Peter Laws / N5UWY
National Weather Center / Network Operations Center
University of Oklahoma Information Technology
[log in to unmask] (Remote)
College of Architecture, Regional and City Planning, MRCP '16
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