[ICOM] D-Star

[Joel R. Hallas]

Anders,

We checked that in our QST Product Review of 2 meter D-STAR (UT-118 equipped
IC-V82,June 2005) and noted it in the review. The review and a D-Star
overview are available on the members' only web-site at arrl.org. BTW, there
will be an article on D-STAR operations in the Sept (EmComm) issue.

I also expected the signals to make it through an analog repeater, but
confirmed that they didn't make it. I checked with IcomUS Engineering and
they said that the phase distortion across the audio passband was too much
for the phase keyed code. Perhaps if the connection were made at IF instead
of audio, it might work, but we didn't try it.

Probably just as well, since it would open the squelch to a blast of noise
for everyone without D-STAR on the repeater!

Regards, Joel
Joel R. Hallas, W1ZR

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Anders Janis SM4RNA
Sent: Saturday, July 07, 2007 4:52 AM
To: ICOM Reflector
Subject: Re: [ICOM] D-Star

By the way. A interesting thing we noticed. One can not use the digital 
speech mode and talk via a convetional repeater. The audio disappear 
compeatly. Have no idea why. I think the digital mode has less bandwith than

regular FM so I do not think the repeater is to narrow.

The manual to my IC-2200H is very very bad when it comes to the digital 
part. So I might be wrong on the bandwith. But as I recall the manual 
recomend 12,5kHz between stations. Also the standard has changed once since 
I bought the radio. I had to change the UT-115 to a UT-118 to be able to 
work the other Icoms with D-star.

Still there seem to be a problem with the UT-118. The call sign of the other

station is suposed to show on my display, but it do not. Have not put in to 
much work into that as the main intrest was to test the digital speech and 
range compared to regular FM.

/Anders


----- Original Message ----- 
From: "Jim Miller" <JimMiller at STL-OnLine.Net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Saturday, July 07, 2007 5:33 AM
Subject: [ICOM] D-Star


Can somebody define D-Star in a sentence or so?  Is it and expanded APRS?

Thanks, Jim KG0KP
----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
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----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/